Storage Devices MCQs with Explanations
Storage Devices MCQs with Answers & Explanations
CBSE Class 9 – Computer Science
Class: 9 | Subject: Computer Science | Section: Computer Hardware | Topic: Storage Devices | CBSE Board Examination
Instructions: These Multiple Choice Questions (MCQs) are designed strictly as per the NCERT syllabus, making them ideal for CBSE Class 9 Computer Science examinations. Each question includes a detailed explanation for clear understanding of storage concepts.
1. Which of the following is a secondary storage device?
Answer: b) Hard Disk
Explanation: Hard disk is a secondary storage device used to store large amounts of data permanently.
Explanation: Hard disk is a secondary storage device used to store large amounts of data permanently.
2. Which memory is volatile?
Answer: c) RAM
Explanation: RAM is volatile memory. Data stored in it is lost when power is switched off.
Explanation: RAM is volatile memory. Data stored in it is lost when power is switched off.
3. ROM stands for:
Answer: b) Read Only Memory
Explanation: ROM stores permanent instructions required to start the computer.
Explanation: ROM stores permanent instructions required to start the computer.
4. Which device is portable and commonly used to transfer data?
Answer: b) Pen Drive
Explanation: Pen drives are small, portable USB storage devices used to transfer files easily.
Explanation: Pen drives are small, portable USB storage devices used to transfer files easily.
5. Which storage device uses magnetic technology?
Answer: c) Hard Disk
Explanation: Hard disks store data magnetically on rotating platters.
Explanation: Hard disks store data magnetically on rotating platters.
6. Which memory is non-volatile?
Answer: c) ROM
Explanation: Non-volatile memory retains data even after power is turned off.
Explanation: Non-volatile memory retains data even after power is turned off.
7. CD and DVD are examples of:
Answer: b) Optical storage
Explanation: CDs and DVDs use laser technology to read and write data.
Explanation: CDs and DVDs use laser technology to read and write data.
8. SSD stands for:
Answer: a) Solid State Drive
Explanation: SSD is a fast storage device that uses flash memory instead of magnetic disks.
Explanation: SSD is a fast storage device that uses flash memory instead of magnetic disks.
9. Which memory is fastest?
Answer: c) Cache
Explanation: Cache memory provides high-speed data access to the CPU.
Explanation: Cache memory provides high-speed data access to the CPU.
10. Primary memory includes:
Answer: a) RAM and ROM
Explanation: Primary memory is directly accessible by the CPU and includes RAM and ROM.
Explanation: Primary memory is directly accessible by the CPU and includes RAM and ROM.
11. Which storage device has larger capacity?
Answer: c) Hard Disk
Explanation: Hard disks store much more data compared to CDs and DVDs.
Explanation: Hard disks store much more data compared to CDs and DVDs.
12. Floppy disk is an example of:
Answer: b) Magnetic storage
Explanation: Floppy disks store data magnetically.
Explanation: Floppy disks store data magnetically.
13. Which is used for backup storage?
Answer: b) Pen Drive
Explanation: Pen drives are commonly used to back up files.
Explanation: Pen drives are commonly used to back up files.
14. Cache memory is located:
Answer: b) Inside CPU
Explanation: Cache memory is built into or very close to the CPU for faster processing.
Explanation: Cache memory is built into or very close to the CPU for faster processing.
15. Blu-ray is a type of:
Answer: b) Optical storage
Explanation: Blu-ray discs use laser technology for high-capacity data storage.
Explanation: Blu-ray discs use laser technology for high-capacity data storage.
16. Which memory stores BIOS?
Answer: b) ROM
Explanation: BIOS is stored in ROM as it must be available during startup.
Explanation: BIOS is stored in ROM as it must be available during startup.
17. Which is an example of primary memory?
Answer: c) RAM
Explanation: RAM is directly accessed by CPU and is part of primary memory.
Explanation: RAM is directly accessed by CPU and is part of primary memory.
18. Secondary storage is also known as:
Answer: b) External memory
Explanation: Secondary storage is external memory used for permanent storage.
Explanation: Secondary storage is external memory used for permanent storage.
19. Which storage is fastest among these?
Answer: a) SSD
Explanation: SSD is faster than HDD because it has no moving parts.
Explanation: SSD is faster than HDD because it has no moving parts.
20. Storage devices are used to:
Answer: c) Store data
Explanation: Storage devices save data and information for future use.
Explanation: Storage devices save data and information for future use.
