A network engineer is troubleshooting LDP session establishment between two directly connected routers. The routers are sending LDP hello messages on the link, but the session is not coming up. The engineer checks the LDP neighbor table and sees the neighbor in 'Targeted' state. What is the most likely reason for the session not establishing?

The multicast hello is not being sent.

The hello hold time is set too low.

The transport address is not reachable between the routers.

The routers are using different LDP versions.

What is the purpose of extended LDP discovery?

To establish LDP sessions with non-directly connected peers using targeted hellos

To automatically configure LDP on all interfaces of a router

To replace the IGP for route advertisement

To discover all LDP routers in the autonomous system via multicast

How does Unified MPLS achieve end-to-end MPLS across multiple domains?

By using RSVP-TE exclusively for all label distribution

By using label stacking and BGP to distribute labels across domain boundaries

By requiring all domains to use the same IGP and LDP configuration

By converting all traffic to IP and re-encapsulating at each domain boundary

CiscoCertified Network Professional Service Provider

Domain 3Objective 1

3.1 Implement MPLS 350-501 Practice Questions (Page 4)

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 25 practice questions to prepare you well beyond it. (estimate)

25questions here

5free pages

8concepts

20%of the exam

Questions 16–20

16application · medium
A network engineer is troubleshooting LDP session establishment between two directly connected routers. The routers are sending LDP hello messages on the link, but the session is not coming up. The engineer checks the LDP neighbor table and sees the neighbor in 'Targeted' state. What is the most likely reason for the session not establishing?
Select an answer first
17foundation · easy
What is the purpose of extended LDP discovery?
Select an answer first
18foundation · easy
Which LDP neighbor state indicates that the session is fully operational and label exchange can occur?
Select an answer first
19application · medium
A service provider is running OSPF and LDP on a core network. An engineer is troubleshooting a scenario where a link fails and OSPF converges quickly, but LDP has not yet re-established the session. The engineer wants to prevent traffic loss during this window. Which mechanism should be enabled?
Select an answer first
20foundation · easy
How does Unified MPLS achieve end-to-end MPLS across multiple domains?
Select an answer first

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3.1 Implement MPLS 350-501 Practice Questions (Page 4)

Questions 16–20

What is the purpose of extended LDP discovery?

Which LDP neighbor state indicates that the session is fully operational and label exchange can occur?

A service provider is running OSPF and LDP on a core network. An engineer is troubleshooting a scenario where a link fails and OSPF converges quickly, but LDP has not yet re-established the session. The engineer wants to prevent traffic loss during this window. Which mechanism should be enabled?

How does Unified MPLS achieve end-to-end MPLS across multiple domains?

Keep studying — MPLS and Segment Routing