Most Recent Huawei H12-721 Exam Dumps

Prepare for the Huawei HCIP-Security-CISN V3.0 exam with our extensive collection of questions and answers. These practice Q&A are updated according to the latest syllabus, providing you with the tools needed to review and test your knowledge.

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The questions for H12-721 were last updated on Jul 19, 2026.

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Question No. 1

The preemption function of the VGMP management group is enabled by default, and the delay time is 60s.

ATRUE

BFALSE

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Correct Answer: B

Note: The preemption function of the VGMP management group is enabled by default. The delay time is 30s, the priority of the master is 65001, and the priority of the slave is 65000.

Question No. 2

In the first phase of IKE V1, the pre-shared key master mode exchange process, in which message is the SA payload sent?

AMessage 1 and Message 2

BMessage 3 and Message 4

CMessage 5 and Message 6

DMessage 7 and Message 8
Note: IKE V1 Phase 1 mainly negotiates the following three tasks: First, negotiate the parameters used to establish IKE SA: encryption algorithm, integrity verification algorithm, identity authentication method and authentication word, DH group, IKE SA life cycle, etc. . These parameters are defined in the IKE security proposal. The second is to use the DH algorithm to exchange information related to the key (the material for generating various keys), and the peer devices can use each of the key information to generate a symmetric key for ISAKMP message encryption and verification. The third is to verify each other's identity and use a pre-shared key or digital certificate to verify identity.

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Correct Answer: A

Question No. 3

What is the correct description of IKE?

AIKE is a protocol carried by UDP and is a signaling protocol of IPSec.

BIKE negotiates an SA for IPSec and hands over the established parameters and security associations to IPSec.

CIPSec encrypts or verifies the packet by using the SA negotiated by IKE.

DIPSec must use IKE key exchange

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Correct Answer: A, B, C

Note: IPSec key exchange method: one is IKE; the second is manual configuration.

Question No. 4

Which of the following is the correct description of the SMURF attack?

AThe attacker sends an ICMP request with the destination address or the source address as the broadcast address, causing all hosts or designated hosts of the attacked network to answer, eventually causing the network to crash or the host to crash.

BThe attacker sends the SYN-ACK message to the attacker's IP address.

CThe attacker can send UDP packets to the network where the attacker is located. The source address of the packet is the address of the attacked host. The destination address is the broadcast address or network address of the subnet where the attacked host resides. The destination port number is 7 or 19.

DThe attacker uses the network or the host to receive unreachable ICMP packets. The subsequent packets destined for this destination address are considered unreachable, thus disconnecting the destination from the host.

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Correct Answer: A

Note: B-Land attack; C-Faggle attack: use UDP port 7 (ECHO) - respond to received content and port 19 (Chargen) will generate a character stream after receiving UDP message; D- special ICMP unreachable packet attack in packet attack

Question No. 5

In the IKE V1 pre-shared key mode, what is the main role of the data captured in the following figure?

Anegotiation phase 2 SA

BSA of negotiation phase 1

Cis used to exchange D-H public values, required random numbers

Dis used to exchange identity information

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Correct Answer: A

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