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


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1.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

2.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

3.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

4.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

5.單項(xiàng)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

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How are VTP advertisements delivered to switches across the network?（）

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At which layer of the OSI model is RSTP used to prevent loops?（）

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A network administrator is planning a network installation for a large organization.The design requires 100 separate subnetworks,so the company has acquired a Class B network address.What subnet mask will provide the 100 subnetworks required, if 500 usable host addresses are required per subnet?（）

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What is the default administrative distance of OSPF?（）

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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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Which IPsec security protocol should be used when confidentiality is required?（）

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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?（）

題型：?jiǎn)雾?xiàng)選擇題

Which encapsulation type is a Frame Relay encapsulation type that is supported by Cisco routers?（）

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A router receives information about network 192.168.10.0/24 from multiple sources.What will the router consider the most reliable information about the path to that network?（）

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Which command encrypts all plaintext passwords?（）

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