Syngress - Eleventh Hour Network+ Exam N10-004 Study Guide (11 ...

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88 CHAPTER 5 The OSI Model and Networking Protocols 2. Correct answer and explanation: D. 802.11 Standards such as 802.11, 802.11b, 802.11a, and 802.11g are related to wireless networking. Incorrect answers and explanations: A, B, and C. Answer A is incorrect, Token Ring maps to the 802.5 standard. Answer B is incorrect, Wired Ethernet maps to the 802.3 standard. Answer C is incorrect, Metropolitan Area Network (MAN) maps to the 802.6 standard. 3. Correct answer and explanation: B. The 802.5 standard defines a Token Ring network. Token Ring uses token passing as its method of communicating on the network. Incorrect answers and explanations: A, C, and D. Answer A is incorrect, direct-sequence is a HYPERLINK “http://en.wikipedia.org/wiki/ Modulation“ ø “Modulation“ modulation technique used by telecommunication technologies. Answer C is incorrect, CSMA/CD is used by Ethernet which maps to the 802.3 standard. Answer D is incorrect, CSMA/CA is used by wireless LANs which maps to the 802.11 standard. 4. Correct answer and explanation: D. A MAC address consists of six hexadecimal numbers. The highest possible hexadecimal number is FF:FF:FF:FF:FF:FF, which denotes a broadcast. The first three bytes contain a manufacturer code and the last three bytes contain a unique station ID. The numbers are counted from 0 to 9 and then lettered A to F before adding another digit. The letters A to F represent decimal numbers 10 to 15, respectively. Incorrect answers and explanations: A, B, and C. Answer A is incorrect because a quick scan of the hex shows a letter “K” used, which is not in the base16 numbering system. Answer B is incorrect, because it is displaying the IP address format, which is based on binary. Answer C is incorrect, as a quick scan of the hex shows a letter “J” used, which is not in the base16 numbering system. 5. Correct answer and explanation: C. CSMA/CD is used on multiple access networks as defined in the IEEE 802.3 specification. Incorrect answers and explanations: A, B, and D. Answer A is incorrect, 802.1does not utilize CSMA/CD. Answer B is incorrect, 802.2 does not utilize CSMA/CD. Answer D is incorrect, 802.5 does not utilize CSMA/CD.
CHAPTER 6 TCP/IP and Routing 89 Exam objectives in this chapter ■ Transmission Control Protocol/Internet Protocol ■ Understanding IP Addressing ■ Understanding Subnet Masking ■ Strategies to Conserve Addresses ■ Multicast, Broadcast, and Unicast ■ Understanding Basic IP Routing TRANSMISSION CONTROL PROTOCOL/INTERNET PROTOCOL Transmission Control Protocol/Internet Protocol (TCP/IP) is a suite of protocols; two of the components in the suite form the protocol’s name: TCP and IP. IP was developed as part of the TCP effort to provide logically addressed and structured networking. The primary role of IP is to provide logical addresses and support the routing of traffic to its destination. Fast Facts ■ ■ ■ The most fundamental aspect of IP is its addresses. Public IPv4 addresses are nearly exhausted. Efforts to expand the capacity of IP addresses have resulted in the next generation of the protocol, IP version 6 (IPv6).
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xii About the Authors Technical Edi
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20 CHAPTER 2 Network Media DID YOU
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22 CHAPTER 2 Network Media Table 2.
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28 CHAPTER 2 Network Media LAN TECH
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144 CHAPTER 9 Network Management
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150 CHAPTER 9 Network Management
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156 CHAPTER 10 Network Troubleshoot
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Glossary 177 Access Determines who
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Glossary 179 Extensible Authenticat
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Glossary 181 Oscilloscope A cable t
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186 Index Data link layer, 74-75 fu
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188 Index Network troubleshooting,
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