MCQ IN COMPUTER SCIENCE & ENGINEERING

Detailed explanation-1: -Computer viruses are designed to attack your system. They spread from machine to machine via shared links, uploaded and downloaded files, or compromised websites. People spread viruses when they link and share carelessly or don’t use proper antivirus protection.

Detailed explanation-2: -Typically, computer viruses spread through malicious online downloads, infected email attachments, or by plugging in infected hardware like an external flash drive (USB stick). Computer viruses can spread through almost any method of file sharing, as long as the virus can avoid detection by antivirus programs.

Detailed explanation-3: -The correct answer is When downloading unknown software from the internet. There are several ways a computer can get infected by a virus and most of them involve downloading – either intentionally or unintentionally – infected files.

Detailed explanation-4: -There are many common approaches, but the following are some of the most popular methods owing to their efficacy and simplicity: Downloading infected files as email attachments, from websites or through filesharing activities. Clicking on links to malicious websites in emails, messaging apps or social network posts.