Huawei H12-831 Exam Prep
HCIP-Datacom-Advanced Routing & Switching Technology (Page 12 )

Updated On: 17-Aug-2026

In addition to the virtual link, what type of IPv6 address is the source IPv6 address of the Hello packet of OSPFv3?

  1. IPv6 anycast address
  2. Unique local address
  3. Global unicast address
  4. Link local address

Answer(s): D



OSPFv2 is an IGP running on an IPv4 network, OSPFvV3 is an ICP running on an IPv6 network. OSPFv3 and OSPFv2 have the same message types, including Hallo messages, DD messages, LSU messages, LSU messages and SACK messages. Regarding OSPFv3 packets, which of the following statements is correct?

  1. OSPFv3 uses the authentication field in the header of the message to complete message authentication
  2. OSPFv3 uses the link-local address as the source address of the sent message, and the message can be forwarded outside the range of the originating link
  3. OSPFv3 uses IPv6 multicast addresses FFO2::5 and FFO2:.6 to send OSPFv3 packets
  4. The Hello packet of OSPFv3 carries the IPv6 address prefix list of the router interface

Answer(s): C



Which of the following regular expressions can only match BGP routing entries that pass through AS200 and then AS300?

  1. 200$|300$
  2. ^200|^300
  3. _(200 300)_
  4. _[200 300]_

Answer(s): C



Configure under a certain interface: isis timer hello 5 leve1-2, which of the following statements is correct?

  1. The interval for sending Level-2 hello packets on this interface is 5s
  2. The hello packet sending interval of Level-1 and Leval-2 of this interface is 3s.
  3. The interval for sending Level-2 CSNP packets of this interface is 5s
  4. The interval for sending Level-1 hello packets on this interface is 5s

Answer(s): A



In the test phase of cutover, which standards that can indicate the test has been completed?

  1. The configuration check result of the IP device is normal as the standard
  2. Test network business as normal as the standard
  3. The upper-layer application service test carried by the network is normal as the standard
  4. Check that the network is running normally as a standard

Answer(s): C



What is the meaning of the display current-configuration I include vlan command?

  1. View the physical interface information bound to each VLAN
  2. Check which VLANs are currently created
  3. View the IP address of the VLANIF interface
  4. View all configurations that contain the "VLAN" keyword

Answer(s): D



Regarding the BGPI MPLS IPVPN network architecture, which of the following descriptions is wrong?

  1. The P device only needs to have basic MPLS forwarding capabilities and does not maintain VPN related information
  2. Sites can visit each other through VPN, and a site can only belong to 1 VPN
  3. Under normal circumstances, CE equipment does not perceive the existence of VPN, and CE equipment does not need to support MPLS, MP-BGP, etc.
  4. The BGP/MPLS IP VPN network architecture consists of three parts: CE (Customer Edge), PE
    -(ProviderEdge), and P (Provider). PE and P are operator equipment, and CE is BGP/MPLS IPVPN user equipment.
    -

Answer(s): B



Regarding sham link, which of the following description is wrong?

  1. The sham link is a link between two VPN instances. Each VPN instance must have an endpoint address of the sham link, which must be a Loopback with a 32-bit mask in the VPN address space on the PE router. interface address
  2. In order to forward the VPN flow through the MPLS backbone network, the routing cost of the sham link should be less than the OSPF routing cost of the backdoor road
  3. The endpoint address of the sham link is advertised as a VPhv4 address by BGP. Routes that have passed sam1ik can also be imported into BGP in the form of VPNv4 routes
    -D. The sham link can be configured in any area and needs to be configured manually, and there must be a route to the sham link destination address (the sham link endpoint address of the peer PE) in the local VPN instance
    -

Answer(s): C



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