COMPUTER OPERATOR (BS-15) 2026

1. RAID is used for?

• A Improve processing speed
• B Improve graphics
• C Enhance storage performance by distributing data across multiple drives Correct answer
• D Enhance network security

2. What defines the rule for communication between Computers?

• A Hardware
• B Operating System
• C Protocol Network Correct answer
• D Software

3. In MS Access, if you want to search for a word that is exactly 5 charact

• A S*
• B S?
• C S#
• D S???? Correct answer

4. Which of the following is not a routing protocol?

• A ICMP Correct answer
• B RIP
• C BGP
• D OSPF

5. Ethernet card is a network adaptor used to set up a wired network. It is

• A Wifi card
• B Fiber optics
• C Bluetooth
• D Network interface card Correct answer

6. Which protocol or service is used to remote log into another computer?

• A FTP
• B UDP
• C RARP
• D Telnet Correct answer

7. The lock is related to the door, in the same way the password is related

• A Gate
• B Computer Correct answer
• C Verify
• D Wildcard letters

8. Which of the following is not a layer in OSI Model?

• A Physical Layer
• B Process Layer Correct answer
• C Transport Layer
• D Network Layer

9. What is the purpose of indexing?

• A To reduce table size
• B To speedup data search Correct answer
• C Both A & B
• D None of the above

10. The type of cryptography in which one key is public and the other is pri

• A Asymmetric Key cryptography Correct answer
• B Hash cryptography
• C Symmetric Key cryptography
• D Quantum cryptography

11. In which network topology is a single central point failure (e.g., via a

• A Star Topology Correct answer
• B Mesh Topology
• C Bus Topology
• D Ring Topology

12. Which OSI layer is responsible for end-to-end communication and error ha

• A Network Layer
• B Transport Layer Correct answer
• C Session Layer
• D Data Link Layer

13. In networking MTU refers to?

• A Maximum Transfer Unit
• B Minimum Transmission Unit
• C Maximum Throughput Unit
• D The Maximum size of the single data packet that can be transmitted Correct answer

14. In networking Bandwidth refers to?

• A The maximum data transfer rate of a network connection Correct answer
• B The frequency of the signal
• C The distance data travels
• D The physical width of the cable

15. In graph in which every node is connected to other node is called?

• A Directed graph
• B Weighted graph
• C Complete graph Correct answer
• D Sparse graph

16. In fiber optics, the phenomenon where the strength of light decreases as

• A Refraction
• B Attenuation Correct answer
• C Dispersion
• D Reflection

17. Which type of malware replicates itself without any user action?

• A Virus
• B Worm Correct answer
• C Trojan
• D Spyware

18. Which of the following is NOT a valid Excel formula syntax?

• A 0
• B SUM(Sales)/(10-5) Correct answer
• C #DIV/0!
• D 0

19. In computer operating system, checkpoints are used for?

• A Security
• B Recovery process Correct answer
• C Performance monitoring
• D User authentication

20. In PowerPoint, a presentation is a collection of?

• A Slides Correct answer
• B Fields
• C Records
• D Cells

21. An excel workbook is a collection of?

• A Workbooks
• B Worksheet
• C Charts
• D Both B & C Correct answer

22. The HTTP protocol works on which port by default?

• A 21
• B 80 Correct answer
• C 25
• D 443

23. ALU perform?

• A Storage operations
• B Arithmetic and logical operations Correct answer
• C Control Operations
• D Input/Output operations

24. Deadlock in an operating system occurs when?

• A A process terminates unexpectedly
• B A process waits indefinitely for resources held by other processes Correct answer
• C CPU is overloaded
• D Memory is insufficient

25. Which of the following is a valid option for backing up a hard drive usi

• A Cloud Storage
• B Network Drive
• C USB Drive Correct answer
• D Internal Hard Drive