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Huawei H12-721 Exam With Confidence Using Practice Dumps

Exam Code:
H12-721
Exam Name:
Huawei Certified ICT Professional - Constructing Infrastructure of Security Network
Certification:
Huawei Certified Network Professional HCNP
Vendor:
Huawei
Questions:
217
Last Updated:
Apr 13, 2026
Exam Status:
Stable
Huawei H12-721

H12-721: Huawei Certified Network Professional HCNP Exam 2025 Study Guide Pdf and Test Engine

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Huawei Certified ICT Professional - Constructing Infrastructure of Security Network Questions and Answers

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Question 1

When an attack occurs, the result of packet capture on the attacked host (1.1.1.1) is as shown in the figure. What kind of attack is this attack?

Options:

A.

Smurf attack

B.

Land attack

C.

WinNuke attack

D.

Ping of Death attack

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Question 2

In the TCP/IP protocol, the TCP protocol provides a reliable connection service, which is implemented using a 3-way handshake. First handshake: When establishing a connection, the client sends a SYN packet (SYN=J) to the server and enters the SYN_SENT state, waiting for the server to confirm; the second handshake: the server receives the SYN packet and must send an ACK packet (ACK=1) To confirm the SYN packet of the client, and also send a SYN packet (SYN=K), that is, the SYN-ACK packet, the server enters the SYN_RCVD state; the third handshake: the client receives the SYN-ACK packet of the server. Send the acknowledgement packet ACK (SYN=2 ACK=3) to the server. After the packet is sent, the client and server enter the ESTABUSHED state and complete the handshake. Regarding the three parameters in the 3-way handshake process, which one is correct?

Options:

A.

1=J+1 2=J+1 3=K+1

B.

1=J 2=K+1 3=J+1

C.

1=J+1 2=K+1 3=J+1

D.

1=J+1 2=J 3=K+1

Question 3

Accessing the headquarters server through the IPSec VPN from the branch computer. The IPSec tunnel can be established normally, but the service is unreachable. What are the possible reasons?

Options:

A.

packet is fragmented, and fragmented packets are discarded on the link.

B.

There is load sharing or dual-machine link, which may be inconsistent with the back and forth path.

C.

route oscillating

D.

DPD detection parameters are inconsistent at both ends

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