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Huawei HCIA-Security V3.0 Sample Questions:

1. Regarding the AH and ESP security protocols, which of the following options is correct? (Multiple Choice)

A) AH can provide encryption and verification functions
B) The agreement number of AH is 51.
C) ESP can provide encryption and verification functions
D) The agreement number of ESP is 51.

2. Device destruction attacks are generally not easy to cause information leakage, but usually cause network communication services to be interrupted.

A) True
B) False

3. Which of the following is not a key technology for anti-virus software?

A) Shelling technology
B) Self-protection
C) Real-time upgrade of the virus database
D) Format the disk

4. Which of the following is true about the description of the TCP/IP protocol stack packet decapsulation? (Multiple choice)

A) After the application layer receives the data packet, the application layer information is stripped after parsing, and the user data displayed at the end is exactly the same as the data sent by the sender host.
B) The data packet is first transmitted to the data link layer. After parsing, the data link layer information is stripped, and the network layer information is known according to the parsing information, such as IP.
C) After receiving the data packet, the network layer is stripped after parsing, and the upper layer processing protocol is known according to the parsing information, such as HTTP.
D) After the transport layer (TCP) receives the data packet, the transport layer information is stripped after parsing, and the upper layer processing protocol, such as UDP, is known according to the parsing information.

5. Which of the following description is wrong about the intrusion detection system?

A) Intrusion detection system includes all hardware and software systems for intrusion detection
B) The intrusion detection system can dynamically collect a large amount of key information and materials through the network and computer, and can timely analyze and judge the current state of the entire system environment.
C) The flood detection system can be linked with firewalls and switches to become a powerful "helper" of the firewall, which is better and more precise to control traffic access between domains.
D) The intrusion detection system can perform blocking operation if it finds that there is a violation of the security policy or the system has traces of being attacked.

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