[单选题]对于使用链路状态路由协议的路由器如何选择最佳路线到达子网，下列哪项是正确的（）

正确答案 ：B

通过针对链路状态数据库中的信息运行SPF算法，路由器会计算出最佳路由

[单选题]帧中继环境中，CIR的含义是（）

正确答案 ：B

保证线路速率

[单选题]An administrator issues the show ip interface s0/0 command and the output displays that interface Serial0/0 is up, line protocol is up.What does "line protocol is up" specifically indicate about the interface?

正确答案 ：C

Keepalives are being received on the interface.

解析：解析：Explanation:

[单选题]IP地址为：192.168.50.70，掩码为：255.255.255.248，则该IP地址所在子网的广播地址为（）

正确答案 ：D

192.168.50.71

[单选题]为了使配置私有IP的设备能够访问互联网，应采用的技术是()

正确答案 ：A

NAT

[单选题]配置路由器特权用户“加密密码”的命令是：()

正确答案 ：C

enable secret

[单选题]Assuming you build networks to exact specifications, what is the recommended maximum length a 10BaseT cable can be before it has to be segmented or repeated?

正确答案 ：A

100 meters

解析：解析：Explanation:

[单选题]A Ezonexam technician is troubleshooting connectivity problems between two routers that are directly connected through the serial line. The technician notices that the serial line is up but cannot see any neighbors displayed in the output of the show cdp neighbors command.In which OSI layer is the problem most likely occurring?

正确答案 ：B

Data link

解析：解析：Explanation:Asthequestionstatesthatseriallineisup,itmeanstheproblemisnotontheNetworklayer.Theadministratorcannotseeanyoutputbyissuingtheshowcdpneighborscommand.ItmeansthatCDPisdisabledandCDPisaprotocolthatrunsoverLayer2(thedatalinklayer)onallCiscorouters,bridges,accessservers,andswitches.

[单选题]A new Ezonexam switch is installed into an existing LAN and a new VTP trunk is set up with an existing switch. Which VLANs will be allowed on this new trunk?

正确答案 ：A

All defined VLANs are allowed on the trunk by default.

解析：解析：Explanation:

[单选题]You have just purchased a brand new router and wish to have the router prompt you through the initial configuration commands. Which router mode does this describe?

正确答案 ：B

SETUP mode

解析：解析：Explanation:

查看原题 点击获取本科目所有试题