Basic Computer Knowledge Flashcards

Which device is used to convert digital signals to analog signals for transmission over telephone lines?

Answer: Modem

A modem (modulator-demodulator) converts digital signals to analog and vice versa.

What is the full form of URL?

Answer: Uniform Resource Locator

URL stands for Uniform Resource Locator, used to specify addresses on the internet.

Which of the following is an input device?

Answer: Scanner

A scanner is an input device that converts physical documents into digital format for the computer.

What does 'HTTP' stand for?

Answer: Hyper Text Transfer Protocol

HTTP stands for Hyper Text Transfer Protocol, the foundation of data communication on the web.

Which key combination is used to paste copied text in Windows?

Answer: Ctrl + V

Ctrl + V is the keyboard shortcut for pasting in Windows applications.

Which of the following is NOT an operating system?

Answer: Oracle

Oracle is a database management system, not an operating system. Windows, Linux, and macOS are all operating systems.

What is the main function of RAM in a computer?

Answer: Temporary data storage during processing

RAM (Random Access Memory) provides temporary storage for data and programs currently being used.

Which of the following file extensions indicates a presentation file?

Answer: .pptx

The .pptx extension is used by Microsoft PowerPoint for presentation files.

What does CPU stand for?

Answer: Central Processing Unit

CPU stands for Central Processing Unit, often called the 'brain' of the computer.

Which generation of computers introduced the use of integrated circuits (ICs)?

Answer: Third generation

Third generation computers (1964-1971) used integrated circuits, replacing transistors.

What is the binary equivalent of the decimal number 10?

Answer: 1010

Decimal 10 in binary is 1010 (8+0+2+0).

Which protocol is used for sending emails?

Answer: SMTP

SMTP (Simple Mail Transfer Protocol) is the standard protocol for sending emails.