What is the purpose of the sequence number in an IS-IS LSP?

To specify the metric for the LSP.

To identify the newest version of an LSP from a given originator.

To determine the age of the LSP.

What happens when an IS-IS LSP reaches a remaining lifetime of zero?

The LSP is immediately removed from the database and not flooded.

The LSP is ignored and kept in the database.

The LSP is flooded with a zero remaining lifetime to purge it from all databases.

The LSP is refreshed with a new sequence number.

A router in an IS-IS area is experiencing a temporary CPU spike that is causing it to fall behind on SPF calculations. The network administrator wants to prevent this router from being used as a transit path while still allowing it to advertise its directly connected prefixes. What should the administrator configure on the router?

Change the LSP sequence number to a higher value.

Increase the LSP refresh interval.

Disable CSNP generation on the router.

Set the overload bit in the router's LSPs.

A network engineer is troubleshooting a missing route in an IS-IS area. The engineer checks the LSP database on a router and finds that the LSP from the origin router has a sequence number of 0x0000000A and a remaining lifetime of 600 seconds. What does this indicate?

The LSP has been purged and the route is no longer valid.

The LSP is being ignored because the sequence number is too low.

The LSP is valid and the route should be present in the routing table.

The LSP is outdated and needs to be refreshed.

A network administrator is analyzing the LSP database on a router. The administrator wants to find the IP prefixes that a specific router is advertising. Which TLV in the LSP should the administrator examine?

The IP Interface Address TLV (TLV 132).

The Authentication TLV (TLV 10).

The Extended IP Reachability TLV (TLV 135).

Juniper NetworksCertified Specialist, Service Provider Routing and Switching (JNCIS-SP)

Domain 3Objective 1

Link-State Database JN0-364 Practice Questions (Page 2)

Part of the Intermediate System to Intermediate System (IS-IS) domain, which makes up ~12% of our current practice bank. Juniper Networks does not publish an official question count, but from its 90-minute exam (~35–60 total, ~4–7 in this domain), expect 1–1 from this objective — we provide 22 practice questions to prepare you well beyond it. (estimate)

22questions here

5free pages

6concepts

Questions 6–10

6foundation · easy
What is the purpose of the sequence number in an IS-IS LSP?
Select an answer first
7foundation · easy
What happens when an IS-IS LSP reaches a remaining lifetime of zero?
Select an answer first
8application · medium
A router in an IS-IS area is experiencing a temporary CPU spike that is causing it to fall behind on SPF calculations. The network administrator wants to prevent this router from being used as a transit path while still allowing it to advertise its directly connected prefixes. What should the administrator configure on the router?
Select an answer first
9application · medium
A network engineer is troubleshooting a missing route in an IS-IS area. The engineer checks the LSP database on a router and finds that the LSP from the origin router has a sequence number of 0x0000000A and a remaining lifetime of 600 seconds. What does this indicate?
Select an answer first
10application · medium
A network administrator is analyzing the LSP database on a router. The administrator wants to find the IP prefixes that a specific router is advertising. Which TLV in the LSP should the administrator examine?
Select an answer first

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