Which of the following is a type of computer virus that is designed to disguise itself as a legitimate program or file?

Correct Answer: A. Trojan Virus

Trojan Virus is a type of computer virus that is designed to disguise itself as a legitimate program or file. It derives its name from the story of the Trojan Horse in Greek mythology, where a deceptive wooden horse was used to gain entry into the city of Troy. Similarly, a Trojan virus appears to be harmless or beneficial, enticing users to download or execute it. Once activated, it can perform malicious actions, such as stealing sensitive information, damaging files, or providing unauthorized access to the attacker. Worms, spyware, and adware are other types of malware, but they have different characteristics and objectives.