A network engineer is troubleshooting an RSVP-TE tunnel that is not being established. The head-end router is sending Path messages, but no Resv message is received. The engineer checks the intermediate routers and finds that one router is not sending a PathErr message either. Which condition could cause this behavior?

The tail-end router is not configured with the tunnel destination, so it does not send a Resv message

The intermediate router does not have RSVP-TE enabled on the incoming interface, so it silently drops the Path message

The intermediate router has a routing loop, so the Path message is forwarded back to the head-end

The intermediate router has insufficient bandwidth and sends a ResvErr message instead of a PathErr

Which IS-IS extension is used to advertise traffic engineering information such as link bandwidth and administrative group?

IS-IS sub-TLVs carried in the TLVs of an LSP

IS-IS PSNP packets with a TE option

IS-IS CSNP packets with a TE option

IS-IS hello packets with a dedicated TE flag

How are FRR backup tunnels typically established?

They are created dynamically only after a failure is detected

They are configured manually on every router in the network

They are pre-signaled and pre-computed before a failure occurs

A service provider is deploying MPLS TE Fast Reroute (FRR) to protect a critical TE tunnel. The network team wants to ensure that if a link fails, traffic is switched to a backup path in the fastest possible time. Which statement accurately describes how FRR achieves this fast failover?

FRR requires the backup tunnel to be signaled after the failure is detected

FRR relies on the head-end router to detect the failure and recompute a new path before traffic is switched

FRR pre-computes and pre-signals a backup tunnel, and the point of local repair (PLR) switches traffic to the backup tunnel immediately upon detecting the link failure

FRR uses IGP convergence to install a new label-switched path before the failure occurs

What is the role of OSPF Opaque LSAs in traffic engineering?

They enable OSPF to support IPv6

They provide a secure channel for OSPF authentication

They carry TE parameters such as bandwidth and administrative group

They replace the need for BGP in MPLS networks

CiscoCertified Network Professional Service Provider

Domain 3Objective 2

3.2 Describe Traffic Engineering 350-501 Practice Questions (Page 2)

Part of the MPLS and Segment Routing domain, which accounts for 20% of the 350-501 exam. Cisco does not publish an official question count, but from its 120-minute exam (~50–80 total, ~10–16 in this domain), expect 3–5 from this objective — we provide 23 practice questions to prepare you well beyond it. (estimate)

23questions here

5free pages

8concepts

20%of the exam

Questions 6–10

6expert · hard
A network engineer is troubleshooting an RSVP-TE tunnel that is not being established. The head-end router is sending Path messages, but no Resv message is received. The engineer checks the intermediate routers and finds that one router is not sending a PathErr message either. Which condition could cause this behavior?
Select an answer first
7foundation · easy
Which IS-IS extension is used to advertise traffic engineering information such as link bandwidth and administrative group?
Select an answer first
8foundation · easy
How are FRR backup tunnels typically established?
Select an answer first
9application · medium
A service provider is deploying MPLS TE Fast Reroute (FRR) to protect a critical TE tunnel. The network team wants to ensure that if a link fails, traffic is switched to a backup path in the fastest possible time. Which statement accurately describes how FRR achieves this fast failover?
Select an answer first
10foundation · easy
What is the role of OSPF Opaque LSAs in traffic engineering?
Select an answer first

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