What is the function of a network intrusion detection system (IDS)? MCQ with Answer and Explanation

What is the function of a network intrusion detection system (IDS)?
A. To encrypt all data on the network
B. To monitor network traffic for suspicious activity and alert administrators
C. To prevent all unauthorized access
D. To provide backup services
Answer: Option B
Solution (By JKSSB Mock Tests)
An IDS monitors network traffic for malicious activities or policy violations and generates alerts to notify administrators.

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Practice More Cyber Security Questions

Question #1
Which of the following is a common method to secure a Wi-Fi network?
A. Disabling SSID broadcast
B. Using an open network
C. Sharing the password publicly
D. Disabling encryption

Correct Answer: Option A


Explanation:
Disabling SSID broadcast is a security measure that hides the network name, making it less visible to casual attackers.

This question belongs to: Computer Cyber Security
Question #2
What type of script vulnerability targets database processing fields by passing unvalidated parameters directly into an application’s dynamic query logic?
A. SQL Injection
B. Cross-Site Scripting
C. Denial of Service Loop
D. Buffer Overflow Exploit

Correct Answer: Option A


Explanation:
SQL injection executes arbitrary database commands by inserting malicious SQL code statements into unvalidated input fields.

This question belongs to: Computer Cyber Security
Question #3
What security mechanism acts as an analytical perimeter boundary, monitoring and filtering incoming and outgoing network traffic based on an organization's pre-established rule policies?
A. Intrusion Detection Honeypot
B. Digital Certificate Registry
C. Firewall
D. Antivirus Scan Engine

Correct Answer: Option C


Explanation:
A firewall filters data packets shifting across network interfaces, blocking or permitting connections according to specific access control security metrics.

This question belongs to: Computer Cyber Security