Today's topic settles down because it is really underlaying problems somehow and seems not to make a mistake in the problem sentence in seem a fairly old ....TCP/IP.. have it.. problem when reading. The material today then ..a Japanese problem it.. is [kochira] ↓↓.
■TCP/IP
Internet Protocol address of IPv6 is composed of 128 bits, and a vast address space can be used compared with Ipv4, and the unicast address, the multicast address, and the anycast address are allocated in use additionally.
These sentences are correct.
- The unicast multicast anycast can be used by IPv6's being composed of 128 bits.
The private address is defined only by the address space of class C though Internet Protocol address of Ipv4 uses the address area that was composed of 32 bits, and classified into class E by use by class A.
These sentences are wrong.
- The private address is class A?. It is defined in each address space of C.
- It is basic.
ICMP has the function etc. that carry error message and various demands/response message when the error occurs by the data transfer with the IP packet. The Ping command uses echo request/response message among various messages of this ICMP.
These sentences are correct.
- The state as it is｡｡
TCP is a protocol to the communication of the connection type used for UDP to communicate a connectionless type. Therefore, when reliability is requested from the data transfer, TCP is suitable, and when a good communication of the transfer efficiency is requested, UDP is suitable.
These sentences are correct.
- Natural. ｡｡
It is not when having already explained somehow. It thinks sentences of 1･3･4 to be correct when settling down and reading, and understand sentences of two. Isn't there private address without [wake] only of class C?It is [] feeling. It doesn't go easily because of this though it is good when it is laced that chief telecommunications engineer's problem occasionally is also easy ..so... ｡｡Then, around here though it is short today
2010/08/31
2010/08/30
H.323 is confusing.
Well, because it is necessary to pass the subject of a transmission exchange and a natural plant management when it will pass the chief telecommunications engineer though this blog is being published around the material of "Exchange" of the specialized subject now though thought the lack in the article before the chief telecommunications engineer (transmission exchange) is studied today, well, and because the problem of the specialized subject like transmission, the exchange, and the data communication, etc. is set here and there ..the transmission exchange and the plant management.., it sleeps and, then, today's material is [kochira] ↓↓ of ･･･ well though thought that the topic of "Transmission exchange and plant management" and "Regulations" sooner or later is published. it is necessary to do study of the exchange of everyone after all
- Protocol of H.323
The H.225.0RAS control is a protocol used between the H.323 end point and the H.323 gateway.
These sentences are wrong.
- The H.225.0RAS control is a protocol used between the H.323 terminal and H.323 [ge-toki-pa].
- "Gateway" of sentences of the problem is unrelated. because of regulations of "Address resolution", "Registration of the end point", and "Communication permission", etc. by the H.225.0RAS control by "Between the terminal and [ge-toki-pa]"
- "Registration, permission, and state" is roughly the meanings as it is because "RAS" is " R egistration, A dmission, S tatus", and I think fortune-telling [ito] to be an imagination as for other party's of "Caller's telephone number and the relation with Internet Protocol address, etc. are managed" [ge-toki-pa] protocol it.
The H.323 end point acquires Internet Protocol address of connected other party terminal by the H.225.0RAS control procedure, and registers user ID and address information etc. on the H.323 end point.
These sentences are correct.
- Sentences above are understood and ..dripping.. [dai] is strong.
- Internet Protocol address of H225.0RAS = other party of connection terminal is acquired, and user ID and address information etc. on H and 323 end points are registered.
After calling establishing [no], the protocol that does making to the packet and the packet forwarding when the voice data and the image data between H.323 end points are transmitted is H.245 control.
These sentences are wrong.
- After calling establishing [no], the protocol that does making to the packet and the packet forwarding when the voice data and the image data between H.323 end points are transmitted is H.324 control.
- H.324 is a video conferencing telephone standard in the cellular phone network, and it is unrelated to H.323.
- H.245 exchanges information of opening and shutting of the logical channel who transports a code, a flow control, jitter management, a set demand, and the media stream as various information necessary for the multimedia communication. The transmission and the reception are separately defined, and offer the means to transmit above-mentioned detailed information to other H.323 support equipment.
The protocol of the H.245 control and the H.225.0RAS control is forwarded by the TCP protocol that has the function etc. of sending again of data.
These sentences are wrong.
- The protocol of the H.245 control and the H.225.0RAS control is forwarded by the TCP protocol that has the call out system management etc.
- This "TCP protocol that has the call out system management etc." [Tteno] is ..H.225.0.. [yosei] though it becomes on if sentences of the problem are correct and it mends.
- [Anmari] doesn't relate to [de] and "Function of sending again of data" [tteno].
Well, it is the sleep of this material ..H.323 it.. ..difficult of the problem related to H.323.. ･･･ Remembering is what because it has divided Confusing, and "It is H.xxx to be used between xx and xx" very in detail because the name of "H.323" "H.245" "H.225" or the protocol looks like ..the desire.. very. It might be easy to remember when the sequence chart of my own way is made when studying and it brings it together systematically. Then, it is please ↓↓ as for the material of another one H.323.
- System that achieves communication by protocol of H.323
The H.323 terminal is a device that the user uses to do a real-time voice transmission, the image transmission, and the data communication.
These sentences are correct.
- ..floatage.. ?As for [n] and "XXX terminal", does the user use and [rutte] protocol isn't so?
The H.323 gateway has the voice and the transducer function of the form of the transmission of information on the image needed to communicate between the H.323 terminal and the terminal of an existing line switching network like the telephone network etc.
These sentences are correct.
- The voice and the transducer function of the form of the transmission of information on the image are done, and the gateway is needed to communicate between terminals of an existing line switching network like the telephone network etc.
H.323MCU has a broadcast function etc. necessary to achieve the multi point communication (communication done with three terminals or more).
These sentences are correct.
- MCU communicates a multi point.
"Japanese problem" does the nature in the H.323 problem that is certainly difficult and not remembered easily if it often reads. If which protocol is remembered what work to be being done in faint, does this problem have what in it makes a mistake?Well, it is not study only to solve the problem and it is the examination measures to prepare the table, and to make the study tool that understands easily in the in one's own way. Then, around here today
- Protocol of H.323
The H.225.0RAS control is a protocol used between the H.323 end point and the H.323 gateway.
These sentences are wrong.
- The H.225.0RAS control is a protocol used between the H.323 terminal and H.323 [ge-toki-pa].
- "Gateway" of sentences of the problem is unrelated. because of regulations of "Address resolution", "Registration of the end point", and "Communication permission", etc. by the H.225.0RAS control by "Between the terminal and [ge-toki-pa]"
- "Registration, permission, and state" is roughly the meanings as it is because "RAS" is " R egistration, A dmission, S tatus", and I think fortune-telling [ito] to be an imagination as for other party's of "Caller's telephone number and the relation with Internet Protocol address, etc. are managed" [ge-toki-pa] protocol it.
The H.323 end point acquires Internet Protocol address of connected other party terminal by the H.225.0RAS control procedure, and registers user ID and address information etc. on the H.323 end point.
These sentences are correct.
- Sentences above are understood and ..dripping.. [dai] is strong.
- Internet Protocol address of H225.0RAS = other party of connection terminal is acquired, and user ID and address information etc. on H and 323 end points are registered.
After calling establishing [no], the protocol that does making to the packet and the packet forwarding when the voice data and the image data between H.323 end points are transmitted is H.245 control.
These sentences are wrong.
- After calling establishing [no], the protocol that does making to the packet and the packet forwarding when the voice data and the image data between H.323 end points are transmitted is H.324 control.
- H.324 is a video conferencing telephone standard in the cellular phone network, and it is unrelated to H.323.
- H.245 exchanges information of opening and shutting of the logical channel who transports a code, a flow control, jitter management, a set demand, and the media stream as various information necessary for the multimedia communication. The transmission and the reception are separately defined, and offer the means to transmit above-mentioned detailed information to other H.323 support equipment.
The protocol of the H.245 control and the H.225.0RAS control is forwarded by the TCP protocol that has the function etc. of sending again of data.
These sentences are wrong.
- The protocol of the H.245 control and the H.225.0RAS control is forwarded by the TCP protocol that has the call out system management etc.
- This "TCP protocol that has the call out system management etc." [Tteno] is ..H.225.0.. [yosei] though it becomes on if sentences of the problem are correct and it mends.
- [Anmari] doesn't relate to [de] and "Function of sending again of data" [tteno].
Well, it is the sleep of this material ..H.323 it.. ..difficult of the problem related to H.323.. ･･･ Remembering is what because it has divided Confusing, and "It is H.xxx to be used between xx and xx" very in detail because the name of "H.323" "H.245" "H.225" or the protocol looks like ..the desire.. very. It might be easy to remember when the sequence chart of my own way is made when studying and it brings it together systematically. Then, it is please ↓↓ as for the material of another one H.323.
- System that achieves communication by protocol of H.323
The H.323 terminal is a device that the user uses to do a real-time voice transmission, the image transmission, and the data communication.
These sentences are correct.
- ..floatage.. ?As for [n] and "XXX terminal", does the user use and [rutte] protocol isn't so?
The H.323 gateway has the voice and the transducer function of the form of the transmission of information on the image needed to communicate between the H.323 terminal and the terminal of an existing line switching network like the telephone network etc.
These sentences are correct.
- The voice and the transducer function of the form of the transmission of information on the image are done, and the gateway is needed to communicate between terminals of an existing line switching network like the telephone network etc.
H.323MCU has a broadcast function etc. necessary to achieve the multi point communication (communication done with three terminals or more).
These sentences are correct.
- MCU communicates a multi point.
"Japanese problem" does the nature in the H.323 problem that is certainly difficult and not remembered easily if it often reads. If which protocol is remembered what work to be being done in faint, does this problem have what in it makes a mistake?Well, it is not study only to solve the problem and it is the examination measures to prepare the table, and to make the study tool that understands easily in the in one's own way. Then, around here today
2010/08/29
Because of the transmission exchange telecommunication chief engineer
Well, I think that the knowledge of "Transmission" or "Exchange" is still important because of the transmission exchange telecommunication chief engineer though the chief telecommunications engineer is studied as usual today. The material of the switchboard system is published today because of saying. Then, today's material is ↓↓.
- Digital switchboard for telephone
In the software of a digital switchboard for the telephone, priority is set to each program to execute various processing efficiently, and the execution control form corresponding to the character is taken in real time.
- The software of a digital switchboard sets priority to the program, and takes the execution control form corresponding to the character in real time.
【 emergency 】The one to interrupt processing even if there is a program under execution, and to execute the breakdown processing, and as for the level control, information on the processing of the program that interrupts while executing it is saved in a specific memory area, and, besides, will wait for the restart of processing when 【 abnormality 】 of the system like the breakdown etc. is detected.
- Information on the processing of the program that interrupts while interrupting processing even if there is a program under execution, executing the breakdown processing, and executing it is saved in a specific memory area, and, besides, waits for the restart of processing when 【 abnormality 】 of the system like 【 emergency 】 level control = breakdown etc. is detected.
The clock level control in real time secures the character for 【 periodic 】 by starting the program in the form that controls the program that needs accurate timing.
- The character is in real time secured for 【 periodic 】 by starting the program in the form that controls the program that needs timing clock level control = accurate.
Base..level..control..in real time..character..restriction..gradual..program..control..form..service..analysis..processing..number..translation..processing..system..very..need..call processing program..maintenance..operation..related to..program..start..use.
- When it is a form that controls the program that the restriction of the character is base level control = in real time gradual, and the call processing program that doesn't need the system between very much and the program related to the maintenance operation is started, it uses it.
It asks and one [no] has been published up to now in the past how many days it, and which sentences are mistakes, and is it correct or does : by the memory point?It is "Fill-in-the-blank question" this time though publishesThe part of left 【XXX】 is actually set as making up in the past and because it is a thing, it takes care. The part that shows a loss on the right side classifies the part that I felt personal "It is important", and refer, please. Then, the following : the material that judges the corrections of sentences please up to now.
- Start of program in base level control
The program that controls the start of each program in what order it is necessary to start the program of the base level is called a driving management program.
These sentences are wrong.
- It is composed that it is an operating sushi stem (execution management) in which order that manages the schedule whether start by the program, it calls, confronts the program group that corresponds respectively in each division [sareta] [yoshori] and which timing of these [ni] ..the arbitrary occurrence.., and so as not to ruin it, a real-time character is devised.
- is division, and no "Driving management program. " perhaps. "Executive control program"
When all the processing of the program at the clock level ends, the program at the base level is started.
These sentences are correct.
- Naturally, after all the processing of the clock level ends, the processing of the base level is executed. 。。
The program at the base level is executed in the specification order by succession from the program of the clock level.
These sentences are wrong.
- Work at the clock level that it is interrupted at each constant period (The example: 8ms) and the emergency degree is high is made to intervene it though central controller (CC:Central Control) that works and controls the switchboard with software is usually working at a gradual base level of the time restriction. This is called a clock interruption. A central controller moves at the base level when all work at the clock level ends and is processing work. The result is brought together on the way of work when the constant period passes before work at the base level ends and the work that interrupts at the base level at the next cycle is drawn out after it interrupts, and it works at the clock level and it restarts.
- Program of clock level is made to interrupt by priority, and because only work at base level is restarted when everything is ended when it ends all by processing work at clock level, and "Succession from clock level" is not done separately during base level work though cannot it able not to have been so significant and to know sentences aboveIt is "The work that I was interrupting is succeeded. " if it dares to say.
Well, it is a topic of the switchboard this time. It is not a problem of worrying so much when the priority level at the clock level and the base level is neatly understood. How what is as of now though the rate of setting questions of the problem of the operating system of such a switchboard was high in old times?Because it is "Transmission exchange telecommunication chief engineer" as said even at the beginning still, I will remember as one respondent knowledge though I cannot say indescribably because the problem collection in recent years doesn't look over at all. Then, around here today.
- Digital switchboard for telephone
In the software of a digital switchboard for the telephone, priority is set to each program to execute various processing efficiently, and the execution control form corresponding to the character is taken in real time.
- The software of a digital switchboard sets priority to the program, and takes the execution control form corresponding to the character in real time.
【 emergency 】The one to interrupt processing even if there is a program under execution, and to execute the breakdown processing, and as for the level control, information on the processing of the program that interrupts while executing it is saved in a specific memory area, and, besides, will wait for the restart of processing when 【 abnormality 】 of the system like the breakdown etc. is detected.
- Information on the processing of the program that interrupts while interrupting processing even if there is a program under execution, executing the breakdown processing, and executing it is saved in a specific memory area, and, besides, waits for the restart of processing when 【 abnormality 】 of the system like 【 emergency 】 level control = breakdown etc. is detected.
The clock level control in real time secures the character for 【 periodic 】 by starting the program in the form that controls the program that needs accurate timing.
- The character is in real time secured for 【 periodic 】 by starting the program in the form that controls the program that needs timing clock level control = accurate.
Base..level..control..in real time..character..restriction..gradual..program..control..form..service..analysis..processing..number..translation..processing..system..very..need..call processing program..maintenance..operation..related to..program..start..use.
- When it is a form that controls the program that the restriction of the character is base level control = in real time gradual, and the call processing program that doesn't need the system between very much and the program related to the maintenance operation is started, it uses it.
It asks and one [no] has been published up to now in the past how many days it, and which sentences are mistakes, and is it correct or does : by the memory point?It is "Fill-in-the-blank question" this time though publishesThe part of left 【XXX】 is actually set as making up in the past and because it is a thing, it takes care. The part that shows a loss on the right side classifies the part that I felt personal "It is important", and refer, please. Then, the following : the material that judges the corrections of sentences please up to now.
- Start of program in base level control
The program that controls the start of each program in what order it is necessary to start the program of the base level is called a driving management program.
These sentences are wrong.
- It is composed that it is an operating sushi stem (execution management) in which order that manages the schedule whether start by the program, it calls, confronts the program group that corresponds respectively in each division [sareta] [yoshori] and which timing of these [ni] ..the arbitrary occurrence.., and so as not to ruin it, a real-time character is devised.
- is division, and no "Driving management program. " perhaps. "Executive control program"
When all the processing of the program at the clock level ends, the program at the base level is started.
These sentences are correct.
- Naturally, after all the processing of the clock level ends, the processing of the base level is executed. 。。
The program at the base level is executed in the specification order by succession from the program of the clock level.
These sentences are wrong.
- Work at the clock level that it is interrupted at each constant period (The example: 8ms) and the emergency degree is high is made to intervene it though central controller (CC:Central Control) that works and controls the switchboard with software is usually working at a gradual base level of the time restriction. This is called a clock interruption. A central controller moves at the base level when all work at the clock level ends and is processing work. The result is brought together on the way of work when the constant period passes before work at the base level ends and the work that interrupts at the base level at the next cycle is drawn out after it interrupts, and it works at the clock level and it restarts.
- Program of clock level is made to interrupt by priority, and because only work at base level is restarted when everything is ended when it ends all by processing work at clock level, and "Succession from clock level" is not done separately during base level work though cannot it able not to have been so significant and to know sentences aboveIt is "The work that I was interrupting is succeeded. " if it dares to say.
Well, it is a topic of the switchboard this time. It is not a problem of worrying so much when the priority level at the clock level and the base level is neatly understood. How what is as of now though the rate of setting questions of the problem of the operating system of such a switchboard was high in old times?Because it is "Transmission exchange telecommunication chief engineer" as said even at the beginning still, I will remember as one respondent knowledge though I cannot say indescribably because the problem collection in recent years doesn't look over at all. Then, around here today.
2010/08/28
It is a network system today.
Well, only a little though it is said that the chief telecommunications engineer is studied today because time cannot be so taken today ・・・ Then, today's material is [kochira] ↓↓.
- Function of router etc.
There are [sutatei;kkuru-chingu] and [dainamikkuru-chingu] in a typical [ru-chingu] technique in the router. ICMP is a typical protocol to exchange [ru-chingute-buru] information with [dainamikkuru-chingu] regularly.
These sentences are wrong.
- The protocol that regularly exchanges [ru-chingute-buru] information is [ru-chingupurotokoru], and, for instance, [ru-chingupurotokoru] called RIP and OSPF is used for the TCP/IP network. ICMP is a protocol that is used between the router and the computer, and provides for the method of inquiring information concerning the state of IP and details of the code value. - ICMP …_ :. |~|0ICMP is PING if it says. 。。
In the router, two or more private IP addresses in a local network use the port number and the MAC address, and are used for the IP masquerade as a function to convert into one global IP address at the same time.
These sentences are wrong.
- Two or more private IP addresses in a local network combine the TCP/UDP port number with NAT, and are used for the IP masquerade as a function to convert into one global IP address at the same time. - It doesn't convert in the port number and the MAC address, and it converts it by the port number and Internet Protocol address though the IP masquerade comes to be able certainly to share one global address by two or more hosts.
Filtering with the network address unit and the control of the IP packet at the port number level can be done, and to forward only a specific IP packet, the filtering function in the router can be limited.
These sentences are correct.
- The access list is spoken. The refusal of the street of each packet can be set by identifying the content of the IP packet.
It is both said by the router and three layer switches that the one of the router and the software subject is three layer switches the one of the hardware subject with the device only for the [ru-chingu] processing in OSI reference model's network layer.
These sentences are wrong.
- The one of the hardware subject that uses special IC for specific is called the one of three layer switches and the software subjects is routers.
- Three layer switches are the hardware bases though routing is done, and the router does routing with the software base though it is thought it is safe if it reads neatly.
♪ then around here today today then ..no so much play on holiday.. ..taking the time of study neatly...
- Function of router etc.
There are [sutatei;kkuru-chingu] and [dainamikkuru-chingu] in a typical [ru-chingu] technique in the router. ICMP is a typical protocol to exchange [ru-chingute-buru] information with [dainamikkuru-chingu] regularly.
These sentences are wrong.
- The protocol that regularly exchanges [ru-chingute-buru] information is [ru-chingupurotokoru], and, for instance, [ru-chingupurotokoru] called RIP and OSPF is used for the TCP/IP network. ICMP is a protocol that is used between the router and the computer, and provides for the method of inquiring information concerning the state of IP and details of the code value. - ICMP …_ :. |~|0ICMP is PING if it says. 。。
In the router, two or more private IP addresses in a local network use the port number and the MAC address, and are used for the IP masquerade as a function to convert into one global IP address at the same time.
These sentences are wrong.
- Two or more private IP addresses in a local network combine the TCP/UDP port number with NAT, and are used for the IP masquerade as a function to convert into one global IP address at the same time. - It doesn't convert in the port number and the MAC address, and it converts it by the port number and Internet Protocol address though the IP masquerade comes to be able certainly to share one global address by two or more hosts.
Filtering with the network address unit and the control of the IP packet at the port number level can be done, and to forward only a specific IP packet, the filtering function in the router can be limited.
These sentences are correct.
- The access list is spoken. The refusal of the street of each packet can be set by identifying the content of the IP packet.
It is both said by the router and three layer switches that the one of the router and the software subject is three layer switches the one of the hardware subject with the device only for the [ru-chingu] processing in OSI reference model's network layer.
These sentences are wrong.
- The one of the hardware subject that uses special IC for specific is called the one of three layer switches and the software subjects is routers.
- Three layer switches are the hardware bases though routing is done, and the router does routing with the software base though it is thought it is safe if it reads neatly.
♪ then around here today today then ..no so much play on holiday.. ..taking the time of study neatly...
2010/08/27
It relates the network today.
It sees and, then, today's material is [kochira] ↓↓ of [tto] Sala because it thinks that excellent sober is deep if having taken an examination of a person and a technical engineer who runs to [sumaa;] and recent network circumstances in the network system of today's topic.
Internet Protocol address of IPv6 is composed of 128 bits, and written as eight hexadecimal numbers delimited by “:" that is the colon sign in every 16 bits.
These sentences are correct.
- The biggest difference between IPv4 and IPv6 is in the length of the network address. IPv6 is 128 bits while IPv4 until the past was 32 bits.
- The numerical value written by the hexadecimal number is delimited by colon (:) in 16 bits and written because it becomes tedious too much in the mark similar to IPv4 in IPv6 when 128 bits are written.
Internet Protocol address of IPv6 is classified into three kinds (the unicast, the anycast, and the multicast).
These sentences are correct.
- Internet Protocol address given to interface of one unicast address. One interface is recognized. When a lot of interfaces (LAN board etc.) are being mounted by one computer, only the number of interfaces will have the unicast address.
- Address allocated in node of two or more multicast addresses. The packet transmitted to this address appropriating is delivered to the node that is reproduced and participates in this address. Address that starts by ffxx::. The unicast address is specified for the reply. The transmission origin must not relay the packet in the multicast address and do not relay the router.
- It looks like the multicast in the point that the address of one [enikyasutoadoresu] is allocated in two or more nodes, and the point "It is delivered only to one of the nearest nodes in the node that belongs there on the network" is different for [enikyasuto]. It doesn't exist, and when it is necessary, the broadcast address uses all node multicast address (ff02::1) for IPv6. It transmits specifying it for the reply by the unicast, and [enikyasuto] (anycast) address throws away the packet in the transmission origin to the router.
The Ipv6 equipment combines information notified from information and the router of the equipment and Internet Protocol address is generated in the [sute-toresu] automatic setting among an automatic setting mechanisms of IPv6.
These sentences are correct.
- The automatic setting in the address is possible as long as there is a router even if DHCP is not used in automatic address setting IPv6 (RFC 4862). The address where the attainment is sure to exist only in the link named linklocal address attaches to the network interface of the IPv6 node. You may set this by hand power if unique in the link though being generated from interface ID generated from the prefix and the MAC address named fe80:: is usual. Finally, unique in the address is solved based on DAD. Moreover, the router is regular or transmits information (Router advertisement; RA) on the network to the network that I connect based on the request. The IPv6 host generates a global address by using prefix information included in this information and unique interface ID. The IPv6 host can secure the connectivity to a global IPv6 network by setting the router that transmits received RA to the default route at the same time. However, because the address of the DNS server for the name resolution cannot be acquired in this mechanism, another mechanism such as DHCPv6 is needed for it.
The dual stack (dual IP layer) that is the coexistence technology of IPv4 and IPv6 is technologies that make the Ipv6 packet a capsule in the IPv4 packet.
These sentences are wrong.
- The dual stack is a technology that supports both IPv6 and IPv4 the host and the router protocols at the same time. These sentences are "IPv6 over IPv4 tunnel. "
- This hit is not understood easily because it is confusing. ｡｡｡
Both dual stack = IPv6 and IPv4 are made and the IPv6 packet is made a capsule in support IPv6 over IPv4 =IPv4. "** over xxxxx"'s coming out in various places though these sentences become explanations of "IPv6 over IPv4" because it says that the IPv4 packet will be made a capsule in IPv4 over IPv6 =IPv6 has "It is ** in xxxx" with the remembrance. ｡｡For instance, when it is Ethernet Over MPLS technology, I feel the Ethernet frame in MPLS as for encapsulation.
Well, another one special holiday ･･･ Then,
It economically becomes inefficiency in many cases though QoS on the Internet can be secured by the design that prepares a large installed capacity enough compared with the input traffic at the peak.
These sentences are correct.
- Well, the profit is not taken easily in cost [**] ..surplus.. [sonawayouryou] though certain reliability might rise.
There is a feature of being influenced by the others' flow besides the amount of the packet that the composition of the net sends and receives to oneself though the element of QoS on the Internet is an average rate, a peak rate, and a delay, etc. when a chain of packet flow are sent among hosts.
These sentences are correct.
- Naturally, the flow of other nodes will be influenced. ｡｡
The entire net can be efficiently used by identifying the flow that joins the same network, and assuming the common IP network where different QoS at each flow can be secured equipment.
These sentences are correct.
- As for efficiency in the design, it might be bad, and designing naturally at each flow might be better for efficiency even if it suddenly thinks about QoS on the network at a time.
In general, when the quality that each flow demands while attempting the prevention of congestion is controlled, and congestion is generated on the network, one of the purposes of the QoS control evenly distributes the influence of congestion to each flow.
These sentences are wrong.
- To reduce the influence of congestion in general when congestion is generated on the network, it is directed to interrupt the transmission temporarily at the transmitting end.
- If the adverse effect is distributed, it might be not good.
- When flow overflows, it is "The first interruption. "
Well, how?It is thought that becoming familiar is deep if the person challenged a technical engineer, and indispensable knowledge to CCNA or CCIP is feeling or it sleeps and, then, around here today though the material around here was written even at the beginning.
Internet Protocol address of IPv6 is composed of 128 bits, and written as eight hexadecimal numbers delimited by “:" that is the colon sign in every 16 bits.
These sentences are correct.
- The biggest difference between IPv4 and IPv6 is in the length of the network address. IPv6 is 128 bits while IPv4 until the past was 32 bits.
- The numerical value written by the hexadecimal number is delimited by colon (:) in 16 bits and written because it becomes tedious too much in the mark similar to IPv4 in IPv6 when 128 bits are written.
Internet Protocol address of IPv6 is classified into three kinds (the unicast, the anycast, and the multicast).
These sentences are correct.
- Internet Protocol address given to interface of one unicast address. One interface is recognized. When a lot of interfaces (LAN board etc.) are being mounted by one computer, only the number of interfaces will have the unicast address.
- Address allocated in node of two or more multicast addresses. The packet transmitted to this address appropriating is delivered to the node that is reproduced and participates in this address. Address that starts by ffxx::. The unicast address is specified for the reply. The transmission origin must not relay the packet in the multicast address and do not relay the router.
- It looks like the multicast in the point that the address of one [enikyasutoadoresu] is allocated in two or more nodes, and the point "It is delivered only to one of the nearest nodes in the node that belongs there on the network" is different for [enikyasuto]. It doesn't exist, and when it is necessary, the broadcast address uses all node multicast address (ff02::1) for IPv6. It transmits specifying it for the reply by the unicast, and [enikyasuto] (anycast) address throws away the packet in the transmission origin to the router.
The Ipv6 equipment combines information notified from information and the router of the equipment and Internet Protocol address is generated in the [sute-toresu] automatic setting among an automatic setting mechanisms of IPv6.
These sentences are correct.
- The automatic setting in the address is possible as long as there is a router even if DHCP is not used in automatic address setting IPv6 (RFC 4862). The address where the attainment is sure to exist only in the link named linklocal address attaches to the network interface of the IPv6 node. You may set this by hand power if unique in the link though being generated from interface ID generated from the prefix and the MAC address named fe80:: is usual. Finally, unique in the address is solved based on DAD. Moreover, the router is regular or transmits information (Router advertisement; RA) on the network to the network that I connect based on the request. The IPv6 host generates a global address by using prefix information included in this information and unique interface ID. The IPv6 host can secure the connectivity to a global IPv6 network by setting the router that transmits received RA to the default route at the same time. However, because the address of the DNS server for the name resolution cannot be acquired in this mechanism, another mechanism such as DHCPv6 is needed for it.
The dual stack (dual IP layer) that is the coexistence technology of IPv4 and IPv6 is technologies that make the Ipv6 packet a capsule in the IPv4 packet.
These sentences are wrong.
- The dual stack is a technology that supports both IPv6 and IPv4 the host and the router protocols at the same time. These sentences are "IPv6 over IPv4 tunnel. "
- This hit is not understood easily because it is confusing. ｡｡｡
Both dual stack = IPv6 and IPv4 are made and the IPv6 packet is made a capsule in support IPv6 over IPv4 =IPv4. "** over xxxxx"'s coming out in various places though these sentences become explanations of "IPv6 over IPv4" because it says that the IPv4 packet will be made a capsule in IPv4 over IPv6 =IPv6 has "It is ** in xxxx" with the remembrance. ｡｡For instance, when it is Ethernet Over MPLS technology, I feel the Ethernet frame in MPLS as for encapsulation.
Well, another one special holiday ･･･ Then,
It economically becomes inefficiency in many cases though QoS on the Internet can be secured by the design that prepares a large installed capacity enough compared with the input traffic at the peak.
These sentences are correct.
- Well, the profit is not taken easily in cost [**] ..surplus.. [sonawayouryou] though certain reliability might rise.
There is a feature of being influenced by the others' flow besides the amount of the packet that the composition of the net sends and receives to oneself though the element of QoS on the Internet is an average rate, a peak rate, and a delay, etc. when a chain of packet flow are sent among hosts.
These sentences are correct.
- Naturally, the flow of other nodes will be influenced. ｡｡
The entire net can be efficiently used by identifying the flow that joins the same network, and assuming the common IP network where different QoS at each flow can be secured equipment.
These sentences are correct.
- As for efficiency in the design, it might be bad, and designing naturally at each flow might be better for efficiency even if it suddenly thinks about QoS on the network at a time.
In general, when the quality that each flow demands while attempting the prevention of congestion is controlled, and congestion is generated on the network, one of the purposes of the QoS control evenly distributes the influence of congestion to each flow.
These sentences are wrong.
- To reduce the influence of congestion in general when congestion is generated on the network, it is directed to interrupt the transmission temporarily at the transmitting end.
- If the adverse effect is distributed, it might be not good.
- When flow overflows, it is "The first interruption. "
Well, how?It is thought that becoming familiar is deep if the person challenged a technical engineer, and indispensable knowledge to CCNA or CCIP is feeling or it sleeps and, then, around here today though the material around here was written even at the beginning.
2010/08/26
It is a transmission exchange.
Well Well, let's study the chief telecommunications engineer today. the chief telecommunications engineer "" doesn't touch the railway track so much here by saying by the transmission exchange. ｡｡In handling chiefly by this blog, it is a problem for "Special subject exchange and transmission" and the problem of "Transmission exchange and plant management" is most. My having studied before becomes and because transmission was an exchange, that becomes a main by all means though it is thought that the topic of the data communication or the electric power is occasionally included. "How many years of the problem on earth are stocked?" increases the number of problems each day even to me when becoming accustomed to the management of this blog a little more though doesn't understand well because there is an excellent volume. Then, today's material is [kore] ↓.
ATM network and STM network
On the STM network, the speed menu offered to the user can offer a lot of speed menus in the ATM network though is generally limited 64Kbit/s and 1.5Mbit/s, etc.
These sentences are correct.
- The speed menu offered to STM network = user is generally limited to 64Kbit/s and 1.5Mbit/s, etc.
- A speed menu a lot of ATM network = can be offered.
Because the communication resource is occupied in the ATM network only when it is necessary, the burst data between networks can be efficiently transmitted compared with the STM network.
These sentences are correct.
- Data that occupies the communication resource only when it is ATM network = necessary and is the burst can be efficiently transmitted.
It is necessary to decide a physical multiplex position beforehand between sending and receiving as well as the STM network to identify the address in the ATM network according to cell header information.
These sentences are wrong.
- In the ATM, data is exchanged by the unit of all of the 53 bytes in length that are called a cell. The data part is 48 bytes among cells, and five bytes become header information. In this header, there are "Virtual passing identifier" that shows the address and "Virtual channel identifier", and the ATM network is a mechanism that data is delivered based on this information. Therefore, a physical multiplex position need not be decided between sending and receiving. ..-.. well, [itte] [toko] is mistaken need not ..→.. should the decision physical multiplex position.
Well, how do it say that it will require or about the current time in the time of which I took an examination as for the topic of the ATM though the rate of setting questions was high?But..transmission..world..provide..ATM..limit..by all means..such..problem..head..provide..work..remember.Then, around here today.
ATM network and STM network
On the STM network, the speed menu offered to the user can offer a lot of speed menus in the ATM network though is generally limited 64Kbit/s and 1.5Mbit/s, etc.
These sentences are correct.
- The speed menu offered to STM network = user is generally limited to 64Kbit/s and 1.5Mbit/s, etc.
- A speed menu a lot of ATM network = can be offered.
Because the communication resource is occupied in the ATM network only when it is necessary, the burst data between networks can be efficiently transmitted compared with the STM network.
These sentences are correct.
- Data that occupies the communication resource only when it is ATM network = necessary and is the burst can be efficiently transmitted.
It is necessary to decide a physical multiplex position beforehand between sending and receiving as well as the STM network to identify the address in the ATM network according to cell header information.
These sentences are wrong.
- In the ATM, data is exchanged by the unit of all of the 53 bytes in length that are called a cell. The data part is 48 bytes among cells, and five bytes become header information. In this header, there are "Virtual passing identifier" that shows the address and "Virtual channel identifier", and the ATM network is a mechanism that data is delivered based on this information. Therefore, a physical multiplex position need not be decided between sending and receiving. ..-.. well, [itte] [toko] is mistaken need not ..→.. should the decision physical multiplex position.
Well, how do it say that it will require or about the current time in the time of which I took an examination as for the topic of the ATM though the rate of setting questions was high?But..transmission..world..provide..ATM..limit..by all means..such..problem..head..provide..work..remember.Then, around here today.
2010/08/25
The chief telecommunications engineer is confusing.
Then, let's study the chief telecommunications engineer today.
Well..always..chief telecommunications engineer..say..chief telecommunications engineer..licensed electrician..often..make a mistake..chief telecommunications engineer..chief transmission and switching engineer..chief line engineer..classify..target..do..chief transmission and switching engineer..specialized subject..wireless..exchange..transmission..data communication..communication..electric power..divide. Because the type takes up various topics ･･･ It is "It is confusing" really, and even if good is said, today's material is ↓↓ without mentioning it though said. ･･･ "It is necessary to receive any on earth" when it is taken an examination for the first time and "It only has to choose the good one" because of [nin] ..becoming..
-SIP
The SIP terminal generates the request and plays the role of UAC(User Agent Client) as a client. Moreover, the SIP terminal plays the role of UAS(User Agent Server) that generates the response by processing the request.
These sentences are correct.
- The terminal of * SIP :. "The role of UAS that processes the request is played. "
- Both the server and the client work.
The server that composes the SIP server is classified into three (the proxy server, [ridairekutosa-ba], and the registration server) according to the function.
These sentences are correct.
- Proxy server
- [Ridairekutosa-ba]
- Registration server
In UAS, the proxy server has the request and it has the function to turn the response to UAC and to forward. Moreover, the proxy server generates the request, and plays the role of UAC as the client.
These sentences are mistakes.
- - The proxy server doesn't generate the request though the proxy server has the request and it has the function to turn the response to UAC and to forward in UAS.
- The client is generation [surumondakarana] .. , ..reeling.. request｡｡
Well, today's material was "SIP". SIP is abbreviation of Session Initiation Protocol and a kind of the IP communication. The high one is a charm. the advantage of smoothness etc. and compatibility with Web easily and ..analysis.. develop because it is a protocol of the text base compared with H.323 Communication..person..develop..one..legacy..terminal..operation..part..communication method..idea..near..software..shop..develop..one..so-called..telephone..shop..common sense..pass..part..provide..late-started..now..one..communication..world..powerful..become..think..nowadays.It examines it on the book and the net when interested. Then, around here ･･･ today
Well..always..chief telecommunications engineer..say..chief telecommunications engineer..licensed electrician..often..make a mistake..chief telecommunications engineer..chief transmission and switching engineer..chief line engineer..classify..target..do..chief transmission and switching engineer..specialized subject..wireless..exchange..transmission..data communication..communication..electric power..divide. Because the type takes up various topics ･･･ It is "It is confusing" really, and even if good is said, today's material is ↓↓ without mentioning it though said. ･･･ "It is necessary to receive any on earth" when it is taken an examination for the first time and "It only has to choose the good one" because of [nin] ..becoming..
-SIP
The SIP terminal generates the request and plays the role of UAC(User Agent Client) as a client. Moreover, the SIP terminal plays the role of UAS(User Agent Server) that generates the response by processing the request.
These sentences are correct.
- The terminal of * SIP :. "The role of UAS that processes the request is played. "
- Both the server and the client work.
The server that composes the SIP server is classified into three (the proxy server, [ridairekutosa-ba], and the registration server) according to the function.
These sentences are correct.
- Proxy server
- [Ridairekutosa-ba]
- Registration server
In UAS, the proxy server has the request and it has the function to turn the response to UAC and to forward. Moreover, the proxy server generates the request, and plays the role of UAC as the client.
These sentences are mistakes.
- - The proxy server doesn't generate the request though the proxy server has the request and it has the function to turn the response to UAC and to forward in UAS.
- The client is generation [surumondakarana] .. , ..reeling.. request｡｡
Well, today's material was "SIP". SIP is abbreviation of Session Initiation Protocol and a kind of the IP communication. The high one is a charm. the advantage of smoothness etc. and compatibility with Web easily and ..analysis.. develop because it is a protocol of the text base compared with H.323 Communication..person..develop..one..legacy..terminal..operation..part..communication method..idea..near..software..shop..develop..one..so-called..telephone..shop..common sense..pass..part..provide..late-started..now..one..communication..world..powerful..become..think..nowadays.It examines it on the book and the net when interested. Then, around here ･･･ today
There is no reference book of the chief telecommunications engineer goodness ･･･.
If an almost useful reference book doesn't exist but even exists, chief telecommunications engineer's examination grind is easily useless ･･･ It is high in it. As the study method, it is a question in the past and [tteitte]. Giving it a butcher's when it asks and the word doesn't know in [no] is derived in the past is the one even of the problem of a considerably new technology that comes to be able to be answered when it depends, [ka] [samon] is digested, and it becomes accustomed to the atmosphere of the problem as the desire that the stance is the best. Well, today's material is ↓↓ *ATM.
As for synchronous transfer mode (STM), the multiplexed signal is periodically arranged. Therefore, because 【 time slot 】 is occupied by the signal when information not periodic is multiple transmitted, it is not efficient.
Because the time slot is decided at the cycle, inefficiency [nanona]. synchronous transfer mode ** STM = ..correct.. these sentences
It is said packet forwarding mode (PTM) is a method to divide information into the packet of 【 variable-length 】, and to do the protocol translation and the control of the mistake sending again in each packet, and it is unsuitable for the high-speed communication.
These sentences divide packet of ..correctness.. * forwarding mode = variable-length into the block.
To supplement these faults, information is transmitted by the cell of 【 fixed length 】 including connection destination information etc. in asynchronous transfer mode (ATM). Moreover, 【 hardware 】 can be processed because periodicity is not restricted when it is multiple because there is no frame cycle like the synchronous multiplex, many kinds of rate information can be multiplexed, and complex protocol processing is not done, and the achievement of speed-up is easy.
These sentences are correct. - It divides into the cell of ATM = fixed length (53 bytes).
Today's material was an ATM. ATM..say..automatic teller machine..sleep..asynchronous transfer mode..automatic teller machine..by the way..this..blog..explanation..every time..table..publish..this..table..left side..past..ask..excerpt..right side..the..sentence..correction..memorize..point..write..perhaps..well..today..table..as an example of..take..sentence..correct..examination..answer..correct.By the way, it asks and [ha] is done neatly by the problem collection in the past because the publishing order is published at random really capriciously. Then, around here ･･･ today
As for synchronous transfer mode (STM), the multiplexed signal is periodically arranged. Therefore, because 【 time slot 】 is occupied by the signal when information not periodic is multiple transmitted, it is not efficient.
Because the time slot is decided at the cycle, inefficiency [nanona]. synchronous transfer mode ** STM = ..correct.. these sentences
It is said packet forwarding mode (PTM) is a method to divide information into the packet of 【 variable-length 】, and to do the protocol translation and the control of the mistake sending again in each packet, and it is unsuitable for the high-speed communication.
These sentences divide packet of ..correctness.. * forwarding mode = variable-length into the block.
To supplement these faults, information is transmitted by the cell of 【 fixed length 】 including connection destination information etc. in asynchronous transfer mode (ATM). Moreover, 【 hardware 】 can be processed because periodicity is not restricted when it is multiple because there is no frame cycle like the synchronous multiplex, many kinds of rate information can be multiplexed, and complex protocol processing is not done, and the achievement of speed-up is easy.
These sentences are correct. - It divides into the cell of ATM = fixed length (53 bytes).
Today's material was an ATM. ATM..say..automatic teller machine..sleep..asynchronous transfer mode..automatic teller machine..by the way..this..blog..explanation..every time..table..publish..this..table..left side..past..ask..excerpt..right side..the..sentence..correction..memorize..point..write..perhaps..well..today..table..as an example of..take..sentence..correct..examination..answer..correct.By the way, it asks and [ha] is done neatly by the problem collection in the past because the publishing order is published at random really capriciously. Then, around here ･･･ today
2010/08/24
The licensed engineer is serious ･･･.
Well, the chief telecommunications engineer is studied today and the material on [masuyo] [ima] day is ↓↓.
- Telephone call road system of digital switchboard for telephone
Because the digital telephone call road cannot pass the high-power signal of the call signal etc. , the call signal sending function to inform the telephone of arriving has been installed in the subscriber circuit.
These sentences are correct.
- The digital telephone call road cannot pass the high-power.
- The call signal sending function to inform them of arriving has been installed in the subscriber circuit.
CODEC is composed by the sign machine that converts the PCM signal of the decoder and descending that converts the analogue signal of going up from the telephone into the PCM signal into the analogue signal.
These sentences are wrong.
- "Decode" and "Sign" are simply opposite.
The digital telephone call road installs the circuit for interrupt in the subscriber circuit because the high-power signal for the subscriber examination cannot be passed, catches the local loops, and examines the subscriber.
These sentences are correct.
- The digital telephone call road cannot pass the high-power.
- The function to install the circuit for interrupt, to catch the local loops, and to examine the subscriber has been installed in the subscriber circuit.
The overvoltage protection function to protect the switchboard is possessed from the abnormality voltage that propagates the core wire of the subscriber's cable and invades.
These sentences are correct.
- No O of BORSCHT. ｡
This material : in "Exchange" around here ･･･ omission today because there are neither [tottsuki], [suiyone] [cho] nor time because [kore] is a material that often comes out considerably as an old installation technician.
- Telephone call road system of digital switchboard for telephone
Because the digital telephone call road cannot pass the high-power signal of the call signal etc. , the call signal sending function to inform the telephone of arriving has been installed in the subscriber circuit.
These sentences are correct.
- The digital telephone call road cannot pass the high-power.
- The call signal sending function to inform them of arriving has been installed in the subscriber circuit.
CODEC is composed by the sign machine that converts the PCM signal of the decoder and descending that converts the analogue signal of going up from the telephone into the PCM signal into the analogue signal.
These sentences are wrong.
- "Decode" and "Sign" are simply opposite.
The digital telephone call road installs the circuit for interrupt in the subscriber circuit because the high-power signal for the subscriber examination cannot be passed, catches the local loops, and examines the subscriber.
These sentences are correct.
- The digital telephone call road cannot pass the high-power.
- The function to install the circuit for interrupt, to catch the local loops, and to examine the subscriber has been installed in the subscriber circuit.
The overvoltage protection function to protect the switchboard is possessed from the abnormality voltage that propagates the core wire of the subscriber's cable and invades.
These sentences are correct.
- No O of BORSCHT. ｡
This material : in "Exchange" around here ･･･ omission today because there are neither [tottsuki], [suiyone] [cho] nor time because [kore] is a material that often comes out considerably as an old installation technician.
It is prayed that you pass the examination.
Then, ♪ that immediately starts the study of "Chief telecommunications engineer".
This blog is a blog to which "A little" improves as for the memo when "I" chiefly studies the transmission exchange for my juniors.
Because juniors' of [uchi] possibilities to go into the tank at a dash are anyway high when the study set and material are passed to about one
It studies usually every day, and it doesn't exist if this blog can be made a material while taken a rest ･･･ -.
It thinks very much.
Then, today's material is [kore] immediately ↓↓.
- Telephone call road system of digital switchboard for telephone
The telephone call road system is composed of the collection line steps and the distribution steps. The collection line steps have the function to multiplex to the multiplicity corresponding to the highway used in the distribution steps.
These sentences are correct.
- Telephone call road system = collection line steps + steps of distribution
- It multiplexes to the multiplicity corresponding to the highway used in collection line steps = distribution steps.
The collection line steps do the collection line of the traffic from generally the usage rate of the local loops low in the ratio corresponding to the usage rate, and have the function to connect with the distribution steps.
These sentences are correct.
- It connects it with traffic collection line [shite] and the distribution steps in the ratio corresponding to the usage rate of collection line steps = local loops.
The distribution steps have the function to connect the collection line steps between the relay line and collection line steps.
These sentences are correct.
- "Collection line steps → relay line" and "Collection line steps → collection line steps distribution steps =" are connected.
Well, it ..question.. ..[ka].. picks it up at random in the past of the chief telecommunications engineer because I when exhausted when I say what this integral blog does in "Livers of the chief engineer examination are the correction judgments of sentences" think. With ････ in pass approaching when it comes to be able to judge whether the sentences are correct or not correct as such
The problem of the telecommunication chief engineer examination is "A is correct. ""B is correct. "･
･
"A and B are correct. ""B and C are correct. "･
･
･
When the corrections of ..[narou].. sentences can be judged, it after all when it is [tte] feeling, and most rough is [no] ..choice.. problem of eight though thought is a free mass of two [eramondai] to what choice.
It would be greatly appreciated if becoming help to come to be able to judge the correction because it does so and the problem is put out a little therefore.
Then, around here ･･･ though it thinks other color [nna] contents to be preparatory because it is a first day today
This blog is a blog to which "A little" improves as for the memo when "I" chiefly studies the transmission exchange for my juniors.
Because juniors' of [uchi] possibilities to go into the tank at a dash are anyway high when the study set and material are passed to about one
It studies usually every day, and it doesn't exist if this blog can be made a material while taken a rest ･･･ -.
It thinks very much.
Then, today's material is [kore] immediately ↓↓.
- Telephone call road system of digital switchboard for telephone
The telephone call road system is composed of the collection line steps and the distribution steps. The collection line steps have the function to multiplex to the multiplicity corresponding to the highway used in the distribution steps.
These sentences are correct.
- Telephone call road system = collection line steps + steps of distribution
- It multiplexes to the multiplicity corresponding to the highway used in collection line steps = distribution steps.
The collection line steps do the collection line of the traffic from generally the usage rate of the local loops low in the ratio corresponding to the usage rate, and have the function to connect with the distribution steps.
These sentences are correct.
- It connects it with traffic collection line [shite] and the distribution steps in the ratio corresponding to the usage rate of collection line steps = local loops.
The distribution steps have the function to connect the collection line steps between the relay line and collection line steps.
These sentences are correct.
- "Collection line steps → relay line" and "Collection line steps → collection line steps distribution steps =" are connected.
Well, it ..question.. ..[ka].. picks it up at random in the past of the chief telecommunications engineer because I when exhausted when I say what this integral blog does in "Livers of the chief engineer examination are the correction judgments of sentences" think. With ････ in pass approaching when it comes to be able to judge whether the sentences are correct or not correct as such
The problem of the telecommunication chief engineer examination is "A is correct. ""B is correct. "･
･
"A and B are correct. ""B and C are correct. "･
･
･
When the corrections of ..[narou].. sentences can be judged, it after all when it is [tte] feeling, and most rough is [no] ..choice.. problem of eight though thought is a free mass of two [eramondai] to what choice.
It would be greatly appreciated if becoming help to come to be able to judge the correction because it does so and the problem is put out a little therefore.
Then, around here ･･･ though it thinks other color [nna] contents to be preparatory because it is a first day today
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