單項選擇題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

6.單項選擇題Which pairing reflects a correct protocol-and-metric relationship?()

A. OSPF and mumber of hops and reliability
B. EIGRP and link cost
C. IS-IS and delay and reliability
D. RIPv2 and number of hops

8.單項選擇題Which Cisco IOS diagnostics command can disrupt the operation of a router under high-load conditions?()

A. show running-config
B. show processes cpu
C. debug all
D. logging host ip address

9.單項選擇題Which command encrypts all plaintext passwords?()

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

10.單項選擇題Which encapsulation type is a Frame Relay encapsulation type that is supported by Cisco routers?()

A. IETF
B. HDLC
C. Q9333-A Annex A
D. ANSI Annex D

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What is the subnetwork address for a host with the IP address 201.100.5.68/28?()

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While troubleshooting a network problem,a technician discovers that the current copy of the Cisco IOS is outdated and needs to be updated.Which of the following commands would the technician issue to replace the Cisco router IOS with the newer version?()

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Three switches are connected to one anther via trunk ports.Assuming the default switch configuration,which switch is elected as the root bridge for the spanning-tree instance of vlan 1?()

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Which statement describes the rule of split horizon?()

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On which options are standard access list based?()

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What is the default administrative distance of OSPF?()

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Which statement is true, as relates to classful or classless routing?()

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Which command is used to display the collection of OSPF link states?()

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