Huawei HCNA - Carrier IP - H31-211 FREE EXAM DUMPS QUESTIONS & ANSWERS]

Question 1

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

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

Discussion 0

Correct Answer: A,D Vote an answer

Question 2

Which of the following application layer protocols is based on UDP?

A. TFTP B. HTTP C. Telnet D. FTP

Discussion 0

Correct Answer: A Vote an answer

Question 3

Regarding the process of terminal users accessing the Internet, what are the correct descriptions below?
(multiple choice)

A. The access network does not control the user, but simply establishes a Layer 2 connection to transparently transmit user information to the upper device. B. The user initiates an Internet access request, and the Layer 2 device of the access network establishes a Layer 2 connection for the user and transparently transmits the request to the upper BRAS device. C. After the user authentication succeeds, the BRAS routes the user packet to the upstream device, that is, the aggregation layer device. D. SR is responsible for the authentication, authorization, and assignment of IP addresses to users.

Discussion 0

Correct Answer: A,B,C Vote an answer

Question 4

The sender of the data communication system cannot be the receiver.

A. True B. False

Discussion 0

Correct Answer: B Vote an answer

Question 5

Which of the following techniques is used to convert a private network address to a public network address?

A. NAT B. DNS C. HTTP D. FTP

Discussion 0

Correct Answer: A Vote an answer

Question 6

PPP terminates the link at any time. When the carrier is lost, the authentication fails, the link quality detection fails, or the administrator manually closes the link, the link is terminated. In the link establishment phase, the link may be closed by exchanging The link termination message of the LCP. When the link is closed, the link layer notifies the network layer to perform corresponding operations, and also forcibly turns off the link through the physical layer.

A. True B. False

Discussion 0

Correct Answer: A Vote an answer

Question 7

What are the duplex modes supported by the Ethernet electrical port? (multiple choice)

A. Half duplex B. Full duplex C. Simplex D. Auto-negotiation

Discussion 0

Correct Answer: A,B,D Vote an answer

Question 8

Regarding the TTL field of the IP packet header, what are the following statements correct? (multiple choice)

A. Each time a IP packet passes through a network device, including Hub, LAN SWITCH, and router, the TTL value is subtracted from a certain value. B. The maximum possible value of TTL is 65535 C. Under normal circumstances, the router should not receive packets with TTL=0 from the interface. D. TTL is mainly to prevent the cyclic forwarding of IP packets in the network, wasting network bandwidth.

Discussion 0

Correct Answer: C,D Vote an answer

Question 9

The .IP header contains an 8-bit Type of Service (TOS) field. Which of the following are the TOS fields?
(Multiple choice)

A. 1bit maximum throughput B. 2bit maximum reliability C. 3bit COS field D. 1bit minimum delay

Discussion 0

Correct Answer: A,C,D Vote an answer

Question 10

Which of the following statements about broadcast in IPv6 is correct?

A. Broadcast, as a basic mechanism, is used in various IPv6 operations. B. The definition of broadcast in the IPv6 network is pending. C. Broadcast in LAN can affect all nodes. D. Broadcast is not used in IPv6.

Discussion 0

Correct Answer: D Vote an answer

Question 11

Which Telnet protocol is used for data transmission?

A. RTP B. SIP C. UDP D. TCP

Discussion 0

Correct Answer: D Vote an answer

Question 12

Is the Flag field in the PFP frame on the serial link usually filled with content?

A. 0xFF B. 0xFE C. 0x03 D. 0x7E

Discussion 0

Correct Answer: A Vote an answer

Question 13

What are the correct functions of the functions implemented on VRP? (multiple choice)

A. Defining the forwarding plane interface specification B. Achieve a unified user interface and management interface C. Implement control plane functions D. Prevent the interaction between the forwarding plane and the VRP control plane

Discussion 0

Correct Answer: A,B,C Vote an answer

Question 14

Which of the following two types of interfaces can the switch be? (multiple choice)

A. MDI_X B. MDI C. MDI_R D. MDI_S

Discussion 0

Correct Answer: A,B Vote an answer

Question 15

The characteristics of dynamic ECMP equal-cost routes are ()? (multiple choice)

A. Preference is the same B. Protocol is the same C. Cost is the same D. Mask is the same

Discussion 0

Correct Answer: A,B,C Vote an answer