In the context of computer security, which of the following terms describes a type of malicious software that is designed to spread from one computer to another?
答案解析
The question tests knowledge of computer security terminology. 'Virus' is the correct term for malicious software that spreads from one computer to another. 'Wage' is related to payment for work, 'water' is a liquid, and 'visa' is an official document allowing entry into a country. Options B, C, and D are therefore irrelevant to the context of computer security.
正确答案：A