Huawei Huawei Certifications H12-891 Questions & Answers

• Question 211:

  The following about the Router-LSA of OSPFv3 is correct?( Single choice questions).

  A. The router-LSA data area contains the Link-Local address

  B. The router-LSA data area contains the Interface ID of the neighbor on this side

  C. Similar to OSPFv2, the Option field exists in the header of LSA, not in the data area of Router-LSA

  D. When LS type= Ox0001 in the head of LSA, the data area representing LSA is Router- LSA

  Correct Answer: B

• Question 212:

  Command IP as-path-filter1 permit^12,*74$ can match to which AS_PSTH?

  A. AS_PATH(321122374)

  B. AS PATH Q236217 ? 2374)

  C. AS_PATH(125 328 74 23)

  D. AS_PATH(32127423)

  Correct Answer: B

• Question 213:

  As shown in the figure, which of the following options satisfies two routers to establish an ISIS neighbor? ( Single choice questions).

  

  A. Both routers are of The Level-1 type.

  B. Both routers remain of the default type.

  C. One of the two routers can be of the Level-1-2 type and the other of the Leve1-1 type.

  D. The ISIS process numbers of the two routers must be consistent.

  Correct Answer: B

• Question 214:

  The correct description about the BGP reflector is ?( Multiple choice questions).

  A. IBGP neighbor relationships need to be fully interconnected without a route reflector. The introduction of route reflectors can reduce the need for full interconnection

  B. The route reflector can advertise routes learned from non-clients to all clients

  C. The route reflector can advertise routes learned from one client to other clients and non- clients

  D. The route reflector can advertise routes learned from IBGP neighbors to all clients and non-client

  Correct Answer: ABC

• Question 215:

  What is the significance of reserved multicast address 224000~22400255?

  A. The multicast address range is reserved for the management of multicast addresses, and is valid locally

  B. The address identifies Global lnternet, and the address range is valid for the entire network

  C. This multicast address range is reserved for the management of multicast addresses, which cannot transmit multicast traffic to the Internet

  D. Any legitimate multicast traffic and multicast application Junhui adopts an address change

  E. The multicast address range is reserved for link-local multicast traffic, including network control messages, and the address range is only valid locally

  Correct Answer: E

• Question 216:

  The following description of the BGP route reflector is ?( Multiple choice questions).

  A. Cluster_List is an optional non-staging property for ring protection within the cluster.

  B. The route learned from the client, all non-clients and clients published to this RR.

  C. A network of bones is divided into multiple reflection clusters, each of which configures the other RRs as non-clients, and establishes an IBGP full connection between the RRs.

  D. The Originator_ID attribute is generated by the Route Reflector (RR) for inter-cluster ring protection.

  Correct Answer: BC

• Question 217:

  In an intra-domain MPLSVPN network, when a packet enters the public network and is forwarded, it is encapsulated with two layers of MPLS tags, and the description of the two layers of tags in the following options is incorrect

  A. The outer label of mpls VPN is assigned by the LDP protocol or statically, and the inner label is assigned by the MP-BGP neighbor of the peer

  B. The outer label of MPLS VPN is called a private network label, and the inner label is called a public network label

  C. The outer label is used to correctly send packets to the appropriate VPN in

  D. on the PE device By default, the outer label is ejected before the packet is forwarded to the last hop device

  Correct Answer: BC

• Question 218:

  The following statement about IPv6 Over VXLAN is wrong as ?( Single choice questions).

  A. The tunnel between VXLAN Layer 2 and Layer 3 gateways is an IPv4 network.

  B. IPv6 over VXLAN solves the problem of insufficient IP address resources for end tenants.

  C. IPv6 Over VLANs do not generate ND table entries.

  D. IPv6 over VXLAN means that the Overlay network of the VXLAN is an IPv6 network.

  Correct Answer: C

• Question 219:

  BGP EVPN Type2 routes are used to pass IRB type routes with information including ?( Multi-select)

  A. Layer 2 VNI

  B. Host IP address

  C. Host MAC address

  D. Three layers of VNI

  Correct Answer: ABC

• Question 220:

  Which of the following routing tools is unique to BGP?

  A. Route-policy

  B. ACL

  C. IP-prefix

  D. AS-path-filter

  Correct Answer: D