support@Free-Braindumps.com
Register Login
Cisco
CompTIA
ISC
EC-Council
EXIN
Fortinet
ITIL
Juniper
Microsoft
VMware
Avaya
SAP
Google
NVIDIA
Salesforce
Amazon
Palo Alto Networks
ISC2
CrowdStrike
Anthropic
All Vendors
  1. Home
  2. Exams
  3. Huawei
  4. H12-831

Free H12-831 Exam Braindumps
HCIP-Datacom-Advanced Routing & Switching Technology Questions 185–192 (page: 25)

Updated On: 14-Aug-2026
Page 25 of 77
PDF with 603 Questions

There is the concept of forwarding equivalence class FEC in MPLS, which of the following description is wrong? (Choose two.)

  1. MPLS classifies packets with the same forwarding processing method into one category, which is called
    FEC
  2. A forwarding equivalence FEC will be assigned a unique label value on all routers
  3. The packets of the same FEC will be treated differently in the MPLS network
  4. The division of FEC is very flexible. It can be based on any combination of source address, address, source port, destination port, protocol type or VPN, etc.

Answer(s): B,C



Regarding the MPLS forwarding process, which of the following description of Ingress node forwarding is correct? (Choose two.)

  1. After receiving the data packet, the Ingress node will first check the ILM table to find the Tunnel ID
  2. Press the obtained label in the IP packet, and process EXP according to the QoS policy, and process L at the same time, and then send the encapsulated MPLS packet to the next hop
  3. Find the corresponding NHLFE entry according to the Tunnel ID of the ILM table, and associate the LFIB
    entry with the NHLFE entry
  4. Check the NHLFE entry, you can get the outgoing interface, next hop, outgoing label, and label operation type. The label operation type is Push

Answer(s): B,D



Which of the following statements about LDP label retention-free way is correct? (Choose two.)

  1. Need more memory and label space
  2. Keep all labels distributed by neighbors
  3. Only keep labels from next-hop neighbors, discard all labels sent by non-next-hop neighbors
  4. Save memory and label space

Answer(s): A,B



Which packets can Huawei equipment perform traffic suppression for?

  1. unknown Unicast
  2. Known unicast
  3. Multicast
  4. Broadcast

Answer(s): A,B,C,D



Regarding the description of the MPLS forwarding mechanism, which of the following is correct? (Choose two.)

  1. The system automatically assigns an ID to the upper-layer application that uses the tunnel, also known as
    Tunnel ID
  2. When an IP packet enters the MRLS domain, the FIB table is the first to be checked
  3. If the Tunnel ID value is not 0x0, and then enter the normal IP forwarding process
  4. If the Tunnel ID value is 0x0, and then enter the MPLS forwarding process

Answer(s): A,B



Regarding the description of the label encapsulation format in MPLS, which one is correct? (Choose two.)

  1. The total length of a single MPLS label is 4 bytes (32 bits)
  2. For Ethernet and PPP packets, the label stack is located between the layer 2 header and the data like the
    "underlay*": when there is a VLAN tag, the MPLS header is placed between the Ethernet header and the VLAN tag
  3. The S field in the label: 1 bit, used to identify whether the label is a label at the bottom of the stack, when the value is 1, it is the penultimate layer label
  4. The TTL field in the label is similar to the TTL (Time To Live) in the IP packet, and it also has the effect of preventing loops.

Answer(s): A,D



Which of the following descriptions about MPLS header TTL are correct? (Choose two.)

  1. There are two ways to correct MPLST and TTL. One is to copy the TTL value of the MPLS header when an
    IP packet enters the MPLS network. The other is to set the TTL of the MPLS header to 255 at the ingress LER.
  2. Can prevent infinite loop forwarding of messages
  3. The processing method of copying the IP TTL value hides the LSR of the MPLS domain and plays a certain security role
  4. In the case of banning Bay TTL, tracert can see the LSR of the MPLS domain that it passes through

Answer(s): A,B



Which of the following statements about VLAN aggregation is correct? (Choose two.)

  1. Super-VLAN only contains physical interfaces and cannot establish a Layer 3 VLANIF interface
  2. A Super-VLAN can contain one or more Sub-VLANs
  3. Sub-VLAN contains physical interfaces. A three-layer VLANIF interface can be established
  4. Sub-VLAN is used to isolate the broadcast domain

Answer(s): B,D



  PDF
Viewing page 25 of 77
Viewing questions 193 - 200 out of 603 questions


Post your Comments and Discuss Huawei H12-831 exam prep with other Community members:

AI Tutor AI Tutor 👋 I’m here to help!