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Huawei H12-721 Exam Dumps - Actual Questions Answers

HCNP-Security-CISN (Huawei Certified Network Professional - Constructing Infrastructure of Security Network)

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  • Last Update: Jul 19, 2024
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H12-721 Questions and Answers

Question # 1

The ACK flood attack uses a botnet to send a large number of ACK packets, which impacts the network bandwidth and causes network link congestion. If the number of attack packets is large, the server processing performance is exhausted, thus rejecting normal services. Under the Huawei Anti-DDoS device to prevent this attack, compare the two processing methods - strict mode and basic mode, what is correct?


bypass deployment dynamic drainage using strict mode


In strict mode, the cleaning device does not check the established session, that is, the ACK packet does not hit the session, and the device discards the packet directly.


If the cleaning device checks that the ACK packet hits the session, the session creation reason will be checked regardless of the strict mode or the basic mode.


adopts "basic mode". Even if the session is not detected on the cleaning device, the device discards several ACK packets and starts session checking.

Question # 2

In a dual-system hot standby environment, if the path of the packet back and forth is inconsistent, which of the following conditions may result in packet loss?


does not enable session fast synchronization


Heartbeat bandwidth is insufficient


turned off the status monitoring function


specifies the wrong heartbeat port

Question # 3

In the DDoS attack defense, if the service learning function is used to find that there is no service or traffic of a certain service in normal traffic, you can use the blocking or traffic limiting method to defend against attacks on the Anti-DDoS device. .





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