Free Access Huawei.H12-831_V1.0.v2022-08-15.q121 Practice Test (Page 16)

Question 71

In addition to virtual connections, what type of IPv6 address is the source IPv6 address of OSPFv3's Hello text?

A.Global Unicast Address

B.IPv6anycast address

C.link-local address

D.unique local address

Question 72

IS-IS is a link-state routing protocol that uses the SPF algorithm for route calculation. As shown in the figure, a campus deploys both IPv4 and IPv6 and runs IS-IS to achieve network interconnection. R2 only supports IPv4. Which of the following statements is true about the topology calculation of this network?

A.By default, in the shortest path tree formed by IPv6 network calculation, the path from R1 to R4 is: R1-R2-R4. Since R2 does not support IPv6, R2 will directly discard IPv6 packets after receiving them, causing traffic loss.

B.By default, IPv4 and IPv6 networks will be calculated separately to form different shortest path trees

C.By default, since R2 does not support IPv6, in the shortest path tree formed by IPv6 network calculation, the path from R1 to R4 is: R1-R3-R4

D.If you want IPv4 and IPv6 network computation to form the same shortest path tree, you need to run the ipv6 enable topology ipv6 command to enable the IPv6 capability in the IS-IS process.

Question 73

In an operator's MPLSVPN network, there are two devices, PE1 and PE2, for MPLSVPN data forwarding. PE1 receives a 172.16.1.0/24 private network route from the client, and transforms it into a VPNv4 route on PE1 and assigns labels. Released to PE2 as 1027. The outgoing label of the MPLSLSR-ID from PE2 to PE1 is 1025.
When the client on PE2 accesses 172.16.1.0/24, the inner and outer labels of the frame sent by PE2 should be the combination of the following options?

A.Outer label: 1027, inner label: 1027

B.Outer label: 1027, inner label: 1025

C.Outer label: 1025, inner label: 1025

D.Outer label: 1025, inner label: 1027

Question 74

MPLS has the concept of FEC-Forwarding Equivalence Class, so on which of the following standards cannot FEC be allocated based?

A.Fragment of offiset

B.Application Protocol

C.Class of Service

D.Destination Addess

Question 75

By default, which of the following secure MAC address types will be lost after the device restarts?

A.Secure static MAC address

B.Black hole MAC address

C.Sticky MAC address

D.Secure dynamic MAC address

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