[单选题]为了连接“帧中继”线路,网络中的路由器需要提供的端口类型为()
正确答案 :B
Serial
[单选题]对路由器的描述,正确的是()
正确答案 :C
多广播域,单冲突域的设备
[单选题]RIP路由协议认为“网络不可到达”的跳数是:()
正确答案 :B
16
[单选题]路由器上,清空路由表的命令是()
正确答案 :D
clearip route*
[单选题]查看路由表的命令是:()
正确答案 :C
show ip route
[单选题]Which one of the following characteristics is true regarding the use of hubs and switches?
正确答案 :E
Switches increase the number of collision domains in the network.
解析:解析:Explanation:Switchesincreasesthenumberofcollisionsdomainsinthenetwork.SwitchesthatareconfiguredwithVLANswillreducethesizeofthecollisiondomainsbyincreasingthenumberofcollisiondomainsinanetwork,butmakingthemsmallerthanthatofonebig,flatnetwork.IncorrectAnswers:A.SwitchesarecapableofVLANconfigurations,buthubsarenot.B.Hubsaregenerallytheleastcostlymethodpossibletoconnectmultipledevicestogetherinanetwork.C.Switchesforwardbroadcastsandmulticasts,bydefault,toallportswithinthesameVLAN.Onlyroutersblockallbroadcasttrafficbydefault.D.Switchesandhubscanbeequallyefficientinprocessingframes,intheory.Inpractice,switchesaregenerallymoreefficientastheyusuallyhavemoreCPUandmemoryallocatedtothem,andaregenerallymuchmoreexpensivethanasimplehub.
[单选题]关于PPP和HDLC的说法中,错误的是()
正确答案 :D
在配置ISDN时,广域网协议不能封装成PPP,但可以封装成HDLC
[单选题]通过路由器的“配置端口console”对路由器进行配置,应该使用的线缆为()
正确答案 :C
反转线缆
[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:
[多选题]下列哪一设备工作时,要用到OSI的七个层(一层到七层)()
正确答案 :ABC
PC
网管机
WEB服务器
解析:ABC
查看原题