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CISA® Certified Information Systems Auditor®: Study Guide, Third Edition by David Cannon

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Expanding the Network

Modern routers can connect high-speed LANs to remote places for the purpose of creating a wide area network (WAN). Figure 4-42 shows what a WAN might look like.

Figure 4-42: Expanding the network

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Remote access is a popular feature. WANs are similar to a LAN; however, the implementation is different. Special equipment is necessary to adapt the transmission signal to telephone and radio equipment. Figure 4-42 shows the basics of expanding a network.

Setting up a WAN requires planning. Let’s start with the most important component, which is information. The first thing you need is the customer requirements. What does the customer ...

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