Question

What layer does Protocol POP3 belong to in the DOD model? and in the OSI Model? Port#? What does it stand for and what does it do?

A) DOD Model: Internet Layer, OSI Model: Network Layer, Port# 110, Stands for Post Office Protocol, retrieves emails from a mail server.
B) DOD Model: Host-to-Host Layer, OSI Model: Transport Layer, Port# 110, Stands for Point of Presence Protocol, manages network access points.
C) DOD Model: Network Access Layer, OSI Model: Data Link Layer, Port# 110, Stands for Post Office Protocol, handles email communication at the data link layer.
D) DOD Model: Application Layer, OSI Model: Application Layer, Port# 110, Stands for Point of Presence Protocol, supports application-level network access.

Answer 1

Protocol POP3 belongs to the Application Layer in both the DOD and OSI models, and it is associated with port number 110. POP3 stands for Post Office Protocol version 3, and its main function is to retrieve emails from a mail server.

Step-by-step explanation:

Protocol POP3 belongs to the Application Layer in both the DOD and OSI models. It is associated with port number 110. POP3 stands for Post Office Protocol version 3, and its main function is to retrieve emails from a mail server.