单项选择题What is the alternative notation for the IPV6 address B514:82C3:0000:0000:0029:EC7A:0000:EC72?()

A. B514:82C3:0029::EC7A:0000:EC72
B. B514:82C3:0029:EC7A:EC72
C. B514:82C3::0029:EC7A:0:EC72
D. B514:82C3::0029:EC7A:EC72


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1.单项选择题DNS servers provide what service?()

A. They run a spell check on host names to ensure accurate routing
B. They convert domain names into IP address
C. Given an IP address,they determine the name of the host that is sought
D. They map individual hosts to their specific IP addresses

3.单项选择题Which spread spectrum technology does the 802.11b standard define for operation?()

A. IR
B. DSSS
C. FHSS
D. DSSS and FHSS
E. IR, FHSS, and DSSS

4.单项选择题A cisco router is booting and has just completed the POST process.It is now ready to find and load an IOSimage.what function does the router perform next?()

A. It checks the configuration register
B. It attempts to boot from a TFTP server
C. It loads the first image file in flash memory
D. It inspects the configuration file in NVRAM for boot instructions

5.单项选择题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?()

A. incorrect bandwidt h configuration
B. incorrect LMI configuration
C. incorrect map statement
D. incorrect IP address

6.单项选择题Which command enables IPv6 forwarding on a cisco router?()

A. ipv6 host
B. ipv6 unicast-routing
C. ipv6 local
D. ipv6 neighbor

7.单项选择题In the implementation of VLSM techniques on a network using a single Class C IP address,which subnet mask is the most efficient for point-to-point serial links?()

A. 255.255.255.240
B. 255.255.255.254
C. 255.255.255.252
D. 255.255.255.0
E. 255.255.255.248

8.单项选择题Which IPv6 address is valid?()

A. 2031:0:130F::9C0:876A:130B
B. 2001:0DB8:0000:130F:0000:0000:08GC:140B
C. 2001:0DB8:0:130H::87C:140B
D. 2031::130F::9C0:876A:130B

9.单项选择题Which of the following protocols uses both TCP and UDP ports?()

A. SMTP
B. Telnet
C. FTP
D. DNS

10.单项选择题Which command enhances the 802.1D convergence time on ports that are connected to hosts?()

A. spanning-tree backbonefast
B. spanning-tree uplinkfast
C. spanning-tree portfast
D. spanning-tree cost512

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A network administrator is trying to add a new router into an established OSPF network.The networks attached to the new router do not appear in the routing tables of the other OSPF routers.Given the information in the partial configuration shown below,what configuration error is causing this problem?()Router(config)#router ospf 1Router(config-router)#network 10.0.0.0 255.0.0.0 area 0

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