2009年10月23日

CCNA3 Chapter 8

摘要： 1 Which of the following states the 80/20 rule of end-to-end VLANs? 80% of network resources should be remote and 20% should be on the local VLAN. 80% of VLANs should be static and the remaining 20% should be dynamic. 80% of network traffic should be local and 20% remote. √ 80% of the network so... 阅读全文

posted @ 2009-10-23 23:36 严武 阅读(372) 评论(0) 推荐(0) 编辑

CCNA 3 Chapter 7

摘要： This item references content from the following areas:CCNA Exploration7.1.2 Wireless LAN Standards Assessment Item:Which two conditions have favored adoption of 802.11g over 802.11a? (Choose two.)802.11a suffers from a shorter range than 802.11g. The 2.4 GHz frequency band is not as crowded as the 5 阅读全文

posted @ 2009-10-23 23:29 严武 阅读(316) 评论(0) 推荐(0) 编辑

CCNA 3 Chapter 6

摘要： This item references content from the following areas:CCNA Exploration6.1.2 Interfaces and Subinterfaces Assessment Item:Refer to the exhibit. Which three statements describe the network design shown in the exhibit? (Choose three.)This design will not scale easily. The router merges the VLANs into a 阅读全文

posted @ 2009-10-23 23:28 严武 阅读(344) 评论(0) 推荐(0) 编辑

CCNA 3 Chapter 5

摘要： This item references content from the following areas:CCNA Exploration5.1.2 Issues with Redundancy Assessment Item:Refer to the exhibit. All switches in the network have empty MAC tables. STP has been disabled on the switches inthe network. How will a broadcast frame that is sent by host PC1 be hand 阅读全文

posted @ 2009-10-23 23:26 严武 阅读(356) 评论(0) 推荐(0) 编辑

CCNA 3 Chapter 3

摘要： This item references content from the following areas:CCNA Exploration3.1.1 Introducing VLANs Assessment Item:Which two statements describe the benefits of VLANs? (Choose two.)VLANs improve network performance by regulating flow control and window size. VLANs enable switches to route packets to remo 阅读全文

posted @ 2009-10-23 23:25 严武 阅读(334) 评论(0) 推荐(0) 编辑

CCNA 3 Chapter 4

摘要： This item references content from the following areas:CCNA Exploration4.2.2 VTP Domains Assessment Item:Which statement is true when VTP is configured on a switched network that incorporates VLANs?VTP is only compatible with the 802.1Q standard. VTP adds to the complexity of managing a switched netw 阅读全文

posted @ 2009-10-23 23:25 严武 阅读(428) 评论(0) 推荐(0) 编辑

CCNA 3 Chapter 2

摘要： item references content from the following areas: CCNA Exploration2.1.1 Key Elements of Ethernet/802.3 Networks Assessment Item:When a collision occurs in a network using CSMA/CD, how do hosts with data to transmit respond after the backoffperiod has expired?The hosts return to a listen-before-trans 阅读全文

posted @ 2009-10-23 23:23 严武 阅读(418) 评论(0) 推荐(0) 编辑

CCNA 3 Chapter 1

摘要： This item references content from the following areas:CCNA Exploration1.1.1 The Hierarchical Network Model Assessment Item:Which layer of the hierarchical network design model is refered to as the high-speed backbone of the internetwork,where high availability and redundancy are critical?access laye 阅读全文

posted @ 2009-10-23 23:20 严武 阅读(274) 评论(0) 推荐(0) 编辑

CCNA 3 练习题和答案 Chapter 1

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posted @ 2009-10-23 22:03 严武 阅读(248) 评论(1) 推荐(0) 编辑

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