Huawei H31-211 Exam Questions
HCNA - Carrier IP (Page 20 )

Updated On: 17-Feb-2026

Which of the following protocols is used to transfer files that make up a page on the World Wide Web?

  1. TCP
  2. UDP
  3. DNS
  4. HTTP

Answer(s): D



What are the correct descriptions of the working principle of the Layer 2 Ethernet switch in the following options? (Multiple choice)

  1. All data frames on the network segment connected to the receiving port
  2. Establish a MAC address table by using the destination MAC address in the received data frame.
  3. Look up the destination MAC address in the data frame in the MAC address table, send the data frame to the corresponding port if it is found (excluding the source port); if not found, go to all ports except the source port send
  4. Address table maintenance using the address aging mechanism

Answer(s): A,C,D



Which of the following is the correct description of the Message Age in the configuration BPDU packet? (Multiple choice)

  1. If the configuration BPDU is sent by the root bridge, the Message Age is 1.
  2. Message Age is the total time that the BPDU is sent from the root bridge to the current bridge.
  3. In actual implementation, the BPDUs are configured to pass through a bridge, and the Message Age is increased by 1.
  4. The value of Message Age will not exceed 15

Answer(s): B,C



What is the role of the routing protocol?

  1. Basis for data forwarding
  2. Building a routing table
  3. Management router
  4. Generate an IP address

Answer(s): B



On the Eudemon firewall, NAT is enabled. What are the functions of NAT? (Multiple choice)

  1. Save public IP address
  2. Protecting private networks
  3. Facilitating network consolidation
  4. Improve access efficiency

Answer(s): A,B,C






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