Questions and Answers

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Page

Lesson 4 Practice

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For each of the following pieces of information, give a reason why a network infra-

structure blueprint would contain that information.

1. Locations of fluorescent light fixtures

For a network that uses copper-based cables, fluorescent light fixtures can be a significant

source of electromagnetic interference. A network blueprint should contain the locations of

these fixtures so that the network designer can route cables around them.

2. Cable color

For a network using an external cable installation, matching the cable color to the wall color can

help make the cables less visible.

3. Ceiling height

Cable length measurements must include vertical as well as horizontal distances. Specifying

ceiling height enables the network designer to account for vertical cable runs from the ceiling

down to the wall plate.

4. Size of cable conduits running between floors

The configuration of a large network in a building with several floors can be partially dependent

on the amount of space available to run cables between floors. If this space is limited, it might

not be practical to run a large number of cables to centrally located hubs in a data center. The

designer might have to locate individual hubs on each floor instead.

5. Locations of locked rooms and closets

In most cases, it is best to place servers, hubs, routers, and other critical or expensive devices

in physically secure locations. A network blueprint should specify these secure locations.

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Lesson 4 Review

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1. List one piece of information that a diagram of an external cable installation needs

that an internal installation diagram does not need.

The diagram should specify where and how the cables are to be secured.

2. Which of the following is the term for a LAN that connects all the computers on a

single floor of a building?

a. Backbone network

b. Horizontal network

c. Internetwork

d. Patch panel

b