लोकसेवा आयोग तथा विभिन्न सरकारी निकायहरूद्वारा लिइने कम्प्युटर अपरेटर (Computer Operator) र सहायक कम्प्युटर अपरेटर परीक्षाका लागि वस्तुगत बहुवैकल्पिक प्रश्नहरू (MCQs) निकै महत्त्वपूर्ण हुन्छन्। लिखित परीक्षामा बढी अङ्क ल्याउनका लागि धेरै भन्दा धेरै प्रश्नहरूको अभ्यास गर्नु आवश्यक छ।
यस लेखमा हामीले कम्प्युटर अपरेटर परीक्षाको पाठ्यक्रम (Syllabus) मा आधारित भएर विगतमा सोधिएका र भविष्यमा सोधिन सक्ने ५० वटा अति महत्त्वपूर्ण सामान्य तथा प्राविधिक प्रश्नोत्तरहरू संकलन गरेका छौँ।
### Computer Operator Exam - Top 50 Important MCQs
**१. Who is known as the father of computer?**
Answer: Charles Babbage
**२. Which of the following is the brain of the computer?**
Answer: CPU (Central Processing Unit)
**३. What is the full form of RAM?**
Answer: Random Access Memory
**४. Which memory is non-volatile in nature?**
Answer: ROM (Read Only Memory)
**५. 1 Byte is equal to how many bits?**
Answer: 8 bits
**६. Which of the following is an operating system?**
Answer: Windows, Linux, macOS (All of the above)
**७. What is the shortcut key to undo the last action in MS Word?**
Answer: Ctrl + Z
**८. In MS Word, which shortcut key is used for 'Find and Replace'?**
Answer: Ctrl + H
**९. What is the default file extension of MS Word 2007 and later versions?**
Answer: .docx
**१०. Which function key is used to refresh the active window or webpage?**
Answer: F5
---
### MS Excel & Database Questions
**११. What is the intersection of a row and a column in MS Excel called?**
Answer: Cell
**१२. Every formula in MS Excel must begin with which symbol?**
Answer: Equal to (=)
**१३. Which shortcut key is used to insert a new worksheet in MS Excel?**
Answer: Shift + F11
**१४. What is the default extension of an MS Excel file?**
Answer: .xlsx
**१५. In MS Excel, which function is used to count the number of cells that contain numbers?**
Answer: COUNT
**१६. Which of the following is a Database Management System (DBMS) software?**
Answer: MS Access, Oracle, MySQL
**१७. In MS Access, a table must have a unique identifier called:**
Answer: Primary Key
**१८. What is the maximum character length of a Short Text data type in MS Access?**
Answer: 255 characters
**१९. Which shortcut key is used to run a PowerPoint presentation from the beginning?**
Answer: F5
**२०. What is the file extension of a PowerPoint template file?**
Answer: .potx
---
### Networking & Internet Questions
**२१. What is the full form of URL?**
Answer: Uniform Resource Locator
**२२. Which protocol is used to securely transfer data over the web?**
Answer: HTTPS
**२३. What is the full form of LAN?**
Answer: Local Area Network
**२४. Which device is used to connect two dissimilar networks?**
Answer: Gateway
**२५. Junk e-mail is also called:**
Answer: Spam
**२६. What is the full form of Wi-Fi?**
Answer: Wireless Fidelity
**२७. HTML is used to create:**
Answer: Web Pages
**२८. What does 'C' stand for in CPU?**
Answer: Central
**२९. Which computer virus is designed to replicate itself?**
Answer: Worm
**३०. What is the shortcut key to permanently delete a file without sending it to the Recycle Bin?**
Answer: Shift + Delete
---
### Computer Fundamentals & IT Policy
**३१. Which generation of computers used vacuum tubes?**
Answer: First Generation
**३२. IC (Integrated Circuits) chips used in computers are usually made of:**
Answer: Silicon
**३३. What is the full form of ALU?**
Answer: Arithmetic Logic Unit
**३४. Which of the following is a pure input device?**
Answer: Scanner, Keyboard, Mouse
**३५. Laser printer belongs to which category of printers?**
Answer: Page Printer
**३६. What is the full form of BIOS?**
Answer: Basic Input Output System
**३७. Which DOS command is used to delete a directory?**
Answer: RD (Remove Directory)
**३८. In Windows, 'Ctrl + Esc' shortcut key is used to:**
Answer: Open Start Menu
**३९. What is the shortcut key to close the currently active application?**
Answer: Alt + F4
**४०. Cyber Law in Nepal was enacted in which year?**
Answer: 2061 BS (Electronic Transaction Act 2063)
---
### Advanced IT & Practical Based Questions
**४१. What is the default font size in a new MS Word document?**
Answer: 11 pt
**४२. Which feature in MS Word allows you to send the same letter to multiple recipients?**
Answer: Mail Merge
**४३. In MS Excel, a collection of worksheets is called:**
Answer: Workbook
**४४. Which shortcut key is used to open the 'Go To' dialog box in MS Word?**
Answer: Ctrl + G
**४५. What is the full form of PDF?**
Answer: Portable Document Format
**४६. Which topology requires a central controller or hub?**
Answer: Star Topology
**४७. What is the full form of GUI?**
Answer: Graphical User Interface
**४८. Verification of a login name and password is known as:**
Answer: Authentication
**४९. Which shortcut key is used to center align the text in MS Word?**
Answer: Ctrl + E
**५०. What is the binary equivalent of decimal number 10?**
Answer: 1010
### निष्कर्ष
यी ५० वटा प्रश्नहरू कम्प्युटर अपरेटर परीक्षाका लागि अत्यन्तै उपयोगी छन्। नियमित रूपमा यस्ता सेटहरू अभ्यास गर्नाले परीक्षाको समयमा सही उत्तर छनोट गर्न निकै मद्दत पुग्छ। हामी आगामी दिनहरूमा पनि यस्तै महत्वपूर्ण बुँदाहरू र मोडल सेटहरू थप्दै जानेछौँ।
तयारी गरिरहनुभएका सबै परीक्षार्थीहरूलाई सफलताको शुभकामना!