642-801 Building Scalable Cisco Internetworks (BSCI) Practice Exams


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642-801 Building Scalable Cisco Internetworks (BSCI)



Note 1: 642-801 Exhibit and all related diagrams are not shown in demo questions.
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Demo Question 2.


You are a guest lecturer at the EliteCertify Academy and are preparing a lesson on the Cisco IS-IS. Which of the following points can you include in your discussion of the Cisco IS-IS NSAP address System IDs? (Select three)

A. System IDs can vary in size within a domain.
B. The System ID identifies a node in an IS-IS network.
C. The System ID must be unique within a Level-1 area.
D. The System ID must be unique within a Level-2 area.
E. The System ID must be the MAC address of the router.


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Answer: B, C, D

Explanation: B. Each system ID within an area must be unique. It is used to identify a IS-IS node. C. All Level 1 routers and hosts in an area must have an NSAP with the same area address. D. Level 2 routers advertise their own area addresses (NSAP) to the other Level 2 routers in the backbone. Incorrect



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