Question

What layer does Protocol RARP 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: Network, OSI Model: Data Link, Port: 520, Stands for: Reverse Address Resolution Protocol, Function: Resolving MAC addresses to IP addresses
B) DOD Model: Data Link, OSI Model: Physical, Port: 168, Stands for: RARP Link Protocol, Function: Link layer for RARP
C) DOD Model: Transport, OSI Model: Transport, Port: 155, Stands for: Reverse ARP Protocol, Function: Reverse ARP for transport layer
D) DOD Model: Application, OSI Model: Application, Port: 110, Stands for: RARP Application Protocol, Function: Application layer for RARP

Answer 1

RARP operates at the Network layer of the DoD model and at the Data Link layer of the OSI model, without a designated port number. It stands for Reverse Address Resolution Protocol and resolves MAC addresses to IP addresses.

Step-by-step explanation:

The Protocol RARP, or Reverse Address Resolution Protocol, belongs to the Network layer in the Department of Defense (DoD) model and corresponds to the Data Link layer in the OSI model. It does not operate on a specific port since it works below the transport layer, which handles port numbers. RARP stands for Reverse Address Resolution Protocol, and its primary function is to resolve MAC (Media Access Control) addresses to their corresponding IP addresses. Machines on a network use it to request their IPv4 address from a gateway server's RARP table. This is particularly useful for diskless computers that need to know their IP address when they start up and don't have it stored on a hard drive.