Computer Virus Class 7 MCQ Quiz With Answers

Explanation
If the files are saved in any of these storage devices (USB, CD-ROMs, or memory card), then the virus cannot infect them. This means that all these storage devices have some form of protection or security measures in place that prevent the virus from spreading or infecting the files stored in them.

Explanation
Spam refers to unsolicited, unwanted mail. It is typically sent in bulk to a large number of recipients without their consent. Spam emails often contain advertisements, promotions, or fraudulent messages. They can be annoying, intrusive, and potentially harmful as they may contain viruses or phishing attempts. Therefore, the correct answer is "Spam."

Explanation
A program virus is a type of virus that infects program files with an ".EXE" extension. This means that when a user runs an infected program, the virus will also execute and potentially cause harm to the system. Unlike boot viruses, which infect the boot sector of a computer's hard drive, program viruses specifically target executable files. Trojan horses and malware are also types of malicious software, but they may not necessarily infect program files exclusively.

Explanation
The correct answer is "True" because a trojan is a type of malware that disguises itself as a legitimate program but actually performs malicious actions, such as stealing and transmitting the user's data to another person or entity without their knowledge or consent. Therefore, the statement accurately describes the behavior of a trojan.

Explanation
When a virus attacks, it can disrupt the normal functioning of computer applications. It can cause them to crash, freeze, or behave erratically. Therefore, the statement that computer applications run normally when the virus attacks is false.

Explanation
Worms are a type of malicious software that can spread themselves through computer networks without any user interaction. Unlike viruses, worms do not need to attach themselves to a host program or file to propagate. Instead, they can independently replicate and spread across a network, infecting other computers and devices. This makes worms a particularly dangerous and fast-spreading form of malware.

Explanation
Both i & ii refers to Spybots and Spyware. Spybots and Spyware are both types of tracking software that can be used to monitor and track activities on a computer or device. Spybots are specifically designed to collect information without the user's knowledge or consent, while Spyware is a broader term that encompasses any software that is designed to gather information about a person or organization without their knowledge. Therefore, the correct answer is Both i & ii.

Explanation
The correct answer is "Virus Definitions" because antivirus software relies on a database of known viruses to identify and remove malicious software from a computer. These virus definitions contain specific information about the characteristics and behavior of different viruses, allowing the antivirus software to detect and eliminate them. Without regularly updated virus definitions, antivirus software would not be able to effectively protect against new and emerging threats. Therefore, the database of viruses that antivirus software scans for is referred to as "Virus Definitions".

Explanation
A macro virus is a type of virus that infects data files. Unlike other viruses that typically infect executable files, macro viruses infect files that contain macro code, such as documents or spreadsheets. When these infected files are opened, the macro virus is activated and can spread to other files on the system. This type of virus is often spread through email attachments or shared files, and can cause damage by corrupting or deleting data.