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 provide backup services
B. To monitor network traffic for suspicious activity and alert administrators
C. To encrypt all data on the network
D. To prevent all unauthorized access
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 type of malware that can record keystrokes?
A. Worm
B. Adware
C. Ransomware
D. Keylogger

Correct Answer: Option D


Explanation:
A keylogger is a type of malware that records every keystroke made on a device, capturing sensitive information like passwords and credit card numbers.

This question belongs to: Computer Cyber Security
Question #2
Which of the following is a common technique used in phishing attacks?
A. Installing a virus on a computer
B. Physically stealing hardware
C. Sending fraudulent emails that appear to come from legitimate sources
D. Denial-of-service attack

Correct Answer: Option C


Explanation:
Phishing attacks often involve sending deceptive emails that look like they are from reputable companies to trick recipients into providing sensitive information.

This question belongs to: Computer Cyber Security
Question #3
What is the purpose of a security information and event management (SIEM) system?
A. To install software
B. To manage employee schedules
C. To handle customer complaints
D. To provide real-time analysis of security alerts

Correct Answer: Option D


Explanation:
A SIEM system collects and analyzes security alerts and logs from various sources, providing real-time analysis to detect and respond to potential threats.

This question belongs to: Computer Cyber Security