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Huawei H12-731-ENU Exam Syllabus Topics:

Huawei HCIE-Security (Huawei Certified Internetwork Expert-Security) Sample Questions:

1. The WeChat voice (TCP) service of a site experienced a large delay, and the delay reached 3 seconds. As its egress NAT gateway, the firewall is configured with easy-ip nat mode (single egress), with link state detection disabled, TCP aging time of 30 seconds, small business traffic, and nearly 50,000 sessions to the voice server. Through the session, you can see a large number of packets of one-way access to the voice server.
What is the correct cause and solution for this failure?

A) If there is no inconsistency between the round-trip paths on the link, you can enable the link status detection function, and the aging time is default, which can solve this problem.
B) The solution could increase the TCP aging time to 600 seconds.
C) After the firewall session is aging, the port after the NAT of the new connection is inconsistent with the port used to establish the connection with the server, resulting in no response from the server. The client needs to re-establish the connection after timeout before sending data.
D) The aging time of the TCF session is too short, and it takes time for the firewall to create a new session.

2. Which of the following is correct for the functional comparison of NIP5000 and NIP5000D:

A) NIP5000 is generally connected directly, and NIP5000D is generally connected by bypass.
B) Regarding DDOS, NIP5000 supports two defense modes: automatic defense and no defense, while NIP5500D can only support automatic defense.
C) NIP5000 can analyze, limit and block specific application protocol traffic; NIP5000D can only analyze application traffic.
D) The NIP5000 can be directly connected to the female, while the NIP5000D must be linked through the firewall to achieve the blocking action.

3. Which fields in the packet need to be analyzed in the firewall's IP packet fragmentation and reassembly?

A) Identifier
B) Fragment Offset
C) Lifetime TTL
D) Total Length
E) Flags

4. The correct deployment recommendations for the abnormal traffic cleaning system are:

A) The management server sends policies to network devices through SNMP protocol.
B) Side-by-side deployment or in-line deployment at the network egress.
C) The management server uses Telnet to monitor network devices.
D) The testing center and cleaning center report logs to the collector.

5. The difference between IKEv1 and IKEv2, which of the following descriptions are correct?

A) The integrity algorithm of the IKE SA is only supported by IKEv1.
B) IKEv2 can use AAA server to assign private IP address, IKEv1 cannot provide this function.
C) IKEv1 supports DPD by default. As long as DPD is configured on one end, the other end can respond to DPD packets. IKEv2 cannot.
D) IKE SA and IPsec SA are established, using 4 messages for IKEv2 and 9 messages for IKEV1 main mode.

Solutions: