Cisco Certified Support Technician CCST Networking 100-150 Official Cert Guide

Chapter 6

Network Models

This chapter covers the following exam topics:

• 1. Standards and Concepts

  • 1.1 Identify the fundamental building blocks of networks.

    TCP/IP model, OSI model, frames and packets, addressing

Because models are an abstraction of the way computer networks work, they are often hard to understand. It is also often hard to understand why you should memorize a model of computer network operation. Why not just understand the protocols themselves?

Because having a good mental model of how network protocols work helps you

• Ask the questions required to understand any individual protocol.

• Understand what a protocol should be doing so you can troubleshoot effectively when it is not.

• Understand what a protocol does so you can effectively ...