QUESTION: 21

Interface Ethernet 3/1/0 is configured as follows:

Ethernet 3/1/0 receives multicast group 232 0.0.31 IGMFV2 Report messages, If no multicast traffic sent to group 232.0.31 can be detected on Ethernet 3/1/0, which of the following causes may be true?

The TTL value is less than 20 in data messages sent to group 232.0.0.31.
Ethernet 3/1/0 does not function as a PIM DR
The multicast border of group 232 0.0.31 is configured on Ethernet 3/1/0.
SSM mapping is not configured for group 232 0 0 31.

Answer(s): B

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QUESTION: 22

Which of the following statements about BFD for MPLS LSP are true?

An MPLS LSP may be unidirectional .If BFD packets are transmitted along an MPLS LSP in the forward direction., these packets may be forwarded over IP in the reverse direction. Then the forwardand reverse paths of a packet may be different As a result, when a fault occurs on the reverse path, BFD detects and reports the fault even if the MPLS LSP is normal.
In BFD for MPLS LSP, LSP Ping is used to negotiate the identifier and parameters of a BFD session.
BFD for MPLS LSP detects faults only on the forwarding plane. LSP Ping, however, can not only detect faults on the forwarding plane, but also find out inconsistencies between the forwarding plane and the control plain- Therefore, they are often combined for a better fault detection solution.
If MPLS LSPs work in load balancing mode, a BFP session should be triggered on each LSP in
principle. Only one BFD session. however, can be initialed for load-balancing MPLS LSPs to an intermediate node In this case, the forwarding path ol BFD packets may be different from what expected. As a resultmay be reported or missed.

Answer(s): A

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QUESTION: 23

In MPLS QoS , traffic policies are developed on simple traffic classified and complex traffic classification policies based on simple traffic classification the service class color, and drop priority of packet are reset based on the packet in the traffic policies on complex traffic classification measures such as traffic classification is applied on border routers in Different domain, and traffic classification core routers. QoS policies are configured by performing the following operations:

Defines DiffSer domain and configuring a traffic policy.
Classification traffic

Defines traffic behavior and configures characteristics ofbehaviors.

Defines a traffic policy and specifies for trafficcategories

Applies the traffic policy

Configure L-LSP

Configures reserve address checks

Adds interface to the DiffSer domain

Which of theproceedingoperations are required when you configured simple traffic classification?

1 6 8
2 3 4 8
1 5 6
2 4 5 7

Answer(s): B

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QUESTION: 24

Which of the following statements about the VPLS packet forwarding are true?

If a PE receives broadcast packets from a local user, the PE forwards the packets to all other interfaces In the same VSI and all other PEs.
If the destination MAC address of a packet is not a broadcast address and a PE has not learned the MAC address, the broadcast this packet in one VSI
If the destination MAC address of a packets is not a broadcast address and a PE has not learned the MAC address, the PE broadcast this packet in on VSI.
If a receive broadcast packet sent a remote PE, it forwards the packet only to the AC interface instead of other PEs.

Answer(s): B

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