Question

Which of the following is a computer program that detects, prevents and takes action to remove malicious codes like viruses, worms and trojan horses from the infected system?

• A. Antivirus Software
• B. Digital Certificate
• C. Firewall
• D. Cryptography

Hint:

{Antivirus software} protects computers from malware by scanning, detecting, and removing threats such as viruses, worms, and Trojan horses.

Answer 1

The Correct Option is A

Step 1: Understanding malicious software.
Malicious software, commonly known as malware, includes harmful programs such as viruses, worms, and Trojan horses. These programs can damage files, steal information, or disrupt computer operations.
Step 2: Role of Antivirus Software.
Antivirus software is designed to protect computers from malware. It scans files and programs in the system, identifies suspicious or harmful code, and removes or quarantines them.
Modern antivirus programs also provide real-time protection by continuously monitoring system activities and blocking potential threats before they infect the system.
Step 3: Evaluation of options.
(A) Antivirus Software: Correct. It detects, prevents, and removes malicious software.
(B) Digital Certificate: Incorrect. It is used for verifying identity and secure communication.
(C) Firewall: Incorrect. It controls network traffic but does not remove viruses.
(D) Cryptography: Incorrect. It protects data through encryption techniques.
Step 4: Conclusion.
Thus, the computer program used to detect and remove malicious codes from a system is Antivirus Software.
Final Answer: Antivirus Software.