Computer Science

The shortcut Ctrl+Shift+P is commonly used in Microsoft Word and similar word processors to access the font size tool. In older versions of Word (2000-2003), this shortcut focused the font size box on the toolbar, allowing direct typing of a new font size. In newer versions (2010 and later), it opens the full Font dialog box where font size can be adjusted. Other shortcuts like Ctrl+Shift+S or Ctrl+S perform different functions (e.g., Save or Styles pane). Therefore, option A is correct for accessing the font size tool via keyboard shortcut.

CSS stands for Cascading Style Sheets, which is the correct full form used in web development to describe the language used for styling HTML documents.

The '@' symbol is used in email addresses to separate the local part (username) from the domain part, effectively dividing the email into two parts.

The '@' symbol is used to separate the username from the domain name in an email address, effectively dividing the email into two parts.

CSS stands for Cascading Style Sheet, which is the correct full form used in web development to describe the style and layout of web pages.

CSS stands for Cascading Style Sheets, which is the correct and widely accepted expansion used in web development to describe the style sheet language.

The font size tool in many word processors, including MS Word, can be accessed using the shortcut Ctrl + Shift + P, which opens the font size dialog box. Ctrl + S is the shortcut for saving a document, so option C is incorrect.

The '@' symbol is used in email addresses to separate the local part (username) from the domain part, effectively dividing the email into two parts.

ASCII stands for American Standard Code for Information Interchange, which is a character encoding standard for electronic communication. The other options are incorrect expansions of the acronym.

Tim Berners-Lee, along with Robert Cailliau, invented the World Wide Web. He is widely recognized as the primary inventor of the WWW, making option B correct.

ENIAC (Electronic Numerical Integrator and Computer) was the first general-purpose electronic digital computer, completed in 1945. It is widely recognized as the first electronic computer, making option A correct.

ENIAC (Electronic Numerical Integrator and Computer) was the first general-purpose electronic digital computer, completed in 1945. IBM and Apple are companies, not specific early computers, and 'None of these' is incorrect.

Internet Explorer is a web browser used primarily for viewing web pages on the internet, making option C the correct answer.

A program written in a high-level language is called source code because it is the original code written by a programmer before being translated into machine code. Assembly programs and machine programs refer to lower-level representations, not high-level language code.

The smallest unit of memory or data in a computer is a bit, which represents a binary value of 0 or 1. Bytes and megabytes are larger units composed of multiple bits.

Floppy disk drives, hard disk drives, and optical disk drives are storage devices, not input or output devices. A teleprinter is an input/output communication device. Since the group includes storage devices and a communication device, none of the options 'Input device', 'Output device', or 'Both A and B' correctly categorize all of them together.

AI stands for Artificial Intelligence, which refers to the simulation of human intelligence in machines programmed to think and learn.

ALU stands for Arithmetic Logic Unit, which is a fundamental component of a computer's CPU responsible for performing arithmetic and logical operations.

Drivers are software programs that allow the computer to communicate effectively with printers, enabling smooth operation and proper functionality.

The BIOS is typically stored in an EEPROM (Electrically Erasable Programmable Read-Only Memory), which allows it to be updated or rewritten. Flash memory is a type of EEPROM, but the more precise and commonly accepted term for BIOS storage is EEPROM.

DOS stands for Disk Operating System, which is the correct full form of the acronym DOS. It refers to an operating system that runs from a disk drive.

EDVAC stands for Electronic Discrete Variable Automatic Computer, which was one of the earliest electronic computers designed to store programs in memory.

A laser printer is a non-impact printer because it uses a laser beam to produce an image on a drum that is then transferred to paper, unlike impact printers which physically strike an ink ribbon to print.

Ray Tomlinson is credited with inventing email in 1971 by implementing the first networked email system on ARPANET, making him known as the father of email.

Facebook was launched in 2004 by Mark Zuckerberg and his college roommates. This is a well-documented fact in technology history.