During an IS-IS adjacency formation, a router receives a Hello PDU (IIH) that contains TLV 6 (IP Interface Address) with the address 192.168.1.1. What is the purpose of this TLV in the IIH?

To inform the neighbor of the interface IP address used for the adjacency.

To specify the metric for the adjacency.

To list all IP routes reachable through this interface.

To advertise the router's area address to the neighbor.

Which IS-IS PDU type uses TLVs to carry routing information?

Sequence Number PDUs (SNPs) only

A network engineer is analyzing a packet capture of an IS-IS LSP and notices a TLV with Type=22 and Length=0. The engineer is concerned that this TLV might cause parsing issues. What is the most accurate statement about this TLV?

The TLV is malformed and will cause the router to discard the entire LSP.

The TLV is valid but carries no information, so the router will ignore it.

The TLV will cause the parser to read beyond the PDU boundary.

The TLV is invalid because TLV 22 must always have a non-zero length.

A network engineer is configuring a new IS-IS router and wants to advertise the IPv4 addresses of all interfaces into the IS-IS domain. Which TLV is used in the Link State PDU (LSP) to carry this information?

TLV 22 (Extended IS Reachability)

Juniper NetworksCertified Specialist, Enterprise Routing and Switching (JNCIS-ENT)

Domain 6Objective 3

Type, Length, and Values JN0-352 Practice Questions (Page 1)

Part of the IS-IS domain, which makes up ~15% of our current practice bank. Juniper Networks does not publish an official question count, but from its 90-minute exam (~35–60 total, ~5–9 in this domain), expect 1–1 from this objective — we provide 20 practice questions to prepare you well beyond it. (estimate)

20questions here

4free pages

4concepts

Questions 1–5

1application · easy
During an IS-IS adjacency formation, a router receives a Hello PDU (IIH) that contains TLV 6 (IP Interface Address) with the address 192.168.1.1. What is the purpose of this TLV in the IIH?
Select an answer first
2foundation · easy
Which IS-IS PDU type uses TLVs to carry routing information?
Select an answer first
3expert · medium
A network engineer is designing a new IS-IS feature that requires carrying a list of 32-bit integers in an LSP. The engineer decides to use a new TLV type. What is the maximum number of 32-bit integers that can be carried in a single TLV if the Length field is 1 byte?
Select an answer first
4expert · medium
A network engineer is analyzing a packet capture of an IS-IS LSP and notices a TLV with Type=22 and Length=0. The engineer is concerned that this TLV might cause parsing issues. What is the most accurate statement about this TLV?
Select an answer first
5application · easy
A network engineer is configuring a new IS-IS router and wants to advertise the IPv4 addresses of all interfaces into the IS-IS domain. Which TLV is used in the Link State PDU (LSP) to carry this information?
Select an answer first

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