Free Access Huawei.H31-161.v2022-05-30.q78 Practice Test (Page 5)

Question 16

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?

A.SSM mapping is not configured for group 232 0 0 31.

B.Ethernet 3/1/0 does not function as a PIM DR

C.The TTL value is less than 20 in data messages sent to group 232.0.0.31.

D.The multicast border of group 232 0.0.31 is configured on Ethernet 3/1/0.

Question 17

Which statement describes the packet loss ratio requirement of the voice service for the IP bearer network?

A.Allowed maximum packet loss =1%

B.No strict requirement

C.Allowed maximum packet loss =10-6

D.Allowed maximum packet loss =1%

Question 18

Exhibit.

As shown in the figure, one enterprise has VPN A, the other has VPN B, and the two VPNs each have two
CEs. The following requirements needs to be met.
VPNA-CA 1 can interwork with VPNA-CE 2
2>VPNA-CE 1 can interwork with VPNA-CE 2.
The figure shows the types of links between CEs and PEs and the IDs used in Martini mode. Which the
following VC ID configurations are correct?

A.VCID1 =1, VCID2 = 2, VCID3 =1, VCID4 +2

B.VCID1 =1, VCID2 = 2, VCID3 =3, VCID4 +4

C.VCID1 =2, VCID2 = 2, VCID3 =2, VCID4 +2

D.VCID1 =1, VCID2 = 1, VCID3 =2, VCID4 +2

Question 19

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

A.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 forward and 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.

B.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.

C.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 result may be reported or missed.

D.In BFD for MPLS LSP, LSP Ping is used to negotiate the identifier and parameters of a BFD session.

Question 20

As shown in the figure , CE and CE 2 belong to VPN A, CE 3 and CE 4 belong to VPN B, VPN A and VPN B
share the public network tunnels between border PE 1 and PE 2, and LDP tunnels are configured between PE
1 and PE 2. To isolate resources for VPN service data from PE 2 to PE 1, a unidirectional TE tunnel is
configured t forward data from PE1. The QoS policy propagation though the border gateway protocol (QPPB)
feature is configured on PE 2, and a QoS policy is defined when VPNs are bound to tunnel interfaces.