Computer GK – Set 7

Computer GK – Set 7


1. A computer cannot do anything without a -


Ans: Programme
Explanation : A computer needs a program to function because programs provide instructions for processing data. Without a program, the computer cannot perform tasks, make decisions, or generate meaningful results.


2. Which of the following is not a hardware ?


Ans: MS Paint
Explanation : MS Paint is software, not hardware. Hardware includes physical components like a monitor or keyboard, while software refers to applications that run on the computer to perform tasks.


3. The command to reboot a computer is -


Ans: Ctrl + Alt + Del
Explanation: Pressing Ctrl + Alt + Del interrupts all running processes and brings up a system menu. From there, users can restart the computer, open Task Manager, or log out.


4. Keys labelled F1 to F12 are -


Ans: Function
Explanation: F1 to F12 are function keys that perform special tasks like opening help, refreshing pages, adjusting settings, or triggering shortcuts depending on the application or operating system.


5. Which technology is used by cryptocurrencies ?


Ans: Blockchain
Explanation (30 words): Cryptocurrencies use blockchain, a digital ledger where transactions are stored in secure, linked blocks. It prevents tampering, ensures transparency, and supports decentralized digital currency systems.


6. Shortcut to save a file is -


Ans: Ctrl + S
Explanation : Ctrl + S is the universal keyboard shortcut to save a document quickly. It updates the current file, preventing data loss and making saving faster than using menu options.


7. Which of the following is the strongest password ?


Ans: $XxY59&*
Explanation : This password is strongest because it includes uppercase, lowercase, numbers, and special characters. Complex combinations make passwords harder to guess or hack, improving account security significantly.


8. RTGS is a -


Ans: Payment System
Explanation: RTGS (Real-Time Gross Settlement) is a banking system used for high-value transfers. Money is transferred instantly and securely between banks without delay or batch processing.


9. Which one of the following is an example of an operating system ?


Ans: Microsoft Windows
Explanation: Microsoft Windows is an operating system that manages hardware, runs applications, controls files, and provides the graphical interface users interact with while operating a computer.


10. The smallest unit in a digital system is -


Ans: Bit
Explanation: A bit is the smallest data unit representing either 0 or 1. All computer data—text, images, audio, and commands—are stored and processed using combinations of bits.