CCNA系列认证CCNA(640-802)章节练习(2019.10.14)

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1 Host 1 is trying to communicate with Host 2. The e0 interface on Router C is down. Which of the following are true?（）

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2 What are two security appliances that can be installed in a network?（）

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3 Router A is unable to reach Router B.Both routers are running ios version 12.0.After reviewing the command output and graphic,what is the most likely cause of the problem?（）

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4 A system administrator installed a new switch using a script to configure it. IP connectivity was tested using pings to SwitchB. Later attempts to access NewSwitch using Telnet from SwitchA failed. Which statement is true?（）

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5 When configuring a serial interface on a router, what is the default encapsulation?（）

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6 A network interface port has collision detection and carrier sensing enabled on a shared twisted pair network. From this statement, what is known about the network interface port?（）

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7 How many bits are contained in each field of an IPv6 address?（）

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8 Which two benefits are provided by using a hierarchical addressing network addressing scheme?（）

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9 An inbound access list has been configured on a serial interface to deny packet entry for TCP and UDP ports21, 23 and 25. What types of packets will be permitted by this ACL? (Choose three.)（）

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10

Which routing protocols can be used within the enterprise network shown in the diagram?（）

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