不安抗辩权的效力是指先履行一方当事人有权（）。A．中止履行其义务B．解除合同C．中止履行其义务或解

A. by snooping the CoS marking on the incoming frames

B. by using RTP hello messages between the switch port and the Cisco IP Phone

C. by using CDP

D. by using DHCP snooping

E. by snooping the incoming 802.1Q VLAN tag

port in an edge network. It is possible for a Cisco Catalyst switch to check if a Cisco IP Phone is directly attached to that port by:（）

A. using DHCP snooping

B. snooping the incoming 802.1Q VLAN tag

C. using CDP

D. snooping the CoS marking on the incoming frames

A.show ip access-list

B.show access-list

C.list ip interface

D.show interface

E.show ip interface

A. After the router ospf 10 and passive - interface s0/0 commands have been issued , the s0/0 interface will not send any OSPF updates, but will receive routing updates on that interface

B. When you use the passive - interface command with RIPv2, multicasts are sent out the specified interface

C. After the router rip and passive -interface s0/0 commands have been issued, the s0/0 interface will not send any RIP updates, but will receive routing updates on that interface

D. When you use the passive - interface command with EIGRP, hel lo messages are not sent out the specified interface

E. After the router eigrp 10 and passive - interface s0/0 commands have been issued, the s0/0 interface will not send any EIGRP updates, but will receive routing updates on that interface

F. When you use the passive - interface command with OSPF, hello messages are not sent out the specified interface

A．A

B．B

C．C

D．D

A. show ppp authentication

B. debug PAP authentication

C. debug PPP authentication

D. show interface serial0

E. show CHAP authentication

A.user@host> debug interface interface-name

B.user@host> monitor usage interface-name

C.user@host> monitor interface interface-name

D.user@host> traceoptions interface interface-name

8 R2. A DHCP server is deployed on the network and configured to provide IPv6 prefixes.You need to ensure that when you monitor network traffic,you see the interface identifiers derived from the Extended Unique Identifier (EUI)-64 address.Which command should you run？（）

A.netsh.exe interface ipv6 set global addressmaskreply=disabled

B.netsh.exe interface ipv6 set global dhcpmediasense=enabled

C.netsh.exe interface ipv6 set global randomizeidentifiers=disabled

D.netsh.exe interface ipv6 set privacy state=enabled

A.ping atm vci 0.100 interface at-0/1/0 end-to-end

B.ping atm vci 0.100 interface at-0/1/0 circuit

C.ping atm vci 0.100 interface at-0/1/0 far-end

D.ping atm vci 0.100 interface at-0/1/0 final-hop

A.debug packet interface-name

B.show interface extensive

C.traceoptions interface-name

D.monitor traffic interface interface-name