Regarding scanning and snooping attacks, which of the following descriptions is wrong?

• A.The source address of the scanning attack is real, so it can be defended by adding direct assistance to the blacklist.
• B.It is usually the network detection behavior before the attacker launches the real attack.
• C.Scanning attacks include address scanning and port scanning.
• D.When a worm virus breaks out, it is usually accompanied by an address scanning attack, so scanning attacks are offensive.

Comment: *

Name: *

Email: *

Verification: *

Anti-DDoS defense system includes: management center, inspection center and cleaning center.

• A.True
• B.False

Comment: *

Name: *

Email: *

Verification: *

In the construction of information security, the intrusion detection system plays a role as a monitor. Through monitoring the traffic of critical nodes in the information system, it conducts in-depth analysis and explores the security events that are taking place. Which of the following are its characteristics?

• A.Cannot perform in-depth inspection
• B.Unable to detect malicious operations or mis-operations from insiders.
• C.IDS can be linked with firewalls and switches to become a powerful "helper" for firewalls to better and more precisely control access between domains.
• D.Malicious code that is doped in allowable application data streams cannot be correctly analyzed.

Comment: *

Name: *

Email: *

Verification: *

A business administrator wants to prevent employees from accessing shopping websites during business hours. A URL filtering configuration file was then configured to select the shopping site in the predefined category as blocked. However, employee A can still use the company's network to shop online during the lunch break.
What are the possible reasons for the following? (Multiple choices)

• A.The administrator did not submit the configuration after configuration.
• B.The administrator did not set the time period to 9:00-18:00 daily.
• C.The shopping site does not belong to the predefined shopping site category.
• D.The administrator did not apply the URL filtering profile to the security policy.

Comment: *

Name: *

Email: *

Verification: *

Under the CLI command, which of the following commands can be used to view the AV engine and virus database version?

• A.display utm av version
• B.display utm version
• C.display av utm version
• D.display version av-sdb

Comment: *

Name: *

Email: *

Verification: *