A network engineer is configuring LDP on a router. The engineer wants to ensure that the router advertises its label bindings to all directly connected LDP peers. Which configuration step is necessary?

Set the LDP label advertisement mode to downstream-on-demand.

Configure a static route to each peer.

Enable LDP on the interfaces that connect to the peers.

Configure a loopback address for the LDP router ID.

Which protocol is commonly used to advertise label bindings in an MPLS network?

LDP (Label Distribution Protocol)

OSPF (Open Shortest Path First)

What is a primary benefit of penultimate hop popping (PHP) in MPLS?

It reduces the processing burden on the egress LSR.

It eliminates the need for label distribution protocols.

It increases the label stack depth for better scalability.

It improves the security of MPLS networks.

An MPLS router receives a labeled packet. The router examines the label and determines that it must replace the incoming label with a new outgoing label and forward the packet to the next hop. Which table does the router use to make this forwarding decision?

The Label Information Base (LIB)

The Label Forwarding Information Base (LFIB)

A transit router in an MPLS network receives a labeled packet. The router looks up the incoming label in its LFIB and finds an entry that specifies a swap operation. What does the router do with the packet?

It replaces the incoming label with the outgoing label and forwards the packet to the next hop.

It adds an additional label to the packet.

It removes the label and forwards the packet as an IP packet.

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

Domain 7Objective 4

Labels and the Label Information Base JN0-364 Practice Questions (Page 3)

Part of the Multiprotocol Label Switching (MPLS) domain, which makes up ~16% of our current practice bank. Juniper Networks does not publish an official question count, but from its 90-minute exam (~35–60 total, ~6–10 in this domain), expect 1–1 from this objective — we provide 19 practice questions to prepare you well beyond it. (estimate)

19questions here

4free pages

6concepts

Questions 11–15

11application · medium
A network engineer is configuring LDP on a router. The engineer wants to ensure that the router advertises its label bindings to all directly connected LDP peers. Which configuration step is necessary?
Select an answer first
12foundation · easy
Which protocol is commonly used to advertise label bindings in an MPLS network?
Select an answer first
13foundation · easy
What is a primary benefit of penultimate hop popping (PHP) in MPLS?
Select an answer first
14application · medium
An MPLS router receives a labeled packet. The router examines the label and determines that it must replace the incoming label with a new outgoing label and forward the packet to the next hop. Which table does the router use to make this forwarding decision?
Select an answer first
15expert · easy
A transit router in an MPLS network receives a labeled packet. The router looks up the incoming label in its LFIB and finds an entry that specifies a swap operation. What does the router do with the packet?
Select an answer first

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