CISSP Training Guide

Introduction

This chapter explores the devices and technologies that constitute and define networks. We start with an examination of the Open Systems Interconnection (OSI) model and how it facilitates network communications. We then look at the network characteristics and topologies, including local area network and wide area network devices, services, and protocols. We will also define what a firewall is and is not, and look at methods of providing remote access to internal resources. After we have defined the things that constitute a network, we will start looking at methods of protecting the data and resources that run on our networks. We will finish with a look at fault tolerance and data redundancy.

As mentioned, the Telecommunications and ...