Computer MCQs for Competitive Exams

Spreadsheets are specifically designed to organize and analyze business data efficiently in a structured format of rows and columns.

DVI stands for Digital Visual Interface, which is a video display interface used to connect a video source to a display device.

High-level programming languages require compilation or interpretation into machine language before a computer's processor can execute their instructions.

IP stands for Internet Protocol, which is the fundamental set of rules for sending data across the internet and local networks.

William Oughtred invented the slide rule in the 17th century, a mechanical analog computer used for multiplication and division.

In Microsoft Excel, pressing the Shift+Space key combination is the correct shortcut to select an entire row.

Satya Nadella is the current Chief Executive Officer of Microsoft, leading the company's strategic direction and innovation since 2014.

Computer programs are sets of instructions that guide a computer to perform specific tasks and operations, enabling its functionality.

File transfer is moving a digital file copy from one computer to another over a communication channel.

Multitasking allows an operating system to run multiple tasks or programs simultaneously by rapidly switching CPU attention.

Spam is unsolicited bulk email, primarily an annoyance, unlike hackers, viruses, or identity theft which are direct security risks.

Random Access Memory (RAM) is the primary working memory where the CPU first accesses data and instructions for active processing.

A DVD (Digital Versatile Disc) is a type of optical disc storage medium, utilizing lasers to read and write data.

A master file holds permanent data about an entity, updated by transaction files to reflect its current status.

A computer virus is a malicious program designed to replicate itself and spread from one program or disk to another, causing disruption.

A digital clock is a device that displays time numerically, representing data in discrete digits, which is characteristic of digital devices.

A UPS (Uninterruptible Power Supply) provides temporary battery power to a computer system, preventing data loss during unexpected power failures.

A CPU (Central Processing Unit) fundamentally contains a control unit, which manages and coordinates all operations within the computer system.

A touch screen functions as both an input device for user interaction and an output device for displaying visual information simultaneously.

UNIVAC stands for Universal Automatic Computer, which was one of the earliest commercial computers designed primarily for business and administrative data processing.

Hybrid computers combine the capabilities of analog computers for measuring and digital computers for counting, offering versatile functionality.

Line spacing refers to the vertical distance between lines of text in a document, which can be adjusted to improve readability and layout.

A network server is the most powerful computer in a typical network, managing resources and providing services to connected clients.

DMA stands for Direct Memory Access, a feature that allows certain hardware subsystems to access main system memory independently of the CPU.

Microprocessors, integrating entire CPUs onto a single chip, are the defining characteristic and switching devices for fourth-generation computers.