Free Access Huawei.H12-831_V1.0-ENU.v2022-01-20.q92 Practice Test (Page 13)

Question 56

If the temperature of the device is found to be too high, it can be concluded that the fan has failed

A.TRUE

B.FALSE

Question 57

Regarding sham link, which of the following description is wrong?

A.In order to forward the VPN flow through the MPLS backbone network, the routing cost of the sham link should be less than the OSPF routing cost of the backdoor road

B.The sham link is a link between two VPN instances. Each VPN instance must have an endpoint address of the sham link, which must be a Loopback with a 32-bit mask in the VPN address space on the PE router. interface address

C.The endpoint address of the sham link is advertised as a VPhv4 address by BGP. Routes that have passed sam1ik can also be imported into BGP in the form of VPNv4 routes

D.The sham link can be configured in any area and needs to be configured manually, and there must be a route to the sham link destination address (the sham link endpoint address of the peer PE) in the local VPN instance

Question 58

According to this picture, what can we judge? (Multiple choice)

A.The device with system-ID ee8a0c2.baf2, its type is Leve1-1

B.R4 belongs to Level-1 only

C.The device whose system-ID is ee8c. a0c2.baf2, and its type is Level-1-2

D.R4 belongs to Leve1-2 only

Question 59

A certain park deployed both IPv4 and IPv6 networks for service testing, and IS-IS was run to achieve network interconnection. IS-IS routing protocol has good scalability and is widely used in existing networks.
Regarding IS-IS scalability, which of the following statements are correct? (Multiple choice)

A.IS-IS uses TLV structure to construct messages, which makes IS-IS more flexible and expandable

B.IS-IS needs to add TLV to carry Pv6 address information in order to support PV6

C.NLPID is a new TLV of IS-IS to support IPv6

D.For IS-IS, adding new features only needs to add a new TLV

Question 60

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.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

D.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

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Question 56

Question 57

Question 58

Question 59

Question 60

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