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This chapter is from the book

This chapter is from the book

Exam Preparation Tasks

Review All the Key Topics

Review the most important topics from inside the chapter, noted with the Key Topic icon in the outer margin of the page. Table 3-4 lists these key topics and the page numbers where each is found.

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Table 3-4 Key Topics for Chapter 3

Key Topic Element

Description

Page Number

List, Figure 3-2

Common coaxial connectors

64

List

Categories of UTP cabling

66

List, Figure 3-5

Common twisted-pair connectors

68

Figure 3-7

Light propagation in multimode fiber

71

Figure 3-8

Light propagation in single-mode fiber

71

List, Figure 3-9

Common fiber-optic connectors

73

Figure 3-10

Example: Cable distribution system

74

List

Three types of Ethernet hubs

78

Figure 3-14

Ethernet hub

79

Figure 3-15

Ethernet bridge

79

Figure 3-26

Layer 2 Ethernet switch

87

Figure 3-27

Multilayer Ethernet switch

88

Figure 3-28

Router

89

Table 3-1

Network infrastructure device characteristics

89

Figure 3-29

VPN concentrator

90

Figure 3-30

Firewall

91

Figure 3-31

DNS server

92

Figure 3-32

Hierarchical domain name structure

93

Table 3-2

Common DNS record types

93

Step list

Obtaining IP address information from a DHCP server

95

Figure 3-34

Proxy server operation

96

Figure 3-35

Content engine operation

98

Figure 3-36

Content switching operation

98

Figure 3-37

Virtual server

100

Figure 3-38

Virtual server with a virtual switch

101

Figure 3-39

Virtual desktop topology

102

Figure 3-40

Sample VoIP network topology

104

Table 3-3

VoIP network elements

105

Complete Tables and Lists from Memory

Print a copy of Appendix D, “Memory Tables” (found on the DVD), or at least the section for this chapter, and complete the tables and lists from memory. Appendix E, “Memory Table Answer Key,” also on the DVD, includes completed tables and lists so you can check your work.

Define Key Terms

Define the following key terms from this chapter, and check your answers in the Glossary:

  • coaxial cable

  • twisted-pair cable

  • shielded twisted-pair cable

  • unshielded twisted-pair cable

  • electromagnetic interference (EMI)

  • plenum

  • multimode fiber (MMF)

  • single-mode fiber (SMF)

  • 66 block

  • 110 block

  • hub

  • switch

  • router

  • multilayer switch

  • firewall

  • Domain Name System (DNS) server

  • Dynamic Host Configuration Protocol (DHCP)

  • proxy server

  • content engine

  • content switch

  • virtual server

  • virtual switch

  • virtual desktop

  • on-site

  • off-site

  • network as a service (NaaS)

  • virtual PBX

  • Session Initiation Protocol (SIP)

  • Real-time Transport Protocol (RTP)

Complete Chapter 3 Hands-On Labs in Network+ Simulator Lite

  • Contrast Virtualization Technologies and Services
  • Using ARP to Discover a MAC Address
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