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.

QA4Exam focus on the latest syllabus and exam objectives, our practice Q&A are designed to help you identify key topics and solidify your understanding. By focusing on the core curriculum, These Questions & Answers helps you cover all the essential topics, ensuring you're well-prepared for every section of the exam. Each question comes with a detailed explanation, offering valuable insights and helping you to learn from your mistakes. Whether you're looking to assess your progress or dive deeper into complex topics, our updated Q&A will provide the support you need to confidently approach the Huawei H12-721 exam and achieve success.

The questions for H12-721 were last updated on Apr 22, 2026.

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Question No. 1

L2TP is a tunneling protocol set up for transparent transmission of PPP packets between users and enterprise servers. Which of the following features are included?

AL2TP protocol uses the TCP protocol

Bsupports private address allocation and does not occupy public IP addresses.

Cand PPP configurations support authentication and work with Radius to support flexible local and remote AAA After combining with IPSec,

Dsupports encryption of packets.

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Correct Answer: B, C, D

Question No. 2

Defense against the cache server The main method of DNS request flood is to use the DNS source authentication technology:

ATRUE

BFALSE

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Correct Answer: A

Question No. 3

Which of the following attacks is a SYN Flood attack?

Aattacker sends a large number of SYN packets, which causes a large number of incomplete TCP connections to occupy the resources of the attacker.

Bmeans that the attacker and the attacked object normally establish a TCP full connection, but there is no subsequent message.

Cmeans that the attacker sends a large number of ICMP packets, such as ping, to the attacker.

Dmeans that the attacker occupies the link bandwidth of the server by sending a large number of UDP packets to the attacker.

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Correct Answer: A

Note: C is ICMP SYN; D is UDP SYN

Question No. 4

A user wants to limit the maximum bandwidth of the 192.168.1.0/24 network segment to 500M, and limit all IP addresses in the network segment to maintain a bandwidth of 1M. How should I configure a current limiting policy for this requirement?

AConfigure per-IP traffic limiting. The maximum bandwidth of the host on the 192.168.1.0/24 network segment is 500M.

BConfigure overall traffic limiting. The maximum bandwidth of the host on the network segment 192.168.1.0/24 is 1M.

CConfigure the overall traffic limiting. The maximum bandwidth of the host on the 192.168.1.0/24 network segment is 500M.

DConfigure the overall traffic limiting. The maximum bandwidth of the host on the network segment 192.168.1.0/24 is 500M. Then use the per-IP traffic limiting to ensure that the server bandwidth is 1M.

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Correct Answer: D

Question No. 5

In IPSec VPN, which one is incorrect about the difference between the barbaric mode and the main mode?

Amain mode does not support NAT traversal in pre-shared key mode, but aggressive mode support

Bmain mode negotiation message is 6, and barb mode is 3

CIn the NAT traversal scenario, the peer ID cannot use the IP address.

Dmain mode encrypts the exchange of identity information, while barbaric mode does not encrypt identity information

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Correct Answer: C

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