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Huawei H12-721 Exam With Confidence Using Practice Dumps

Exam Code:
H12-721
Exam Name:
HCNP-Security-CISN (Huawei Certified Network Professional - Constructing Infrastructure of Security Network)
Certification:
Huawei Certified Network Professional HCNP
Vendor:
Huawei
Questions:
245
Last Updated:
Jun 15, 2025
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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HCNP-Security-CISN (Huawei Certified Network Professional - Constructing Infrastructure of Security Network) Questions and Answers

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Question 1

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

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Question 2

112. The ESP only verifies the IP payload and can perform NAT traversal, but the ESP encrypts the Layer 4 port information and causes the PAT function to be unusable. This problem can be solved by using the IPSec transparent NAT function, which encapsulates the ESP packet in the UDP header and comes with the necessary port information to make the PAT work normally.

Options:

A.

TRUE

B.

FALSE

Question 3

Which of the following is incorrect about IKE V1 and IKE V2?

Options:

A.

IKE V2 establishes a pair of IPSec SAs. Normally, an IKE SA and a pair of IPSec SAs can be completed by exchanging 4 messages twice.

B.

IKE V2 does not have the concept of master mode and barb mode

C.

To establish a pair of IPSec SAs, only 6 messages need to be exchanged in the IKE V1 master mode.

D.

When the IPSec SA established by D IKE V2 is greater than one pair, each pair of SAs needs only one additional exchange, that is, two messages can be completed.

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