Appendix I. Memory Tables Answer Key

Chapter 2

1:

Table I-1. Summary: Same-Layer and Adjacent-Layer Interactions

Concept

Description

Same-layer interaction on different computers

The two computers use a protocol to communicate with the same layer on another computer. The protocol defined by each layer uses a header that is transmitted between the computers, to communicate what each computer wants to do.

Adjacent-layer interaction on the same computer

On a single computer, one layer provides a service to a higher layer. The software or hardware that implements the higher layer requests that the next lower layer perform the needed function.

2:

Table I-2. OSI Functional Summary

Layer

Functional Description

Application (7)

Interfaces between network and application ...

Get CCENT/CCNA ICND1 Official Exam Certification Guide (CCENT Exam 640-822 and CCNA Exam 640-802), Second Edition now with O’Reilly online learning.

O’Reilly members experience live online training, plus books, videos, and digital content from 200+ publishers.