Free Huawei H12-221-ENU Practice Test & Real Exam Questions

Exam Code/Number: H12-221-ENU
Exam Name/Title: HCIP-Routing&Switching-IERS(Huawei Certified ICT Professional-Implementing Enterprise Routing and Switching Network)
Certification Provider: Huawei
Corresponding Certification: HCNP-R&S

Exam Questions: 597
Updated On: Jun 17, 2026

Question #12

Regarding the multicast ASM model and the SSM model, which of the following statements are correct? (Multiple Choice)

A. The receiver in the ASM model cannot know the location of the multicast source in advance.

B. The receiver in the SSM model has been unable to know the specific location of the multicast source by other means.

C. SSM establishes a multicast forwarding tree directly between the receiver and the multicast source.

D. SSM and ASM use the same multicast address range

Discussion 0

Correct Answer: A,B,C Vote an answer

Question #13

Which of the following is wrong about multicasting? (Multiple choices)

A. Multicast technology is used in most "single-to-multiple" data distribution applications.

B. Because multicast technology is based on TCP, multicast technology can ensure the reliable transmission of packets.

C. The unicast technology and broadcast technology can't solve the problem of single send and multi-point receive. Only multicast technology can solve it.

D. Multicast technology can reduce redundant traffic and save network bandwidth.

Discussion 0

Correct Answer: B,C Vote an answer

Question #14

The default ACL step size defaults to 5.

A. TRUE

B. FALSE

Discussion 0

Correct Answer: A Vote an answer

Question #15

What mechanism does the IS-IS protocol use to ensure the reliability of neighbor relationship establishment on broadcast networks?

A. Three-way handshake

B. Aging timer

C. Status synchronization

D. Checksum

Discussion 0

Correct Answer: A Vote an answer

Question #16

The inter-area route summarization function is configured in which router?

A. BR

B. ABR

C. ASBR

D. IR

Discussion 0

Correct Answer: B Vote an answer

Question #17

Regarding the role of route filtering, which of the following description is correct?

A. Can avoid routing loops caused by inappropriate routing feedback

B. Can be used for precise route import and route advertisement control

C. You can influence routing by modifying the attributes of the route

D. Cannot avoid sub-optimal routing caused by route introduction

Discussion 0

Correct Answer: A Vote an answer

Question #18

Which of the following routes meet the following ACL conditions? (Multiple choices)

A. 10.1.3.1/32

B. 10.1.1.1/32

C. 10.1.2.1/32

D. 10.1.4.1/32

Discussion 0

Correct Answer: A,B Vote an answer

Question #19

The following is part of the configuration information of the router Huawei, which description about the configuration information is incorrect?
<Huawei> sysrem-view
[Huawei] ip as-path-filter 2 permit _200_300
[Huawei] route-policy test permit node 10
[Huawei-route-policy] if-match as-path-felter 2

A. The Route-Policy can only be called in the OSPF process.

B. Node 10 of the Route-Policy references AS path filter 2 and defines an if-match clause.

C. Define a Route-Policy named test with a serial number of 10

D. Set the AS path filter number 2 to allow the router information to include AS200 and AS300.

Discussion 0

Correct Answer: A Vote an answer

Question #20

IGMPv1 contains only two message types: membership query and membership report.

A. False

B. True

Discussion 0

Correct Answer: B Vote an answer

Question #21

The following is a partial output message of the router RTB. Which description of the output information is wrong?

A. The multicast group address to join is 225.1.1.2.

B. The number of dynamically joined multicast groups on an interface is 1.

C. Using the display igmp group command to view IGMP multicast group information, including multicast groups dynamically joined through member reports and multicast group information statically added through command lines.

D. The host that last sent the Report message is 225.1.1.2.

Discussion 0

Correct Answer: D Vote an answer

Question #22

IPV4 specifies the address range of SSM, which of the following options is correct?

A. 225.1.8.1/8

B. 232.1.8.1/24

C. 232.1.8.1/8

D. 192.1.8.1

Discussion 0

Correct Answer: C Vote an answer

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