The layer model of TCP/IP is set.

Hello.
Today's chief telecommunications engineer's problem is delivered by the TCP/IP relation. Please work lightly because it is feeling like a basic problem of OSI reference model who tend to be very very. Then, today's problem is [kochira] ↓↓.



- Layer model of TCP/IP in the wide sense



Being located in the highest layer is a network interface layer, and the function to achieve the communication on the transmission line between the adjoining nodes is possessed.

These sentences are wrong.
- It is a layer model of TCP/IP, "Network interface layer" is an undermost layer, and the highest layer is an application layer. ｡｡



The Internet layer has the function to do [ru-chingu] such as IP packets, and there is IP in the protocol in this layer.

These sentences are correct.
- Because the Internet layer is a hierarchy to which OSI reference model's "Network layer" corresponds, these sentences are answered correctly.



The transport layer enables the communication between the applications that a different host has, and there is Telnet in the protocol in this layer.

These sentences are wrong.
- It shall not not be a transport layer, and the application layer be none here. ｡｡



In the application layer, there are a lot of protocols used for a specific application, and are a FTP for the file transfer, SMTP for network management, and SNMP for the E-mail forwarding, etc.

These sentences are wrong.

- ..network management.. SMTP for the E-mail forwarding ..SMTP.. reverses by feeling.



How?･･･ though chief telecommunications engineer's qualification is acquired easily when increasing .."Service problem".. a little more ..so.. Then around here today