（）命令被用来验证中继链路的配置状态。

A . ISL（Inter Switch Link） B . IEEE 802.1Q C . IEEE 802.1D D . VTP（VLAN Trunking Protocol）

A . show frame-relay end-to-end B . show frame-relay map C . show frame-relay lmi D . show frame-relay pvc

A . network B . user C . idle D . 以上都不是

A . show interfaces interface B . show interface trunk C . show interfaces switchport D . show ip interface brief E . show interfaces vla

A . 未安装或故障 B . 故障 C . 未知或故障 D . 未知

A . 正确 B . 错误

A . show vtp status B . shwo vtp counters C . shwo vtp statistics D . shwo vtp status counters E . shwo vtp statistics counter

A . A、arpa B . B、ansi C . C、ietf D . D、cisco-compatiable E . E、Q.933a F . F、Cisco

A . A、dialertimeridle B . B、dialertimercompete C . C、dialertimerenable D . D、dialertimerwait-carrier

A . dialer time ridle B . dialer time rcompete C . dialer time renable D . dialer time rwait-carrier

A . A、70% B . B、50% C . C、75% D . D、80%

A . A、diater idte-timeout B . B、diater fast-idle C . C、diater enable-timeout D . D、diater wait-for-carmer-time

A . finger B . B、Ping C . C、tracert D . D、ipconfig

A . DISPLAY frame-relay pvc B . DISPLAY frame-relay map C . DISPLAY frame-relay traffic D . DISPLAY frame-relay lmi

A . SET H248LNK B . ADD H248LNK C . SET H248PARA D . ADD IPADDR

A . ping address B . tracert address C . traceroute address D . arp addre

A . A、70% B . B、50% C . C、75% D . D、80%

A . 增加PVC记录 B . 删除已断掉的PVC记录 C . 监控PVC状态的变更 D . 链路完整性验证

A .  show interfaces interface B .  show interfaces trunk C .  show interfaces switchport D .  show ip interface brief E .  show interfaces vla

A . 未安装或故障 B . 故障 C . 未知或故障 D . 未知

A．show frame-relay map B．show frame-relay lmi C．show inter serial D．show frame-relay pvc

A．250 B．241 C．220 D．136