Computer Software Exam Quiz

Explanation
If the battery in a desktop PC went dead, the date, time, and any non-default BIOS settings would be lost. This is because the battery in a desktop PC is responsible for maintaining the CMOS (Complementary Metal-Oxide-Semiconductor) chip's power supply, which stores the system's BIOS settings, including the date and time. When the battery dies, the CMOS chip loses power, causing these settings to be reset to their default values.

Explanation
The correct answer is "Cls". In DOS, the "Cls" command is used to clear the screen. When this command is executed, it removes all the text and graphics from the screen, providing a clean and empty display. This command is commonly used to improve readability and organization in the command prompt interface.

Explanation
Interface devices that communicate with the computer through input and output units are commonly referred to as peripherals. These devices include external devices such as keyboards, mice, printers, scanners, and monitors, which allow users to interact with the computer and transfer data to and from the computer system. Peripherals play a crucial role in expanding the functionality and usability of computers by providing additional input and output options.

Explanation
The octal numbering system is based on 8 digits. In this system, the digits range from 0 to 7. Each digit represents a value that is a power of 8. This system is commonly used in computer programming and digital electronics, especially when dealing with binary numbers.

Explanation
The correct answer is "Audio" because the file extension .au is commonly used to indicate audio files. This file format was developed by Sun Microsystems and is typically used for storing audio data on Unix-based systems.

Explanation
Acrobat Reader is a web browser plug-in that allows you to view a .PDF file. It is specifically designed for viewing and interacting with PDF documents, providing a range of features such as zooming, searching, and navigating through the document. Acrobat Reader is widely used and supported across different web browsers, making it the most suitable option for viewing PDF files on the web.

Explanation
A Java applet is a small embedded Java program that is designed to run within a web browser. It is typically used to add interactive features to websites, such as animations, games, or interactive forms. Applets are written in the Java programming language and can be easily downloaded and executed by a web browser, allowing them to run on different operating systems without any modifications. They provide a way to enhance the functionality and interactivity of web pages, making them a useful tool for web developers.

Explanation
Perl is the most common programming language of CGI scripts. CGI (Common Gateway Interface) is a standard protocol that allows web servers to execute scripts and generate dynamic web content. Perl is widely used for CGI scripting due to its strong text-processing capabilities, easy integration with web servers, and extensive library of modules specifically designed for web development. It provides a flexible and efficient solution for processing form data, interacting with databases, and generating dynamic web pages, making it a popular choice among developers for creating CGI scripts.