Computer MCQs for Competitive Exams

A disk, such as a hard disk drive or solid-state drive, serves as a secondary memory device for long-term data storage.

In computer architecture, computer memory is fundamentally organized as a large number of storage cells. Each of these cells, often referred to as a memory location or addressable unit, is capable of holding a specific amount of data—typically one bit (a 0 or a 1) in basic systems. These cells are arranged in a precise, hierarchical grid or array structure, allowing the computer's central processing unit (CPU) to efficiently read from or write to specific memory locations using unique addresses. While these cells are constructed using complex sets of electronic circuits, defining memory as a "large number of cells" best describes its structural organization and functional purpose as the primary workspace for the system. This modular approach to cell organization is what enables computers to store, retrieve, and manipulate vast quantities of binary information required for executing programs and performing complex computational tasks effectively and rapidly.

Tim Berners-Lee, often referred to as Tim, is widely credited with inventing the World Wide Web in 1989 while working at CERN.

Cache memory is a high-speed temporary storage area that significantly improves CPU processing by bridging the speed gap between the CPU and main memory.

A compiler primarily checks for syntax errors, which are violations of the programming language's grammatical rules, before translating code into machine language.

An email address is uniquely identified by combining a user name, which specifies the individual, and a domain name, indicating the mail server.

The Pivot Table Report is the specific Microsoft Office Web component designed to allow users to view and interact with pivot tables directly within a web browser, maintaining the functionality of the desktop version.

Printers are output devices, not storage devices; hard disks, floppy disks, and CD drives are all examples of data storage.

A "Turn key" is not a standard key found on normal computer or laptop keyboards, unlike Alt, Del, or Shift keys which are common.

Cookies are small data files stored on a user's computer by websites to remember user preferences and track return visits.

UNIX is an operating system originally developed by Bell Labs for scientists and engineers, known for its portability, multitasking, and multi-user capabilities.

Formatting is the essential process of preparing a disk for data storage by logically dividing its surface into tracks and sectors.

Raised refers to the vertical position of text, not a character spacing option like expanded or condensed.

Batch processing efficiently handles large volumes of transactions by collecting and processing them together at scheduled intervals, ideal for large systems.

WWW is the widely recognized acronym for World Wide Web, a global information system.

CD-ROM stands for Compact Disc Read-Only Memory, an optical disc format for data storage.

The earliest computers were programmed directly using machine language, which consists of binary instructions.

MICR is an acronym for Magnetic Ink Character Reader, a technology used for processing checks.

An embedded system is a dedicated computer system integrated as part of a larger device or machine.

John Napier, a Scottish mathematician, published his discovery of logarithms in the year 1614.

The output quality of a printer is typically measured in Dots Per Inch (DPI), indicating resolution.

The system unit internally houses components like the microprocessor and disk controller, but a modem is usually an external peripheral device.

Screens, printers, and speakers all serve as output devices, displaying or producing information from the computer for the user.

The ESC (Escape) key is commonly used to cancel commands, close drop-down lists, and exit dialog boxes in various software applications.