CCNA系列认证CCNA(640-801)章节练习(2019.05.07)

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1 The Testking network is implementing dialup services for their remote employees.Testking uses several different Layer 3 protocols on the network. Authentication ofthe users connecting to the network is required for security. Additionally, some employees will be dialing long distance and will need callback support.Which protocol is the best choice for these remote access services?（）

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2

The TestKing network Topology is displayed in the exhibit below


A switch has been configured for three different VLANs: VLAN 2, VLAN 3, andVLAN 4. For the purposes of communication between VLANs a router is to beadded. Host from one VLAN should be able to reach the hosts in the other VLANs.
Based on this requirement, what type of connection is acceptable between the routerand switch?（）

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3 What are some of the characteristics of the OSPF routing protocol?（）

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4 Which of the following are VLAN frame encapsulation types that may be configured on a Catalyst switch?（）

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5 By default, which of the following factors determines the spanning-tree path cost?（）

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6 You have a single Class C IP address and a point-to-point serial link that you want to implement VLSM on. Which subnet mask is the most efficient?（）

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7 Which is the correct fallback sequence for loading the Cisco IOS?（）

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8 What should be done prior to backing up an IOS image to a TFTP server?（）

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9 Which one of the following statements best explains the split horizon rule used in distance vector routing protocols?（）

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10 Regarding PAR (Positive Acknowledgement and Re-transmission), which of the answer choices below are correct?（）

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