單項(xiàng)選擇題What is the purpose of the cisco Vlan Trunking protocol?（）

A. to provide a mechanism to dynamically assign vlan membership to switch ports
B. to allow traffic to be carried from multiple vlans over a single link between switches
C. to allow native vlan information to be carried over a trunk link
D. to provide a mechanism to manually assign vlan membership to switch ports
E. to allow for managing the additions,deletions,and changes of vlans between switchs


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1.單項(xiàng)選擇題Which cisco ios command can help to determine the timing of various debug events,relative to each other,when you are debugging a complicated router issue?（）

A. service timestamps debug datetime msec
B. show clock detail
C. clock calendar-valid
D. service timestamps log datetime msec

2.單項(xiàng)選擇題On which options are standard access list based?（）

A. source address and subnet mask
B. destination address and wildcard mask
C. source address and wildcard mask
D. destination address and subnet mask

3.單項(xiàng)選擇題A network administrator needs to configure a serial link between the main office and a remote location.The router at the remote office is a non-cisco router. How should the network administrator configure the serial interface of the main office router to make the connection?（）

A. Main(config)#interface serial 0/0  Main(config-if)#ip address 172.16.1.1 255.255.255.252  Main(config-if)#no shut
B. Main(config)#interface serial 0/0  Main(config-if)#ip address 172.16.1.1 255.255.255.252  Main(config-if)#encapsulation ietf Main(config-if)#no shut
C. Main(config)#interface serial 0/0  Main(config-if)#ip address 172.16.1.1 255.255.255.252  Main(config-if)#encapsulation frame-relay  Main(config-if)#authenication chap Main(config-if)#no shut
D. Main(config)#interface serial 0/0  Main(config-if)#ip address 172.16.1.1 255.255.255.252   Main(config-if)#encapsulation ppp Main(config-if)#no shut

4.單項(xiàng)選擇題What is the result of issuing the frame-relay map ip 192.168.1.2 202 broadcast command?（）

A. defines the source IP address that i s used in all broadcast packets on DLCI 202
B. defines the DLCI that is used for all packets that are sent to the 192.168.1.2 IP address
C. defines the destination IP address that is used in all broadcast packets on DLCI 202
D. defines the DLCI on which packets from the 192.168.1.2 IP address are received

5.單項(xiàng)選擇題How are VTP advertisements delivered to switches across the network?（）

A. anycast frames
B. multicast frames
C. broadcast frames
D. unicast frames