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In MPLS, at which device are packets assigned to a FEC?

A.

LSR

B.

LER

C.

eLER

D.

iLER

E.

CE

Which of the following best describes constraint-based routing?

A.

A mechanism that implements opaque LSAs.

B.

A mechanism that computes routes based on defined user requirements.

C.

A mechanism that allows the IGP shortest path to be used.

D.

A mechanism that allows RSVP or LDP signaling to use a route other than the IGP best route to establish a LSP.

Click on the exhibit button below:

Consider the following:

- Router R2 is an ABR in OSPF Areas 0 and 1.

- Router R2 advertises the aggregate prefix 10.10.10.0/24 into Area 1.

- Router R1 in Area 0 generates LDP labels for FECs 10.10.102/31 and 10.10.10.4/31

Router R3 in Area 1 places these FECs in its LIB, but it does not place them in its LFIB. What can you do on router R3 to make it populate these labels in its LFIB?

A.

Disable route summarization on router R3

B.

Enable LDP aggregate prefix match

C.

Create an import policy to accept these FECs

D.

Disable LDP exact match on the specified FECs

Which of the following are the default settings for the Alcatel-Lucent 7750 SR when using LDP?

A.

Ordered control mode; downstream on demand.

B.

Ordered control mode; downstream unsolicited.

C.

Independent control mode; downstream on demand.

D.

Independent control mode; downstream unsolicited.

Which approach to LSP path diversity provides the most control, but the least flexibility?

A.

Administrative Groups

B.

Shared Risk Link Groups

C.

Strict hop LSP paths

D.

Fast reroute

Which of the following reservation styles can be used to prevent both the primary and secondary paths from booking resources on a common link?

A.

Fixed filter

B.

Shared explicit

C.

Standby explicit LSP

D.

Preemptive filter

E.

Link capacity filter

Click on the exhibit button below.

If the four LSPs shown use the shared-explicit reservation style, how much bandwidth does CSPF request across a single 1Gbps link?

A.

100Mbps

B.

200Mbps

C.

300Mpbs

D.

600Mbps

E.

700Mbps

Click on the exhibit button below.

Given the output below, which of the following statements are true? (Choose three)

A.

A packet arriving with label 131066 and destined for prefix 10.10.10.243/32 will be forwarded out interface 1/1/4, with label 131070.

B.

LDP ECMP is enabled.

C.

The router’s system address is 10.10.10.242/32.

D.

There are multiple LSPs to reach FEC 10.10.10.244/32.

E.

The router cannot receive any unlabeled packets destined for prefix 10.10.10 223/32.

Which of the following are characteristics of an LSP? (Choose two)

A.

It is unidirectional.

B.

It is bidirectional.

C.

It must always have a secondary path.

D.

It provides a specific tunnel for a FEC through the network.

E.

It always follows the IGP best path.

Assume that, on the Alcatel-Lucent 7750 SR, an LSP is configured with one-to-one FRR and node protection. Which of the following statements are FALSE? (Choose two)

A.

Each PLR signals a detour LSP that avoids the downstream node. If the downstream node cannot be avoided, a detour LSP that avoids the downstream link is signaled.

B.

The detour LSP can take one or more hops before merging back on the protected LSP.

C.

The merge point of the protected LSP must be the next-next-hop node

D.

The ingress router will set the local protection desired flag in the session attribute object of the path message to inform all routers along the protected LSP path to establish detour LSPs.

E.

The label recording desired flag must be set in the session attribute object in order for the PLR to know what label to swap when using the detour LSP.