Huawei Huawei Certifications H12-891 Questions & Answers

• Question 281:

  The following statement about the five types of LSAs in OSPF is used to pass external routes, and the following statement about the five types of LSAs is incorrect and flooding in

  A. OSPF networks in non-Stub/NSSA regions

  B. Routers in the same zone as ASBR can calculate external routes by chanting the LSA and the five types of ISAs in the region

  C. The FA address is included in the five types of LSAs, and the FA address is 000 only as reserved for no practical purpose

  D. Configuring the appropriate filtering policy on the ABR or ASBR can filter five types of LSAs

  Correct Answer: C

• Question 282:

  When you troubleshoot a local area network with Huawei equipment deployed, you find that there are a large number of unicast frames with unknown source AC addresses in the local area network . A large number of unknown source MAC addresses single-plug frames can cause the switch the biggest danger is ?

  A. Memory that occupies the cache ton

  B. Increases the power consumption of the power supply

  C. Consumes a TCAM table entry

  D. Consume the available bandwidth

  E. Consume the MAC address table entry available in the system

  Correct Answer: E

• Question 283:

  There are two Communily filters: ip comimuniy-lite lpemit 101201 ip community fiter 2permit101 ip commmuriyfilter 2pemit21 Regarding the above ommuniyfiter, the correct description is ?( Multiple choice questions).

  A. As long as the group attribute value carried in the BGP route contains 100:1 or 200:1, or both, the BGP route matches the community-filterl

  B. As long as the group attribute value carried in the BGP route contains 100:1 or 200:1, or both, the BGP route matches community-filter2

  C. The BGP route matches community-filter 1 only if the community attribute values carried in the BGP route contain 100:1 and 200:1

  D. A BGP route matches community-filter2 only if the group attribute values carried in the BGP route include 100:1 and 200:1

  Correct Answer: BC

• Question 284:

  Regarding the characteristics of CE double attribution, the description is wrong with ?

  A. CE accesses the backbone through two links that can be used as both load sharing and primary and standby links.

  B. CE and PE form a CE dual-home network, which can ensure high network availability.

  C. VRFs of two PEs connected to the same CE can belong to different VPNs.

  D. In the CE dual home network, it is possible to generate loops, and you can use route-tag to solve the loop problem.

  Correct Answer: C

• Question 285:

  Which timer for spanning tree protocol dictates how often to see the root bridge send configuration BPDUs?

  A. forwarding delay timer

  B. STP timer

  C. HOLD timer

  D. Maxage timer

  E. Hello timer

  Correct Answer: E

• Question 286:

  In an HW MPLS network, what parameters are used to define a forwarding equivalent class??

  A. BGP MED ?

  B. IP prefix

  C. RSVP requests resource reservation

  D. from CE Layer 2 links

  Correct Answer: BD

• Question 287:

  Port isolation technology deployed in Ethernet can realize Layer 2 interoperability and Layer 3 isolation, making networking more flexible.

  A. TRUE

  B. FALSE

  Correct Answer: B

• Question 288:

  As shown in the figure, the PPP link between R1 and R2 is not in the same network segment, but the R1 and R2 direct connectors can communicate, and the Ethernet link cannot communicate under the same planning, why?

  

  A. The interconnect POS ports of R1 and R2 learn the 24-bit subnet route of each other's direct connection ports through IPCP

  B. The interconnect POS ports of R1 and R2 learn the 32-bit host route for each other's direct connections through IPCP

  C. The interconnect POS port of RI and R2, through LCP learns the MAC address of the opposite termination , does not need to use ARP to request the MAC address

  D. The data packets of the interconnect POS ports of R1 and R2 do not need to encapsulate ethernet headers and do not need to use ARP to request MAC addresses

  Correct Answer: BD

• Question 289:

  In cross-domain VPN-OptionB packet forwarding, two ASBRs exchange the same LSP tags once.

  A. True

  B. False

  Correct Answer: B

• Question 290:

  There is a new HW office that needs to use their router as a DHCP server. When configuring the DHCP server to provide DHCP services to the current office, what of the following items need to be configured?

  A. Exclude unused IP addresses from the DHCP server

  B. Configure the timeout period for ping packets

  C. Configure the startup file for the DHCP server

  D. Configure manual binding

  E. Configure dhcp address pool

  Correct Answer: AE