Computer Knowledge Questions and Answers for Banks, SSC CGL, Railway and Other Competitive Exams.
Q1. What is the term for a malicious program disguised as legitimate software?
Correct Answer:
Trojan
Explanation:
A Trojan appears to be useful software but can harm your system.
Q2. Which component processes and executes instructions?
Correct Answer:
CPU
Explanation:
The CPU performs all the calculations and processes instructions.
Q3. Which shortcut key is used to paste copied data?
Correct Answer:
Ctrl + V
Explanation:
Ctrl + V pastes the data copied to the clipboard.
Q4. Which of the following is an open-source software?
Correct Answer:
LibreOffice
Explanation:
LibreOffice is an open-source office productivity software suite.
Q5. What is the function of cache memory?
Correct Answer:
To permanently store data
Explanation:
Cache memory stores frequently accessed data for faster processing.
Q6. What is the full form of SQL?
Correct Answer:
Structured Query Language
Explanation:
SQL is used to communicate with and manage databases.
Q7. What does VPN stand for?
Correct Answer:
Virtual Private Network
Explanation:
A VPN creates a secure and private connection over the internet.
Q8. What does BIOS stand for?
Correct Answer:
Basic Input/Output System
Explanation:
BIOS initializes hardware during the startup process.
Q9. What does GUI stand for?
Correct Answer:
Graphical User Interface
Explanation:
GUI allows users to interact with a system through graphical elements like icons and buttons.
Q10. What does USB stand for?
Correct Answer:
Universal Serial Bus
Explanation:
USB is a standard interface used to connect peripherals to computers.
Q11. Which term is associated with Big Data?
Correct Answer:
Velocity, Variety, Volume
Explanation:
These three V’s define the characteristics of Big Data.
Q12. What does SaaS stand for in cloud computing?
Correct Answer:
Software as a Service
Explanation:
SaaS provides software over the internet without requiring installation.
Q13. Which technology is the basis of smart devices in IoT?
Correct Answer:
Internet Connectivity
Explanation:
IoT connects smart devices through the internet for data sharing and automation.
Q14. What is Blockchain primarily used for?
Correct Answer:
Securing financial transactions
Explanation:
Blockchain is used for secure and transparent financial transactions, such as those in cryptocurrencies.
Q15. Which of the following is a feature of Artificial Intelligence (AI)?
Correct Answer:
Pattern Recognition
Explanation:
AI systems can identify patterns in data and make decisions based on them.