Question: An intentionally disruptive program that spreads from program to program or from disk to disk is known as a:

Answer:

An intentionally disruptive program that spreads from program to program or from disk to disk is known as a "computer virus."

Computer viruses are malicious programs designed to infect other programs or files and replicate themselves without the knowledge or consent of the user. They are typically created with the intent to cause harm, disrupt computer systems, steal information, or gain unauthorized access.

Computer viruses can spread through various means, such as email attachments, infected software downloads, compromised websites, or removable storage media. Once a virus infects a host program or file, it can replicate itself and spread to other programs, files, or systems, potentially causing damage or compromising the security of the affected systems.

Some common types of computer viruses include:

1. File Infector Viruses: These viruses attach themselves to executable files and infect other files when the infected file is executed.

2. Macro Viruses: Macro viruses infect documents and exploit the macro functionality in applications like Microsoft Word or Excel. They can spread through infected documents and macros, causing harm when the document is opened.

3. Boot Sector Viruses: These viruses infect the boot sector of a disk or a computer's Master Boot Record (MBR). When the infected disk or system is booted, the virus gets loaded into memory and can spread to other disks or systems.

4. Polymorphic Viruses: Polymorphic viruses have the ability to change their code or appearance to avoid detection by antivirus software, making them more challenging to identify and remove.

It is important to have up-to-date antivirus software and practice safe computing habits, such as avoiding suspicious email attachments, downloading files from trusted sources, and regularly updating software, to mitigate the risk of computer virus infections and their disruptive effects.