module 7

Subject: module 7 Thu Nov 29, 2007 6:10 pm

CCNP 1
Chapter 7

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Which of the following are features of CLNP?

carries upper layer data and error indications over connectionless links
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Observe the diagram. The administrator requires the IS-IS adjacencies to authenticate so that no unauthorized routers will create adjacencies. Which command is required for an area to authenticate?

isis passwordpassword
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Which command enables IS-IS on a given interface?

ip router isis
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Which device in an IS-IS network is responsible for flooding link-state information on multi-access media?

the designated intermediate system
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Observe the above diagram. RTR-A performs a show clns neighbors and RTR-B does not appear in RTR-A's CLNS neighbor table. What is a possible reason?

The IS-IS circuit types are not the same.
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Which two features make IS-IS more scalable than OSPF? (Choose two.)

more routers can reside in a single area
fewer link-state PDUs are used
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In IS-IS routing, when is level 2 routing required?

when routing between level 1 areas in the same domain
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Given the above graphic, which configuration will ensure only a backbone connection adjacency between RTB and RTC?

RTC(config-if)# isis circuit-type level-2-only
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Which two commands must be issued to initially configure a network for IS-IS? (Choose two.)

net command
ip router isis
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What is the area number for the following IS-IS router configuration?

RouterA(config)# router isis
RouterA(config-router)# net 49.2385.A02C.025B.0001.00
49.2385
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Given the above output, which statement is true?

Rtr-B is a L1/L2 router.
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Which command is required in IS-IS to specify that a router will act only as a backbone router?

RTC(config-router)# is-type level-2-only
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Given the above output, which statement is true?

Fa0/0 is configured to establish a level-1 or level-2 adjacency.
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What is specified by Level 3 routing?

routing between separate domains
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Which of the following statements is true for IS-IS systems?
All ESs and Level 1 ISs must have a unique system ID area wide.
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In IS-IS routing, which level is used to route between end systems and intermediate systems within the same area?

level 0
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In IS-IS routing, which of the following items describe the network service access point? (Choose two.)

the location at which OSI network services are provided to the transport layer
a conceptual point on the boundary between the network and transport layers
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What is used to elect the designated intermediate system if all interface priorities are the same on a Frame Relay network?

highest local DLCI
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Observe the diagram. The IS-IS routers are not exchanging updates. What is a possible reason?

The routers are not in the same area.
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Which of the following does IS-IS use to calculate the best path to a given destination?

the Dijkstra algorithm
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