4A0-C01 Online Practice Questions and Answers

What are the three databases maintained by a Link State Protocol?

A. Neighbor, adjacency, route table

B. Neighbor, topology, forwarding

C. Topology, routing, forwarding

D. There are only two databases: adjacency and topology

From the list below identify two matching criteria supported for IP filters on the Alcatel- Lucent 7750 SR: (Choose two)

A. DSCP marking

B. Class of Service Marking

C. DSAP marking

D. ICMP type

Click on the exhibit button below.

Routers R1 and R4 are in Area 1. Routers R4 and R5 in Area 0. Routers R5 and R3 are in Area 2.

Consider the following:

To support LDP-over-RSVP tunnels between routers R1 and R3 over path R1-R4-R5-R3, with which routers will router R5 require targeted sessions? (Choose two)

A. Router R1

B. Router R4

C. Router R2

D. Router R3

Click on the exhibit.

Before the link failure, all routers have operational OSPF adjacencies between them and there is a BFD session between routers R1 and R3.

After the link failure, which of the following affects the IGP convergence time?

A. The convergence time depends on the value of the OSPF hello timers on routers R1 andR3.

B. The convergence time depends on the value of the OSPF hello timers and Dead interval on routers R1 and R3.

C. The convergence time depends on the value of the BFD interval and multiplier settings on routers R1 andR3.

D. The convergence time depends on the time taken by the switches to detect the link failure.

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

Fill in the blanks: A ________device has all interfaces inside the provider domain, and a _______ device has at least one interface outside the provider domain.

A. PE, P

B. P, PE

C. PE, CE

D. CE, PE

E. CE, P

Which of the following about T-LDP on the Alcatel-Lucent 7750 SR is FALSE?

A. T-LDP is used to provide an end-to-end session between two PE routers.

B. T-LDP is used to signal service labels for Layer 2 services.

C. T-LDP is used to establish transport tunnels for Layer 2 services.

D. T-LDP is used in LDP over RSVP solution.

How many service labels must be signaled to bring up a fully meshed VPLS service among four PE routers?

A. 1

B. 4

C. 6

D. 8

E. 12

F. 24

Which of the following is NOT a benefit of "Hub and Spoke'' VPLS deployments?

A. They reduce the number of SDPs that need to be configured.

B. They can be used to work around physical topologies that prevent a fully meshed deployment.

C. They prevent loops that can be introduced by mesh deployments.

D. They can simplify the implementation of security policy enforcement and packet inspection.

Click the exhibit.

Routes are exchanged between CE1 and PE1 using BGP. CE2 and PE2 use static routes to forward traffic to and from the VPRN. Which of the following is FALSE?

A. An export policy is required on PE1 to advertise routes to CE1.

B. An export policy is required on CE1 to advertise local routes to PEL

C. An export policy is required to advertise routes between the PE routers.

D. No export policy is required on PE2 or CE2 due to the static routes.