1. Home
  2. Huawei
  3. H12-891

Huawei H12-891 Online Practice Questions and Exam Preparation

H12-891 Exam Details

  • Exam Code
    :H12-891
  • Exam Name
    :HCIE-Datacom V1.0
  • Certification
    :Huawei Certifications
  • Vendor
    :Huawei
  • Total Questions
    :923 Q&As
  • Last Updated
    :May 27, 2026

Huawei H12-891 Online Questions & Answers

  • Question 71:

    Run SSM across the entire HW IP multicast network. Which of the following statements about SSM is correct? (Choose three)

    A. No RP is required
    B. SSM uses only shared trees
    C. SSM uses only the SPT tree
    D. Ideal for one-to-many applications
    E. SSM is recommended when you have multiple sources and want to minimize the mroute state in your network; ideal for many-to-many applications

  • Question 72:

    Which of the following description about the BGP reflector is correct? (Choose three)

    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-clients

  • Question 73:

    If you use the default-route imported command when no default route exists in the local IP routing table, a default route is issued to the BGP peer (group).

    A. True
    B. False

  • Question 74:

    When a client invokes the iMaster NCE-Campus RESTful API, it sends an HTTP request. The server then returns the status code 401. Which of the following errors has occurred?

    A. Unauthorized
    B. The requested resource does not exist
    C. Access denied
    D. The service is unavailable

  • Question 75:

    Which of the following parameters are not required when configuring BGP peers? (Choose two)

    A. AS number
    B. Password C. Peer IP address
    D. Description

  • Question 76:

    Which of the following description of MED is correct? (Choose two)

    A. The MED default value is 100
    B. MED can only be passed within this AS
    C. MED is an optional non-transitive attribute
    D. The MED default value is 0

  • Question 77:

    Which of the following is not the function of OSPFv3 Link-LSAs?

    A. Advertises the interface ID of the local router to other routers attached to the link.
    B. Advertises the link-local address of the local interface to other routers attached to the link.
    C. Advertises a list of IPv6 prefixes of the local interface to other routers attached to the link.
    D. Advertises the Options field in the Network-LSA originated on the local link to other routers attached to the link.

  • Question 78:

    Refer to the following command output on the router R1. Which of the following statements is incorrect?

    display interface Tunnel Tunnel0/0/0 current state : UP Line protocol current state : UP Last line protocol up time : 15:21:23 UTC-08:00 Description: ! 0.0.3.3 Route Port, The Maximum Transmit Unit is 1500 Internet Address is 20.1.1.1/24 Encapsulation is TUNNEL, loopback not set

    Tunnel source 10.0.1.1 (LoopBack0), destination 10.0.3.3 Tunnel protocol/transport GRE/IP, key disabled keepalive disabled Checksumming of packets disabled

    Current system time: 15:21:37-08:00 300 seconds input rate 0 bits/sec, 0 packets/sec 300 seconds output rate 0 bits/sec, 0 packets/sec 13 seconds input rate 0 bits/sec, 0 packets/sec 13 seconds output rate 448 bits/sec, 0 packets/sec 9 packets output, 824 bytes 0 output error

    Input bandwidth utilization : Output bandwidth utilization :

    A. Key authentication is disabled for the tunnel.
    B. The destination IP address of the tunnel is 10.0.3.3.
    C. The tunnel is a GRE tunnel.
    D. Keepalive detection is enabled on the tunnel.

  • Question 79:

    Which of the following statements about VXLAN principles is incorrect?

    A. VXLAN uses MAC-in-UDP encapsulation to encapsulate Ethernet packets into UDP packets and thereby extend Layer 2 networks.
    B. When VXLAN is deployed, in addition to devices at both ends of a VXLAN tunnel, intermediate forwarding devices are also required to support VXLAN. Otherwise, VXLAN packets cannot be forwarded.
    C. VXLAN packets are forwarded through routes on the underlay network, and the MAC address of the terminal in the inner data frame is not considered during underlay forwarding.
    D. VXLAN can be deployed on campus networks to implement Layer 2 and Layer 3 communication.

  • Question 80:

    RTA is the source DR router, RTB is the RP router, and the multicast source sends multicast data to RTA, but PIM is not visible on RTB. The multicast source is registered to the message, but the issue persists. What are the possible causes? (Choose four)

    A. The multicast network statically configures the RP, while the RTA router does not statically configure the RP.
    B. The RP elected by RTA is not RTB.
    C. There is no unicast routing from RTB to RTA, causing RTB to fail the RPF check for the source.
    D. The multicast network dynamically elects the RP, but RTA fails the RPF check for BSR.

Related Exams:

Tips on How to Prepare for the Exams

Nowadays, the certification exams become more and more important and required by more and more enterprises when applying for a job. But how to prepare for the exam effectively? How to prepare for the exam in a short time with less efforts? How to get a ideal result and how to find the most reliable resources? Here on Vcedump.com, you will find all the answers. Vcedump.com provide not only Huawei exam questions, answers and explanations but also complete assistance on your exam preparation and certification application. If you are confused on your H12-891 exam preparations and Huawei certification application, do not hesitate to visit our Vcedump.com to find your solutions here.