Question

What layer does Protocol Telnet belong to in the DOD model? and in the OSI Model? Port#? What does it stand for and what does it do?

A) DOD: Application, OSI: Presentation, Port: 23, Stands for: Terminal Network, Allows remote login
B) DOD: Application, OSI: Application, Port: 21, Stands for: Transfer Network, Allows file transfer
C) DOD: Host-to-Host, OSI: Transport, Port: 80, Stands for: Transmission Protocol, Ensures reliable data delivery
D) DOD: Host-to-Host, OSI: Network, Port: 53, Stands for: Domain Name System, Resolves domain names to IP addresses

Note: The options provided for the network protocols are based on general knowledge and may not cover all specific details of each protocol.

Answer 1

Protocol Telnet is part of the Application layer in both the DoD and OSI models. It uses port 23, stands for Terminal Network, and allows users to remotely log into other computers.

Step-by-step explanation:

The Protocol Telnet belongs to different layers in the Department of Defense (DoD) model and the Open Systems Interconnection (OSI) model. In the DoD model, Telnet is categorized under the Application layer, and in the OSI model, it is also in the Application layer. The correct port number for Telnet is 23. The term Telnet stands for Terminal Network and it is used to provide a bidirectional interactive text-oriented communication facility using a virtual terminal connection. Essentially, Telnet allows for remote login to another computer over a network, as if the user was physically present at the terminal of the remote machine. Hence, the correct option with respect to the given choices is B) DOD: Application, OSI: Application, Port: 23, Stands for: Terminal Network, Allows remote login.