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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:
Apr 26, 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

The figure shows the data flow direction of the Bypass interface in the Bypass working mode and the non-Bypass working mode. What are the following statements about the working flow of the electrical Bypass interface?

Options:

A.

When the interface is in the non-bypass state, the traffic flows from the GE0 interface to the USG through Router_a. After the USG processes, the traffic flows from the GE1 interface to Router_B.

B.

When the interface is working in the Bypass state, the traffic is forwarded from the GE0 interface to the USG. The USG does not pass any processing and flows directly from the GE1 interface to Router_B.

C.

When the firewall is configured to implement the security priority, the uplink and downlink services are not interrupted when the interface works in the bypass state. Therefore, the device can be kept in the Bypass state.

D.

The electrical bypass interface can only work in Layer 2 mode and has circuit bypass function.

Question 3

After the BFD session is established, the two systems periodically send BFD control packets. If a system does not receive any packets from the peer within the detection time, the status of the BFD session is considered to be Down. Which mode of detection is this mode called BFD?

Options:

A.

sync mode

B.

detection mode

C.

asynchronous mode

D.

query mode

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