RRB NTPC Computer and Technology Basics 2 — Questions and Answers
Question 1: Which key is used to undo an action in most applications?
- Ctrl + Z (Correct answer)
- Ctrl + X
- Ctrl + Y
- Ctrl + U
Correct answer: Ctrl + Z
Ctrl + Z is the universal keyboard shortcut to undo the last action in most software applications.
Question 2: The binary number system uses which digits?
- 0 to 7
- 0 to 9
- 0 and 1 (Correct answer)
- 1 to 9
Correct answer: 0 and 1
The binary number system is base-2 and uses only two digits: 0 and 1.
Question 3: What does 'RAM' stand for?
- Random Access Memory (Correct answer)
- Read Access Module
- Rapid Access Memory
- Random Allocation Module
Correct answer: Random Access Memory
RAM stands for Random Access Memory, which is the computer's temporary working memory.
Question 4: Which of the following is NOT an operating system?
- Windows
- Linux
- Oracle (Correct answer)
- macOS
Correct answer: Oracle
Oracle is a database management system, not an operating system; Windows, Linux, and macOS are all operating systems.
Question 5: The Internet was originally developed by which organization?
- NASA
- ARPA (US Department of Defense) (Correct answer)
- IBM
- MIT
Correct answer: ARPA (US Department of Defense)
The Internet evolved from ARPANET, a project funded by ARPA (Advanced Research Projects Agency) of the US Department of Defense.
Question 6: Which file extension is used for Microsoft Word documents?
- .xls
- .ppt
- .docx (Correct answer)
Correct answer: .docx
Modern Microsoft Word documents use the .docx extension (Document XML format).
RRB NTPC Computer and Technology Basics 2
Which key is used to undo an action in most applications?