21. The famous social media website facebook is invented by-
- Bill Gates.
- Charles Babbage.
- Mark Zuckerberg.
- Salman Khan.
Answer with Explanation
Answer: Option C
Explanation: No explanation for this question.
22. Compact disc is an example of-
- Main memory.
- Cache memory.
- Secondary memory.
- none of these.
Answer with Explanation
Answer: Option C
Explanation: No explanation for this question.
23. ‘CTRL + A’ – this keyboard shortcut is used for-
- Selecting all the things of the current documents.
- Selecting the header of the current document.
- Selecting the Capital words of the current documents.
- Selecting only the letters of the current documents.
Answer with Explanation
Answer: Option A
Explanation: No explanation for this question.
24. The full form of DBMS is-
- Direct Beta Management System.
- DataBase Management System.
- Database Management Synchronization.
- Digital Beta Management System.
Answer with Explanation
Answer: Option B
Explanation: No explanation for this question.
25. Inkjet printer is a-
- Impact Printer.
- Non-Impact Printer.
- Page Printer.
- None of these.
Answer with Explanation
Answer: Option B
Explanation: Inkjet and Laser printers are non-impact printers. Non-Impact Printers are soundless printers. In Non-Impact printers the printer head does not touch the paper.
