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: May 30, 2026

Question #1

For the PIM-DM protocol, when an upstream interface receives a graft message, which of the following need to send packets to the downstream router?

A. Graft-ACK

B. Graft

C. Assert

D. Join

Discussion 0

Correct Answer: A Vote an answer

Question #2

The OSPF NBMA network type requires that routers in the network must select DR and BDR; otherwise, they can't work.

A. False

B. True

Discussion 0

Correct Answer: A Vote an answer

Question #3

Which of the following descriptions are correct about BGP Local-Preference? (Multiple Choice)

A. BGP Local-Preference is usually used in the routing rule policy to control how data flows into As

B. In the BGP routing rules, the priority of the MED is higher than the Local-Preference, that is, the priority is compared with the MED.

C. The default value of BGP route Local-Preference is 100.

D. In the BGP routing rule, the Preferred-Value has a higher priority than the Local-Preference, that is, the Preferred-Value is prioritized.

Discussion 0

Correct Answer: C,D Vote an answer

Question #4

The following description of Local-Preference, which is correct?

A. Local-Preference is recognized as mandatory.

B. The default value of Local-Preference is 100.

C. Local-Preference affects the traffic entering the AS.

D. Local-Preference can be spread across AS.

Discussion 0

Correct Answer: B Vote an answer

Question #5

The AS-Path attribute records all the AS numbers that a route passes through from the local to the destination address in vector order. Therefore, the neighboring AS numbers farthest from the local AS are listed in the front, and the other AS numbers are arranged in order.

A. TRUE

B. FALSE

Discussion 0

Correct Answer: B Vote an answer

Question #6

Which of the following description about configuration commands for issuing default routes for each protocol is wrong?

A. In the RIP protocol, the default-route originate command is used to generate a default route or send the default route in the routing table to the neighbor.

B. In the OSPF protocol, the default-route-advertise command is used to advertise the default route to the common OSPF area.

C. In the BGP protocol, the default-route imported command is used to enable the import of default routes into the BGP routing table.

D. In a static route, the ip route-static default-preference command is used to generate a default route on the current router.

Discussion 0

Correct Answer: D Vote an answer

Question #7

Both policy routing and routing policies can affect the forwarding process of data packets, but they affect the packets differently. Policy routing is based on policy-based forwarding. Find the routing table forwarding after failure. Based on the forwarding plane, it serves the forwarding policy and needs to be manually configured. The routing policy is based on the destination address and is forwarded according to the routing table. Based on the control plane, it serves the routing protocol and the routing table, and combines with the routing protocol to complete the policy.

A. TRUE

B. FALSE

Discussion 0

Correct Answer: A Vote an answer

Question #8

Which of the following command is used to check Type 2 LAS detailed information?

A. display ip ospf Isdb router

B. display ospf Isdb network

C. display ip ospf Isdb network

D. display ospf Isdb router

Discussion 0

Correct Answer: B Vote an answer

Question #9

Which of the following description of MED is incorrect? (Multiple Choice)

A. MED affects the flow from the AS

B. MED is an optional non-transition property.

C. The default value of MED is 0.

D. MED can only be transmitted within this AS.

Discussion 0

Correct Answer: B,C Vote an answer

Question #10

Which of the following description about DR is correct?

A. The source DR is responsible for sending Register messages with multicasting to the RP.

B. In the network segment DR election, when the DR priority is the same, the bigger IP address is elected.

C. The receiver DR is responsible for sending Join messages to the multicast source or RP.

D. Assert Winner on the shared network segment may not be the network segment DR.

Discussion 0

Correct Answer: B,C,D Vote an answer

Question #11

Which of the following is true about OSPF protocol? (Multiple choice)

A. The cost of the external route of the second type is only the external cost of AS, and the internal cost of the AS is ignored.

B. AS-Externa|-LSA describes the path from the router to ASBR.

C. AS-Externa|-LSA does not belong to any area.

D. AS-Externa|-LSA describes the path to the external route of the AS. The scope of the flooding is outside the AS.

Discussion 0

Correct Answer: A,C Vote an answer

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