真正美的东西,都是充满了感情的。面对美的东西,我们常常一往情深,或者一见钟情。而感情这个东西很奇怪,一方面,它是个人的,富有极端强烈的个性色彩,只有达到高度个性化的时候,它才是最真挚的。正因为这样,感情这个东西常常是隐秘的,人与人之间难于传达,所谓父不能喻之于子,夫不能喻之于妻;然而,另一方面,感情这个东西却又最具有社会性,最需要普遍的传达,最需要人与人之间的交流。这段文字意在说明()。

A. show interfaces serial 0/0

B. show running-config

C. show version

D. show controllers serial 0/0

E. show ip interface

F. show line serial 0/0

A．snap -R

B．snap -D

C．snap -U

D．snap -N

A.(config-if)#authentication ppp chap fallback ppp

B.(config-if)#authentication ppp chap pap

C.(config-if)#ppp authentication chap pap

D.(config-if)#ppp authentication chap fallback ppp

A.debug icmp

B.debug ip icmp

C.debug tcp

D.debug packet

A．A

B．B

C．C

D．D

A. Serial 0 is down, line protocol is down

B. Serial 0 is up, line protocol is up

C. Open: IPCP, CDPCP

D. LCP closed

E. LCP open

A．lscons -l

B． cat /var/conslog

C． alog -t console -o

D． lslog /var/adm/conslog

A.show frame-relay map

B.show frame-relay lmi

C.show inter serial

D.show frame-relay pvc

A. PPP

B. IP

C. Compression

D. IPX

E. Multilink

F. ATX

A. The default administrative distance is used.

B. The command is used to establish a static route.

C. The command is used to configure the router interfaces.

D. The command is used to establish a stub network.

E. The subnet mask for the source address is 255.255.255.0