Question

What layer does Protocol SPX 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: Transport, OSI Model: Transport, Port#: 125, Stands for: Sequenced Packet Exchange, Function: Reliable data transfer.
B) DOD Model: Network, OSI Model: Network, Port#: 210, Stands for: Simple Packet Exchange, Function: Basic packet communication.
C) DOD Model: Transport, OSI Model: Session, Port#: 430, Stands for: Session Packet Exchange, Function: Session-based packet transfer.
D) DOD Model: Presentation, OSI Model: Presentation, Port#: 500, Stands for: Secure Packet Exchange, Function: Encrypted data presentation.

Answer 1

Protocol SPX belongs to the Transport layer in both the DOD model and the OSI model.

Step-by-step explanation:

Protocol SPX belongs to the Transport layer in both the DOD model and the OSI model. The Port# for SPX is 125. SPX stands for Sequenced Packet Exchange, and its function is to provide reliable data transfer.