Huawei Huawei Certifications H12-891 Questions & Answers

• Question 71:

  Router A has an IP route entry with a purposeful CIDR block of 10001/32 and an outgoing interface of GigabitEthernetO/0/1. Now add the following configuration: acd number 2000 rule 10 permit source1001.10#traffic classifier test if-match acl 2000 # traffic behavior test remarkdscp cs3#traffic policy test classifier test behavior test# interfaceGigabitftherneto/0/1 ip address 1001212552552550 traffic-policy test outbound#assuming router A received a destination IP of 10001 Of packets, the following statements are correct:

  A. If the data packet source lIP address is 1001.2, it can be forwarded with the DSCP field marked CS3

  B. If the packet source IP address is 1001.1, it can be forwarded while the DSCP field is marked as CS3

  C. If the packet source IP address is 1001.2, it cannot be forwarded

  D. If the packet source IP address is 1001.2, it can be forwarded while the DSCP field remains unchanged

  Correct Answer: BD

• Question 72:

  Regarding BGP route filtering, the following description is wrong?

  A. The filtering relationship between Route-Policy's noodes is "or." ", that is, as long as a node filter is passed, it can pass through the Route-policyo

  B. For routes published locally, configure a routing policy that takes effect before the route is added to the BGP route table.

  C. In the same node of Route-Policy, multiple if-match clauses for different attributes are "or" relationships.

  D. When a route to a BGP peer is received, a routing policy is enforced to filter unwanted BGP routes that are not added to the local BGP routing table.

  Correct Answer: C

• Question 73:

  Comparisons for primary switch elections in the stack include ?

  A. MAC address

  B. Health status

  C. Stack priority

  D. Stack ID

  Correct Answer: ABC

• Question 74:

  The following description of the LDPLSP establishment process is correct?

  A. By default, LSRs are for the same FEC, and the received tag mappings can only come from the optimal next hop, not from the non-optimal next hop.

  B. When a network topology change causes the next hop neighbor to change, the free label keep method is used. LSR can quickly rebuild the LSP by directly using the labels sent by the original non-optimal next-hop neighbor. Liberal needs more memory and tag space.

  C. In the DoD mode of label publishing, for a specific FEC, the LSR does not need to obtain a label request message from upstream to distribute the label.

  D. The process of establishing a D. LSP is actually to bind the FEC to the tag and advertise this binding to the LSP upstream LSR process.

  Correct Answer: BD

• Question 75:

  If you have a Huawei switch running the STP protocol, and now connect the GO/O/17 interface and the GO/O/18 interface of the switch through a cable, then the scenario described below is correct ?( Single choice questions).

  A. Both the G0/0/17 interface and the GO/0/18 interface enter the Forwarding state

  B. Both the Go/0/17 interface and the G0/0/18 interface enter the Disccarding state

  C. The Go/0/17 interface enters the Blocking state

  D. The GO/0/18 interface will continuously change back and forth between the Listening state and the Learning state

  E. GO/0/18 interface will enter the Disking state

  Correct Answer: E

• Question 76:

  In an HWIP multicast network, where multiple sources exist and each source has several receivers, which protocol allows source-to-RP traffic and RP-to-receiver traffic to share the same tree 2?

  A. MOSPF

  B. PIM SM

  C. DVMRP

  D. 56768GZliuji

  E. PIM-DM

  Correct Answer: D

• Question 77:

  As shown in the figure, three switches SI, SN2, and SN3, where SN1 is the root bridge between S1 and SN2 Now that link support SN2 cannot receive the configuration BPDU sent by the root car, the administrator needs to configure which spanning tree protection mechanism to prevent the problem of link congestion?

  

  A. root protection

  B. Anti-TC-BPDU attack

  C. BPD protection

  D. Loop protection

  Correct Answer: D

• Question 78:

  The existing router HWl running BGP is configured with both IBGP neighbors and EBGP tenants. The following descriptions about IBGP Neighbors and EBGP Neighbors are correct?

  A. The router will have an EBGP BGP neighbor from it must be connected directly, otherwise, IBGP-Multihop must be configured

  B. The router sends BGP updates learned from its EBGP neighbors to its other IBGP neighbors and EBGP neighbors

  C. IBGP neighbors can establish neighbor relationships through the Loopback interface

  D. The router sends BGP updates learned from its IBGP neighbors to its other IBGP neighbors and EPGP neighbors

  E. EBGP neighbors must be directly connected, otherwise, EBGP-Multi-hop must be configured with

  Correct Answer: BCE

• Question 79:

  As shown in figure, Clent1, C lent2 and Clent3 are simultaneously clients of RR1. Ri introduces 10 routes. It is assumed that the RGP is configured correctly. The neighbor relationship has been established, how many route entries exist in the BGP routing table of the most clIient3?

  

  A. 15

  B. 10

  C. 20

  D. 1

  Correct Answer: B

• Question 80:

  The Option field in OSPFv3 appears in all LSAs

  A. True

  B. False

  Correct Answer: B