Online Access Free Huawei.H12-831_V1.0-ENU.v2022-08-02.q90 Practice Test (Page 17)

H12-831_V1.0-ENU Exam Question 76

When a fault occurs, the fault can be classified to reduce the scope of fault location. Which of the following is not an interface configuration fault?

A.The receiving and emitting power of both ends is inconsistent

B.Inconsistent interface authentication

C.IP address conflict

D.The duplex modes of the interfaces on both ends are inconsistent

H12-831_V1.0-ENU Exam Question 77

OSPFv2 is an IGP running on an IPv4 network; OSPFv3 is an IGP running on an IPv6 network. The basic working mechanism of OSPFv3 is the same as OSPFv2, such as the election of DR and BDR. As shown in the figure, an engineer uses three routers to test IPv6 services. He wants to realize the interconnection and interoperability of IPv6 networks by running OSPFv3.

Which of the following statements regarding the election of DR on this network is correct?

A.After the network converges, a new device R4 is added to the broadcast link, and the priority of R4 is 150. When the network converges again, R4 is the DR

B.After the network converges, R1 is powered off and restarted. When the network converges again, R3 is the DR

C.After the network converges, R1 is the DR

D.After the network converges, the engineer changes the priority of R1 to 100, the priority of R2 to 10, and the default value of R3. When the network converges again, R1 is DR and R2 is BDR

H12-831_V1.0-ENU Exam Question 78

The rollback operation of the project cutover can be determined temporarily according to the situation during the cutover, and no advance planning is required.

A.FALSE

B.TRUE

H12-831_V1.0-ENU Exam Question 79

Regarding BGP/MPLS IPVPN data forwarding, which of the following description is wrong?

A.The inner label during data forwarding is assigned by MP-BGP

B.The outer label during data forwarding can be allocated by LDP

C.The data sent by the PE to the CE is an IPv4 packet

D.When data is transmitted on the BCP/MPLS IP VPN backbone network, it always carries two layers of labels

H12-831_V1.0-ENU Exam Question 80

Regarding the description of the label encapsulation format in MPLS, which one is correct? (Multiple choice)

A.The total length of a single MPLS label is 4 bytes (32 bits)

B.The TTL field in the label is similar to the TTL (Time To Live) in the IP packet, and it also has the effect of preventing loops.

C.For Ethernet and PPP packets, the label stack is located between the layer 2 header and the data like the "underlay*": when there is a VLAN tag, the MPLS header is placed between the Ethernet header and the VLAN tag

D.The S field in the label: 1 bit, used to identify whether the label is a label at the bottom of the stack, when the value is 1, it is the penultimate layer label

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