Huawei Huawei Certifications H12-891 Questions & Answers

• Question 331:

  When there are multiple rule rules for ACLs in VRP, which of the following statements is true regarding the order of matching? Single choice questions).

  A. By default, matching is based on the principle of "depth first"

  B. By default, matching occurs in the order in which the permit is matched first and denim later.

  C. By default, matching is made from smallest to largest according to the Rule-ID.

  D. There is only one matching order and cannot be modified.

  Correct Answer: C

• Question 332:

  What does IPV6 enable topology ipv6 mean under IS-IS protocol view?

  A. Does not have any meaning

  B. SPF calculation for IPv6 is not supported

  C. SPF calculation is performed separately in the topology of IPv4 and IPv6,

  D. IPv4, IPv6 using the same topology for SPF calculation

  Correct Answer: C

• Question 333:

  The following is the correct description of the aggregation of BGP (radio).

  A. After you configure the Aggregate ipv4-address mask, only aggregate routes are published, not detail routes.

  B. For IPv6 routing, BGP supports manual aggregation and automatic aggregation.

  C. BGP enables automatic aggregation by default.

  D. Routes in the BGP local route table can be manually aggregated.

  Correct Answer: D

• Question 334:

  The following description of CBWFQ is correct?

  A. CBwFQ can be configured with MQC and service-policy is applied to the exit direction

  B. CBwFQ can be used for both egress and inbound interfaces

  C. CBwFQ is delayed, jittered and bandwidth guaranteed for traffic catch

  D. CBWFQ can only be configured in hierarchical policies-maps. The parent policy-map performs supervision and the child policy-map performs

  Correct Answer: A

• Question 335:

  Which of the following options uses an alternate channel to enable communication between IPV6 addresses?

  A. DualStack

  B. 6to4

  C. ISATAP

  D. NAT64

  Correct Answer: BC

• Question 336:

  Host HW1 in the HW device network Wants to join a video conference, so what does that host do?

  A. Sends an IGMPv2 membership report to the default router unicast of the local network

  B. Sends a unicast IGMPv2 membership report to the RP

  C. The IGMPv2 membership report is sent over multicast in the local network, and the multicast address carried in the IGMPv2 membership report is the multicast address that you want to join

  D. The IGMPV2 membership report is sent over multicast in the local network, and the destination multicast address of the IGMPv2 membership report is "All PIM Routers" 224002 Multicast address

  Correct Answer: C

• Question 337:

  What are the differences between traffic policing and traffic shaping?

  A. Traffic shaping is applied in the inlet direction and traffic supervision is applied in the outlet direction

  B. For traffic shaping, the router caches excess packets until bandwidth is available again

  C. The token bucket algorithm is used for traffic supervision, and the SPD algorithm is used for traffic shaping

  D. For traffic policing, the usage of the buffer can be adjusted for traffic exceeding the CIR

  E. For traffic shaping, it can be over-CIR Traffic adjustment for the usage of the buffer

  Correct Answer: BE

• Question 338:

  When configuring the source NAT and having no pat configuration parameters, which of the following statements is true?( Radio)

  A. Perform destination IP address and destination port translation

  B. Only source P address translation occurs

  C. Only destination IP address translation occurs

  D. Simultaneous source P address and source port translation

  Correct Answer: B

• Question 339:

  If a Huawei switch runs the RSTP protocol, when will the BPDUs on a port on the switch be aged?

  A. On the interface, RSTP does not age BPDU

  B. After more than 6 seconds

  C. After Ma ge times out

  D. After Hello time times out

  E. after the Forward Delay timeout

  Correct Answer: C

• Question 340:

  As shown in the figure, all routers declare the loopback address in OSPF where the R storage does not return address is 1022 [2 declares 10033[ at the Ael.R3 ring E port[ 92101102A External routing in order to win light R win L away from the negative cut.

  

  The noodle command is as follows: (multi-select) [BIppprefixt permlt 1001.1.024 [R1] ospf1

  A. router RI of the IP routing table, there is no external route to 1001.1.0/24 of

  B. router R1 In the IP route table, there is an external route to 1001.1.0/24

  C. In the IP routing table of Router R1, there is no loopback route to

  D. In the IP routing table of Router R1, there is no loopback route to R3

  Correct Answer: ACD