單項(xiàng)選擇題The network administrator is asked to configure 113 point-to-point links.Which IP addressing scheme best defines the address range and subnet mask that meet the requirement and waste the fewest subnet and host addresses?（）

A. 10.10.0.0/18 subnetted with mask 255.255.255.252
B. 10.10.0.0/25 subnetted with mask 255.255.255.252
C. 10.10.0.0/24 subnetted with mask 255.255.255.252
D. 10.10.0.0/23 subnetted with mask 255.255.255.252
E. 10.10.0.0/16 subnetted with mask 255.255.255.252


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D. authentication

3.單項(xiàng)選擇題When a host transmits data across a network to another host, which process does the data go through?（）

A. standardization
B. conversion
C. encapsulation
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4.單項(xiàng)選擇題A network admin wants to know every hop the packets take when he accesses cisco.com. Which command is the most appropriate to use?（）

A. path cisco.com
B. debug cisco.com
C. trace cisco.com
D. traceroute cisco.com

5.單項(xiàng)選擇題Which line from the output of the show ip interface command indicates a layer 1 problem?（）

A. Serial0/1 is up, line protocol is down
B. Serial0/1 is down, line protocol is down
C. Serial0/1 is up, line protocol is up
D. Serial0/1 is administratively down, line protocol is down

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Which name describes an IPV6 host-enable tunneling technique that uses IPV4 UDP,does not require dedicated gateway tunnels,and can pass through existing IPV4 NAT gateways?（）

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Which statement is true, as relates to classful or classless routing?（）

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A router receives information about network 192.168.10.0/24 from multiple sources.What will the router consider the most reliable information about the path to that network?（）

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When you are troubleshooting an ACL issue on a router,which command can help you to verify which interfaces are affected by the ACL?（）

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At which layer of the OSI model dose PPP perform?（）

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Which encapsulation type is a Frame Relay encapsulation type that is supported by Cisco routers?（）

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An employee of ABC company has move to an office on a different floor. Although the administrator is able to telnet to all of the routers,the address of Switch F is needed in order to verify that the employee remains in the same VLAN.Which action could be used by the administrator to find the IP address of Switch F?（）

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At which layer of the OSI model is RSTP used to prevent loops?（）

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