多項選擇題Which three are benefits of IS - IS over OSPF?()

A. supports route tags
B. supports more routers in an area
C. does not require Hello packets to establish neighbor relationships
D. produces fewer link state advertisements for a given network
E. supports network layer protocols other than IP
F. requires fewer neighbor relationships in a broadcast multiaccess network


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1.多項選擇題Which two are characteristics of the IS -IS protocol but not OSPF?()

A. forms adjacencies with all neighbors
B. supports demand circuit routing
C. provides routing support for multiple network layer protocols
D. utilizes SPF algorithm
E. provides for network scalability by allowing the network to be separated into areas
F. three layers of hierarchical routing

2.單項選擇題How is network layer addressing accomplished in the OSI protocol suite?()

A. Internet Protocol address
B. Media Access Control address
C. Packet Layer Proto col address
D. Network Service Access Point address
E. Authority and Format Identifier address

3.單項選擇題What is  the default metric used on IS -IS routers for each interface?()

A. The cost is set to 10 for all interfaces.
B. The cost is set to 10 for LAN interfaces and 20 for WAN interfaces.
C. The cost is based on the speed of the interface.
D. The cost is based o n a composite of bandwidth and delay of the interface.

4.單項選擇題Which packet type is used to ackno wledge LSPs on point - to - point links and to request missing pieces of information in the IS - IS link -state database?()

A. complete SNP (CSNP)
B. partial SNP (PSNP)
C. hello
D. database query
E. database description packet (DDP)

5.單項選擇題What is periodically sent by a DIS on a LAN to ensure that all adjacent neighbors' IS - IS link - state databases are synchronized?()

A. complete SNP (CSNP)
B. partial SNP (PSNP)
C. database query
D. database description packet (DDP)
E. link - state summary
F. hello

6.單項選擇題What are the basic configuration steps to enable IS - IS?()

A. Configure the net system - id command under routerisis and enable IS - IS on each interface with the ip router isis command.
B. Configure the net sy stem - id and the network net - id commands under routerisis.
C. Configure the network net - id command(s) under routerisis and enable IS - IS on each interface with the ip router isis command.
D. Configure the network net - id command(s) and the is - type level -1- 2 command under routerisis.
E. Configure the net system - id and the network net - id commands under routerisis and enable ISIS on each interface with the ip router isis command.

7.單項選擇題In reference to the P1R3 show isis route output, which statement is true? ()

A. P1R1 is the exi t point out of the area for P1R3.
B. P1R1 is a level - 1 only IS - IS router.
C. P1R1 has been configured with a nondefault IS - IS metric.
D. P1R3 is a level - 2 only IS - IS router.
E. P1R3has been configured with a nondefault IS - IS metric.
F. P1R3 routing ta ble should contain i L2 entries.

8.單項選擇題

What will happen after redistributing other routing protocol routes into OSPF? ()

A. miss the metric option in the redistribute command.
B. misconfigure the metric- type option in t he redistribute command to type - 1.
C. miss the subnet option in the redistribute command.
D. miss the tag option in the redistribute command.

9.單項選擇題

Based on the show ip route isis output on R1, which statement is true? ()

A. The i su 10.1.0.0/23 route is a suppressed route.
B. The i su 10.1. 0.0/23 route is a summary route.
C. The i su 10.1.0.0/23 route is an IS - IS external route.
D. The R1 IS - IS router is an ASBR.
E. The R1 IS - IS router is an ABR that belongs to multiple IS - IS areas.
F. The R1 IS - IS router is performing route aggregation  and is suppressing the more specific 10.1.0.0/23 prefix.

10.單項選擇題

Given the network diagram, which routers currently make up the IS - IS  backbone?()

A. R3,R4,R6
B. R2,R3,R6,R7
C. R1 through R8
D. R3,R4,R5,R6
E. R2,R3,R4,R6,R7

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