What can be specified in IP VACLs?（）

单项选择题A Cisco Catalyst switch is part of the CIS network. As an experienced network administrator, you are thinking of filtering the traffic within VLANI00 with the use of a VACL named test on that switch. Which of the following command will enable that?（）

A. interface vlan 100 ip access-group test in
B. interface vlan 100 ip access-group test
C. vlan access-map test 100
D. vlan filter test vlan-list 100

多项选择题avoid Layer 2 loops. Which two of the following are most probably the reasons for that preference?（）

A. Information about port roles is sent to all switches.
B. RSTPs that are based on Cisco products require no additional configuration.
C. Features such as UplinkFast and BackboneFast are compatible with RSTP.
D. An RSTP that is based on Cisco products generally performs better than the Cisco proprietary 802.1D enhancements.

单项选择题As an experienced Network Engineer, you are responsible for network connectivity and system configuration. Which of the following protocols will be supported by Cisco Nonstop Forwarding (NSF)?（）

A.ISSU，OSPF，IS-IS
B.IETF，OSPF，ISSU
C.IS-IS，EIGRP，SSO，BGP
D.EIGRP，BGP，OSPF，IS-IS

单项选择题As a network administrator, you have configured a Catalyst 6500 Series Switch with redundant supervisor engine in a CIS network. What is the result of issuing the redundancy force-switchover command on that switch?（）

A. Automatic switchover from active to standby on primary supervisor failure
B. Reset of the primary supervisor.
C. Manual switchover from active to standby supervisor
D. Manual switchover from standby to active supervisor

单项选择题As an experienced technician, you are required to configure and verify SRM with SSO redundancy. In such a situation, you have to issue several commands in proper orders. Which of the following is correct?（）

A. show redundancy states, redundancy, mode sso
B. show redundancy states, mode sso, redundancy
C. redundancy, mode sso, show redundancy states
D. mode sso, redundancy, show redundancy states