Alcatel-Lucent Multicast Protocols - 4A0-108 FREE EXAM DUMPS QUESTIONS & ANSWERS]

Question 1

Refer to the following exhibit.

Assume all links have an equal metric in the IGP. Receiver 2 has joined the multicast group and the source is sending. As a result of Router F switching to the Source Path Tree, what message will be generated by Router D in the direction of Router E?

A. PIM(*, G)Join B. PIM (*, G)RP-bit prune C. IGMP(*, G)Join D. PIM (S, G)RP-bit prune E. PIM Hello

Discussion 0

Correct Answer: D Vote an answer

Question 2

Click the exhibit.

Based on the display, which of the following regarding MVPN 100 is TRUE?

A. BGP is used to signal customer multicast routing information and discover PEs. B. PIM is used to signal customer multicast routing information and discover PEs. C. BGP is used to signal customer multicast routing information, while PIM is used to discover PEs. D. PIM is used to signal customer multicast routing information, while BGP is used to discover PEs.

Discussion 0

Correct Answer: A Vote an answer

Question 3

Which of the following commands will verify, either directly or indirectly, if PIM is configured on an interface on the Alcatel-Lucent 7750 SR? (Choose two)

A. show router interface detail B. show router pim status detail C. show router pim status D. show router pim interface

Discussion 0

Correct Answer: A,D Vote an answer

Question 4

An Alcatel-Lucent 7750 SR is unable to locate a multicast source address in the multicast forwarding table. However, the source address is available in the unicast forwarding table.
Which statement best describes the default RPF check behavior of the 7750 SR?

A. The RPF check will fail as PIM relies exclusively on the multicast forwarding table by default B. The RPF check will not fail, as by default PIM uses the multicast forwarding table first for RPF check, if not found in the multicast forwarding table then refers to unicast forwarding table C. Not enough information is provided to answer the question D. The RPF check will fail as the RPF check requires that the source address be present in both the unicast and multicast forwarding table E. The RPF check will not fail as PIM uses only the unicast forwarding table by default

Discussion 0

Correct Answer: E Vote an answer

Question 5

Which of the following conditions triggers the S-PMSI construction in Draft Rosen?

A. If the number of interested receivers exceeds the threshold set on the egress PE, the SPMSI is constructed. B. If multicast data exceeds the threshold set on the egress PE, the S-PMSI is constructed. C. If multicast data exceeds the threshold set on the ingress PE, the S-PMSI is constructed. D. If the number of interested receivers exceeds the threshold set on the ingress PE, the SPMSI is constructed.

Discussion 0

Correct Answer: C Vote an answer

Question 6

Click the exhibit.

The interface's IGP metric is as shown, and PIM is using the unicast table for the RPF-check. What happens when Router B receives a register message on its interface facing Router A?

A. Router B forwards the register message out of all the interfaces in its (',239.1.1.1) entry's outgoing interface list. B. Router B discards the register message, as the RPF-check fails. C. Router B forwards the register message out of all the interfaces in its (192.168.1.1,239.1.1.1) entry's outgoing interface list. D. Router B forwards the register message to Router D (RP) according to its routing table.

Discussion 0

Correct Answer: D Vote an answer

Question 7

Refer to the exhibit.

Which router is this screen capture taken from?

A. Only from the Candidate-RP B. Only from the elected BSR C. Only from the Candidate-BSR D. Any router in the PIM multicast domain

Discussion 0

Correct Answer: D Vote an answer

Question 8

How many types of Auto-Discovery routes are defined for MCAST-VPN NLRI?

A. 3 B. 7 C. 9 D. 5

Discussion 0

Correct Answer: B Vote an answer

Question 9

Which one of the following services is provided by the use of PIM as a multicast routing protocol?

A. Preventing Denial of Service attacks B. Device Security C. Preventing packet forwarding loops D. Guaranteed Delivery E. Authentication

Discussion 0

Correct Answer: C Vote an answer

Question 10

What does the term 'incongruent unicast and multicast routing' refer to? (Choose the best answer)

A. This refers to having different routing policies or routing topologies for unicast and multicast networks B. This is another term for asymmetric routing C. This refers to the case when the base routing table imports routes from two different protocols D. This refers to the case when unicast and multicast routing tables contain the same route entries

Discussion 0

Correct Answer: A Vote an answer

Question 11

Click the exhibit. Based on the output displayed, which of the following is FALSE?

A. Fast-reroute one-to-one is enabled in this P2MP LSP-template. B. Router 1.1.1.1 is a PE participating in VPRN 100. C. This P2MP LSP is established for VPRN 100. D. Router 1.1.1.3 is a PE participating in VPRN 100.

Discussion 0

Correct Answer: A Vote an answer

Question 12

How does IGMP snooping eliminate multicast flooding on the LAN?

A. The switch inspects IGMP messages between receivers and routers and populates the forwarding table with active multicast group addresses B. The switch inspects all multicast traffic between receivers and routers and populates the forwarding table with active multicast group addresses C. The switch acts as an IGMP proxy for the receiver D. The switch populates multicast source addresses into the forwarding table

Discussion 0

Correct Answer: A Vote an answer