Which command shows all the paging spaces available on a system？（）  

A . show session B . show cdp neighbors C . show users D . show queue

A . Serial0/1 is up, line protocol is down B . Serial0/1 is down, line protocol is down C . Serial0/1 is up, line protocol is up D . Serial0/1 is administratively down, line protocol is dow

A . Router(config)#password-encryption B . Router(config)#service password-encryption C . Router#service password-encryption D . Router# password-encryptio

A .  The current control file is not automatically backed up every time you perform a backup. B .  The backups save space on the storage media. C .  While performing backups across a network， the network bandwidth is reduced. D .  The backups consist of backup pieces.

A .  IGMP snooping is not active for VLAN 120 because the IGMP feature has not been enabled on the switch with the feature igmp command. B .  The IGMP snooping querier for VLAN 120 is not in a running state because the Loopback interface configured with 1.1.1.1/32 is currently in a down state. C .  IGMP snooping has been disabled on the VLAN 120 SVI. D .  IGMP snooping has been disabled for VLAN 120 in VLAN configuration mode. E .  IGMP snooping is not active for VLAN 120 because VLAN 120 does not exist in the VLAN database.

A . show configuration B . show environment C . show inventory D . show platform E . show versio

A . lssrc a B . lssrc g C . lssrc l D . lssrc -

A . Either the -a or flag -b may be used, but not both. B . If the flag -a is used then the flag -b also must be used. C . One of the -a or -b flags must be used, but not both at the same time. D . Both the flags may be used together, but neither are mandatory.

A . show ip interface [interface] access-lists B . show ip access-lists interface [interface] C . show ip interface [interface] D . show ip access-lists [interface]

A . lssrc a B . lssrc g C . lssrc l D . lssrc -

A . The IP addresses of workstations allowed gain access to the router via an access list B . Permanent name-to-address mappings created using the ip host command. C . Temporary and permanent DNS entries. D . The names of the routers created using the hostname command. E . The length of time of users logged into the router, as well as the duratio

A . lscfg B . lsdev C . netstat D . ifconfig

A . show ip eigrp topology B . show ip eigrp topology all - links C . show ip route eigrp D . show ip route eigrp all - links E . show ip eigrp topology all - learned

A . lsps -a B . showps -a C . psdisplay -l D . swaplist -ALL

A . show ip interface [interface] access-lists B . show ip access-lists interface [interface] C . show ip interface [interface] D . show ip access-lists [interface]

A . show mac-address B . show arp C . show table D . show switchport

A . show ip ospf database external B . show ip ospf database nssa - external C . show ip route ospf D . show ip ospf datab ase summary E . show ip route

A .  trace B .  netstat C .  ifconfig D .  nslooku

A . dumpctrl B . sysdumpdev C . livedumpdev D . livedumpctrl

A . show session B . show cdp neighbors C . show users D . show queue

A . errpt -A  B . errpt -a  C . errlog -a  D . errlog -l

A. Adds all routes for which the metric is ＜= 200 * the best metric among all routes B. Adds all routes because of the ridiculously high variance setting C. Adds all successor and feasible successor routes D. Adds all successor and feasible successor routes for which the metric is＜=200 * the best metric among all routes

A. show ip eigrp topology B. show ip eigrp topology all - links C. show ip route eigrp D. show ip route eigrp all - links E. show ip eigrp topology all - learned

是 否