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Computer Memory PYQs – Computer, SSC & Railway

46 Computer Memory (Computer) questions asked in recent SSC and Railway exams, newest first, with exam, date & shift, answers and solutions.

📚 46 questionsSSC 0 · Railway 46
RRB NTPC UG CBT-1 2025-26 – 18 June 2026 Shift 2 · Primary memory (RAM, ROM and their types)

Q1. RAM and ROM belong to which broader category?

  1. (a) Input devices
  2. (b) Output devices
  3. (c) Processing units
  4. (d) Primary memory
Answer & solution

Answer: (d) Primary memory

Computer Memory Classification
Memory is divided into two main categories:
Primary Memory:Directly accessible by CPU (RAM, ROM, Cache)
Secondary Memory:External storage (Hard disk, SSD, USB)
RAM (Random Access Memory):Volatile, temporary storage
ROM (Read Only Memory):Non-volatile, permanent storage
Both RAM and ROM are directly connected to CPU and form the primary memory system of a computer.
Answer: Option 4 → Primary memory
RRB NTPC UG CBT-1 2025-26 – 16 June 2026 Shift 1 · Secondary storage devices

Q2. Which rewritable optical disc format allows users to erase and update data multiple times?

  1. (a) Central Directory-ReWritable
  2. (b) Computer Disc-ReadWrite
  3. (c) Compact Disc-ReWritable
  4. (d) Controlled Disc-ReWriter
Answer & solution

Answer: (c) Compact Disc-ReWritable

Topic:Optical Storage Media
CD-RW (Compact Disc-ReWritable)is a rewritable optical disc format.
Key Features:
• Allows data to be erased and rewritten multiple times (up to 1000 times)
• Uses phase-change technology to alter disc surface
• Standard capacity: 650-700 MB
Other formats: CD-R (write once), DVD-RW, BD-RE (Blu-ray rewritable)
Answer: Option 3 → Compact Disc-ReWritable
RRB NTPC UG CBT-1 2025-26 – 15 June 2026 Shift 3 · Primary memory (RAM, ROM and their types)

Q3. Consider the following statements regarding RAM and ROM and select the correct option. (i) ROM is faster than RAM because it stores permanent system instructions accessed less frequently by the CPU.(ii) RAM can be read from and written to by the CPU, but its contents are erased when the power is turned off.

  1. (a) (i) True, (ii) True
  2. (b) (i) False, (ii) False
  3. (c) (i) True, (ii) False
  4. (d) (i) False, (ii) True
Answer & solution

Answer: (d) (i) False, (ii) True

RAM vs ROM Analysis
Statement (i): ROM is faster than RAM
FALSE → RAM is significantly faster than ROM
RAM: Random Access Memory (volatile, high-speed)
ROM: Read-Only Memory (non-volatile, slower)
CPU accesses RAM more frequently for active tasks
Statement (ii): RAM characteristics
TRUE → RAM is volatile memory
Can be read from and written to by CPU
Contents are lost when power is turned off
Used for temporary storage during operations
Answer: Option 4 → (i) False, (ii) True
RRB NTPC UG CBT-1 2025-26 – 14 June 2026 Shift 2 · Memory units and conversions

Q4. The basic unit of memory used by a computer to store binary data is called a:

  1. (a) Byte
  2. (b) Bit
  3. (c) Word
  4. (d) Nibble
Answer & solution

Answer: (b) Bit

Topic:Computer Memory Units
Bit (Binary Digit)is the smallest and most basic unit of memory.
It stores a single binary value: either 0 or 1.
Other units are combinations of bits:
• Nibble = 4 bits
• Byte = 8 bits
• Word = Multiple bytes (system-dependent)
Answer: Option 2 → Bit
RRB NTPC UG CBT-1 2025-26 – 13 June 2026 Shift 3 · Memory hierarchy

Q5. Which memory is fastest and located inside the CPU?

  1. (a) Cache L3
  2. (b) Hard disk
  3. (c) Registers
  4. (d) RAM
Answer & solution

Answer: (c) Registers

Topic: Computer Memory Hierarchy
Memory Speed (Fastest to Slowest):
Registers > Cache (L1, L2, L3) > RAM > Hard Disk
Registers:Fastest memory, located inside CPU
Used for immediate data processing
Size: Few bytes to few KB
Cache L3:Fast but slower than registers
RAM:Main memory, outside CPU
Hard Disk:Slowest storage device
Answer: Option 3 → Registers
RRB NTPC UG CBT-1 2025-26 – 9 May 2026 Shift 2 · Cache and virtual memory

Q6. A student notices that arithmetic results appear instantly, but loading data from main memory is slower. Which CPU feature primarily reduces this delay by keeping frequently used data close to the processor?

  1. (a) Cache Memory
  2. (b) Address Decoder
  3. (c) Instruction Set
  4. (d) CPU Fan
Answer & solution

Answer: (a) Cache Memory

Topic: Computer Organization - Memory Hierarchy
Problem: Arithmetic operations are fast, but fetching data from main memory is slow.
Key Concept:
Cache Memory is a small, high-speed memory located between CPU and main memory.
It storesfrequently accessed data and instructionsto reduce memory access time.
Other options:
Address Decoder - selects memory locations (not storage)
Instruction Set - defines CPU operations (not storage)
CPU Fan - cooling device (not related to data access)
Answer: Option 1 → Cache Memory
RRB NTPC UG CBT-1 2025-26 – 8 May 2026 Shift 2 · Cache and virtual memory

Q7. Which memory is fastest and located very close to the CPU?

  1. (a) Hard Disk
  2. (b) Pen Drive
  3. (c) Cache Memory
  4. (d) CD-ROM
Answer & solution

Answer: (c) Cache Memory

Memory Hierarchy (Speed Order):
Fastest → Slowest:
Registers > Cache > RAM > Hard Disk/SSD > Optical Drives
Cache Memory:
• Located inside or very close to CPU
• Stores frequently used data/instructions
• Fastest accessible memory (nanoseconds)
Hard Disk, Pen Drive, CD-ROM are secondary storage
devices — much slower than cache.
Answer: Option 3 → Cache Memory
RRB NTPC UG CBT-1 2025-26 – 8 May 2026 Shift 3 · Secondary storage devices

Q8. Which of the following correctly describes secondary memory?

  1. (a) Faster and more expensive than main memory
  2. (b) Volatile and faster than primary memory
  3. (c) Non-volatile and larger in storage capacity
  4. (d) Volatile and directly accessed by the CPU
Answer & solution

Answer: (c) Non-volatile and larger in storage capacity

Secondary Memory Characteristics:
1.Non-volatile→ Data retained even after power off
2.Larger storage capacity→ GB to TB range
3.Slower than primary memory(RAM)
4.Not directly accessed by CPU→ Data first loaded to RAM
Examples: Hard Disk, SSD, CD, DVD, Pen Drive
Primary Memory (RAM) → Volatile, faster, smaller capacity
Secondary Memory → Non-volatile, slower, larger capacity
Answer: Option 3 → Non-volatile and larger in storage capacity
RRB NTPC UG CBT-1 2025-26 – 7 May 2026 Shift 3 · Primary memory (RAM, ROM and their types)

Q9. Which of the following memory types is non-volatile?

  1. (a) PCB
  2. (b) RAM
  3. (c) CPU
  4. (d) ROM
Answer & solution

Answer: (d) ROM

Topic: Computer Memory Types
Volatile Memory:Loses data when power is off (RAM)
Non-Volatile Memory:Retains data without power (ROM)
ROM (Read-Only Memory) stores permanent data like BIOS
RAM loses all data when system shuts down
PCB is circuit board, CPU is processor - not memory types
Answer: Option 4 → ROM
RRB NTPC UG CBT-1 2025-26 – 7 May 2026 Shift 3 · Primary memory (RAM, ROM and their types)

Q10. Which feature distinguishes ROM from RAM?

  1. (a) ROM is used for storage; RAM is used for graphics.
  2. (b) ROM is faster than RAM.
  3. (c) ROM is volatile; RAM is non-volatile.
  4. (d) ROM stores permanent instructions; RAM stores temporary data.
Answer & solution

Answer: (d) ROM stores permanent instructions; RAM stores temporary data.

ROM vs RAM - Key Distinction
ROM (Read-Only Memory):
• Non-volatile memory
• Stores permanent instructions (BIOS, firmware)
• Data retained even after power off
RAM (Random Access Memory):
• Volatile memory
• Stores temporary data during processing
• Data lost when power is turned off
Answer: Option 4 → ROM stores permanent instructions; RAM stores temporary data.
RRB NTPC GL CBT-1 2025-26 – 25 March 2026 Shift 3 · Primary memory (RAM, ROM and their types)

Q11. Why is RAM called “Random Access”?

  1. (a) Data is permanently stored
  2. (b) Data is stored randomly without structure
  3. (c) Data can only be accessed sequentially
  4. (d) Data can be accessed directly from any location
Answer & solution

Answer: (d) Data can be accessed directly from any location

RAM - Random Access Memory
Random Access means any memory location can be accessed directly in equal time, regardless of its physical position.
Unlike sequential access (tape), RAM allows direct access to any address without reading previous locations.
This direct access capability makes it 'random' - not related to data organization or permanence.
Answer: Option 4 → Data can be accessed directly from any location
RRB NTPC GL CBT-1 2025-26 – 24 March 2026 Shift 1 · Primary memory (RAM, ROM and their types)

Q12. Which type of computer memory loses its stored data when the power supply is turned off?

  1. (a) Magnetic memory set
  2. (b) Optical memory form
  3. (c) Volatile memory type
  4. (d) Non-volatile memory type
Answer & solution

Answer: (c) Volatile memory type

Computer Memory Types:
Volatile Memory:Loses data when power is off.
Examples: RAM (Random Access Memory), Cache memory.
Non-Volatile Memory:Retains data without power.
Examples: ROM, Hard Disk, SSD, Flash drives.
Answer: Option 3 → Volatile memory type
RRB NTPC GL CBT-1 2025-26 – 22 March 2026 Shift 2 · Primary memory (RAM, ROM and their types)

Q13. Which characteristic best differentiates Static RAM (SRAM) from Dynamic RAM (DRAM), leading to SRAM being used for CPU cache and DRAM for main system memory (RAM)?

  1. (a) DRAM is located directly on the CPU die, while SRAM is located on the motherboard.
  2. (b) SRAM requires constant refreshing to hold data, while DRAM does not.
  3. (c) DRAM is non-volatile, while SRAM is volatile.
  4. (d) SRAM is significantly faster, more expensive, and consumes less power than DRAM.
Answer & solution

Answer: (d) SRAM is significantly faster, more expensive, and consumes less power than DRAM.

Topic:SRAM vs DRAM Characteristics
SRAM (Static RAM):
• Uses flip-flop circuits (6 transistors per bit)
• No refresh needed, retains data while powered
• Faster access time, lower latency
• More expensive, larger physical size per bit
• Used in CPU cache (L1, L2, L3)
DRAM (Dynamic RAM):
• Uses capacitor + transistor (1T-1C per bit)
• Requires periodic refresh to maintain data
• Slower than SRAM but higher density
• Cheaper per bit, used for main system RAM
Answer: Option 4 → SRAM is significantly faster, more expensive, and consumes less power than DRAM.
RRB NTPC GL CBT-1 2025-26 – 19 March 2026 Shift 1 · Primary memory (RAM, ROM and their types)

Q14. Data stored on a hard disk must be transferred to which memory unit before the CPU can access it?

  1. (a) Primary memory
  2. (b) Secondary memory
  3. (c) BIOS memory
  4. (d) CD-ROM storage
Answer & solution

Answer: (a) Primary memory

Computer Memory Hierarchy
CPU can only directly accessPrimary Memory (RAM).
Hard disk isSecondary Storage(slower, permanent).
Data flow: Hard Disk → RAM → CPU
RAM acts asintermediate fast-access memory.
Answer: Option 1 → Primary memory
RRB NTPC GL CBT-1 2025-26 – 17 March 2026 Shift 2 · Secondary storage devices

Q15. Major storage media, such as CDs and DVDs, use optical technology, while HDDs rely on _______ technology to store bits.

  1. (a) solid-state memory
  2. (b) magnetic field
  3. (c) liquid crystal
  4. (d) semiconductor chip
Answer & solution

Answer: (b) magnetic field

Storage Technologies:
CDs/DVDs → Useoptical technology(laser reads pits/lands)
HDDs (Hard Disk Drives) → Usemagnetic field technology
Data stored as magnetic patterns on rotating platters .
Read/write heads detect magnetic polarity changes .
Note: Solid-state = SSDs, not HDDs .
Answer: Option 2 → magnetic field
RRB NTPC UG CBT-1 2024-25 – 9 September 2025 Shift 1 · Primary memory (RAM, ROM and their types)

Q16. Which of the following is true for Read-Only Memory (ROM)?

  1. (a) It stores data that can be modified by the user.
  2. (b) It is volatile memory that stores data temporarily.
  3. (c) It processes the logic operations.
  4. (d) It stores the booting instructions permanently.
Answer & solution

Answer: (d) It stores the booting instructions permanently.

RRB NTPC UG CBT-1 2024-25 – 9 September 2025 Shift 3 · Secondary storage devices

Q17. Which of the following is an example of secondary memory?

  1. (a) Cache Memory
  2. (b) RAM
  3. (c) Hard Disk
  4. (d) ROM
Answer & solution

Answer: (c) Hard Disk

RRB NTPC UG CBT-1 2024-25 – 9 September 2025 Shift 3 · Cache and virtual memory

Q18. The primary purpose of the cache memory is to:

  1. (a) display images on screen
  2. (b) store data permanently
  3. (c) increase the speed of data retrieval
  4. (d) store data for later use
Answer & solution

Answer: (c) increase the speed of data retrieval

RRB NTPC UG CBT-1 2024-25 – 8 September 2025 Shift 1 · Primary memory (RAM, ROM and their types)

Q19. Which of the following pairs is correctly matched with both its abbreviation and its function?

  1. (a) PCB – Printed Chip Base – Transfers data from CPU to display
  2. (b) CPU – Central Processing Unit – Stores user files permanently
  3. (c) RAM – Read Access Memory – Runs the operating system even after power is off
  4. (d) ROM – Read Only Memory – Stores boot instructions needed when the computer is powered on
Answer & solution

Answer: (d) ROM – Read Only Memory – Stores boot instructions needed when the computer is powered on

RRB NTPC UG CBT-1 2024-25 – 4 September 2025 Shift 1 · Primary memory (RAM, ROM and their types)

Q20. Which of the following is a primary memory of a computer?

  1. (a) Floppy Disk
  2. (b) RAM
  3. (c) Hard Disk
  4. (d) CD-ROM
Answer & solution

Answer: (b) RAM

RRB NTPC UG CBT-1 2024-25 – 4 September 2025 Shift 2 · Primary memory (RAM, ROM and their types)

Q21. Which statement best differentiates ROM from RAM in terms of volatility and usage?

  1. (a) RAM is permanent; ROM is temporary.
  2. (b) RAM is volatile and stores temporary data; ROM is non-volatile and stores boot instructions.
  3. (c) ROM is volatile and used for running programs; RAM is non-volatile and stores firmware.
  4. (d) ROM is used for multitasking; RAM is used for storing BIOS.
Answer & solution

Answer: (b) RAM is volatile and stores temporary data; ROM is non-volatile and stores boot instructions.

RRB NTPC UG CBT-1 2024-25 – 1 September 2025 Shift 1 · Primary memory (RAM, ROM and their types)

Q22. Which memory is non-volatile, meaning it retains data even after the computer is turned off?

  1. (a) ROM
  2. (b) Virtual Memory
  3. (c) Cache Memory
  4. (d) RAM
Answer & solution

Answer: (a) ROM

RRB NTPC UG CBT-1 2024-25 – 28 August 2025 Shift 2 · Primary memory (RAM, ROM and their types)

Q23. Which of the following correctly differentiates between RAM and ROM?

  1. (a) ROM performs all logical operations, while RAM controls input devices
  2. (b) RAM is permanent memory while ROM is volatile
  3. (c) RAM loses its content when the computer is turned off, while ROM retains its data
  4. (d) ROM is used to store data temporarily during program execution
Answer & solution

Answer: (c) RAM loses its content when the computer is turned off, while ROM retains its data

RRB NTPC UG CBT-1 2024-25 – 14 August 2025 Shift 3 · Primary memory (RAM, ROM and their types)

Q24. Which type of ROM can be programmed only once after manufacturing?

  1. (a) EPROM
  2. (b) Mask ROM
  3. (c) EEPROM
  4. (d) PROM
Answer & solution

Answer: (d) PROM

RRB NTPC UG CBT-1 2024-25 – 12 August 2025 Shift 2 · Primary memory (RAM, ROM and their types)

Q25. Which of the following types of memory is volatile, meaning its contents are lost when the computer is turned off?

  1. (a) Pen Drive
  2. (b) RAM
  3. (c) ROM
  4. (d) Hard Disk
Answer & solution

Answer: (b) RAM

RRB NTPC UG CBT-1 2024-25 – 11 August 2025 Shift 3 · Primary memory (RAM, ROM and their types)

Q26. Which of the following is a characteristic of primary memory in a computer?

  1. (a) It stores data permanently.
  2. (b) It holds data temporarily for quick access during processing.
  3. (c) It is slower than secondary memory.
  4. (d) It is used to back up files externally.
Answer & solution

Answer: (b) It holds data temporarily for quick access during processing.

RRB NTPC UG CBT-1 2024-25 – 8 August 2025 Shift 1 · Primary memory (RAM, ROM and their types)

Q27. What does the abbreviation 'SRAM' stand for in computer memory?

  1. (a) Static Random Access Memory
  2. (b) Static Read Access Memory
  3. (c) Standard Random Access Memory
  4. (d) Synchronous Read Access Memory
Answer & solution

Answer: (a) Static Random Access Memory

RRB NTPC UG CBT-1 2024-25 – 8 August 2025 Shift 2 · Primary memory (RAM, ROM and their types)

Q28. Which type of memory loses all its stored data when the power is turned off?

  1. (a) RAM
  2. (b) ROM
  3. (c) Hard disk drive
  4. (d) USB flash drive
Answer & solution

Answer: (a) RAM

RRB NTPC UG CBT-1 2024-25 – 8 August 2025 Shift 3 · Primary memory (RAM, ROM and their types)

Q29. What is the main function of RAM in a computer?

  1. (a) To control the printer
  2. (b) To provide temporary storage for running programs
  3. (c) To store permanent data
  4. (d) To process graphics
Answer & solution

Answer: (b) To provide temporary storage for running programs

RRB NTPC GL CBT-1 2024-25 – 24 June 2025 Shift 2 · Primary memory (RAM, ROM and their types)

Q30. Which type of memory is non-volatile and is used to store essential system instructions in a computer?

  1. (a) ROM
  2. (b) Cache Memory
  3. (c) RAM
  4. (d) Registers
Answer & solution

Answer: (a) ROM

RRB NTPC GL CBT-1 2024-25 – 24 June 2025 Shift 3 · Primary memory (RAM, ROM and their types)

Q31. Which of the following statements DOES NOT describe the primary difference between SRAM and DRAM in terms of their internal architecture and performance characteristics?

  1. (a) SRAM is faster and more expensive, making it suitable for main system memory, while DRAM is slower and cheaper, making it ideal for Cache memory.
  2. (b) SRAM is much faster because it has a simple design and doesn’t need to refresh data, while DRAM is slower due to the need for periodic refreshes.
  3. (c) SRAM uses more transistors (typically six per cell), which makes it less dense, while DRAM uses just one transistor and one capacitor per cell, making it more compact.
  4. (d) SRAM uses more transistors per bit to store data, providing faster access times compared to DRAM.
Answer & solution

Answer: (a) SRAM is faster and more expensive, making it suitable for main system memory, while DRAM is slower and cheaper, making it ideal for Cache memory.

RRB NTPC GL CBT-1 2024-25 – 21 June 2025 Shift 3 · Secondary storage devices

Q32. Where are files and folders typically stored in a computer?

  1. (a) Keyboard
  2. (b) Monitor
  3. (c) Hard drive
  4. (d) Printer
Answer & solution

Answer: (c) Hard drive

RRB NTPC GL CBT-1 2024-25 – 21 June 2025 Shift 1 · Primary memory (RAM, ROM and their types)

Q33. In the context of computer hardware components, what is the primary function of ROM?

  1. (a) It physically supports all internal hardware modules.
  2. (b) It executes programs and handles arithmetic operations.
  3. (c) It stores temporary data used during system processing.
  4. (d) It holds essential firmware required for booting the system.
Answer & solution

Answer: (d) It holds essential firmware required for booting the system.

RRB NTPC GL CBT-1 2024-25 – 20 June 2025 Shift 1 · Cache and virtual memory

Q34. Which of the following scenarios would most likely result in a 'page fault' error during typical computer operation?

  1. (a) Accessing data stored in the CPU cache
  2. (b) Writing data to a read-only memory location
  3. (c) Attempting to access a memory address that has been swapped out to the hard drive
  4. (d) Executing an instruction directly from the BIOS
Answer & solution

Answer: (c) Attempting to access a memory address that has been swapped out to the hard drive

RRB NTPC GL CBT-1 2024-25 – 18 June 2025 Shift 3 · Secondary storage devices

Q35. Which of the following memory types is also called solid-state storage?

  1. (a) Cache Memory
  2. (b) Crystal Storage
  3. (c) Flash Memory
  4. (d) Primary Memory
Answer & solution

Answer: (c) Flash Memory

RRB NTPC GL CBT-1 2024-25 – 17 June 2025 Shift 2 · Secondary storage devices

Q36. What is the full form of CD, commonly used in storage devices?

  1. (a) Computer Disk
  2. (b) Compact Disc
  3. (c) Circuit Drive
  4. (d) Compact Data
Answer & solution

Answer: (b) Compact Disc

RRB NTPC GL CBT-1 2024-25 – 17 June 2025 Shift 1 · Cache and virtual memory

Q37. Which of the following is an incorrect statement about Cache Memory?

  1. (a) Cache memory is a form of secondary storage.
  2. (b) Cache memory is located close to or inside the CPU.
  3. (c) Cache memory is faster than main memory.
  4. (d) Cache memory stores frequently accessed data for quick retrieval.
Answer & solution

Answer: (a) Cache memory is a form of secondary storage.

RRB NTPC GL CBT-1 2024-25 – 17 June 2025 Shift 3 · Primary memory (RAM, ROM and their types)

Q38. Which of the following abbreviations represents a volatile memory technology commonly used for the primary working memory in personal computers?

  1. (a) SRAM
  2. (b) DRAM
  3. (c) NVMe
  4. (d) CMOS
Answer & solution

Answer: (b) DRAM

RRB NTPC GL CBT-1 2024-25 – 13 June 2025 Shift 2 · Memory hierarchy

Q39. In the context of computer memory hierarchy, which of the following statements regarding access speed and cost per bit is generally true as you move from registers towards secondary storage?

  1. (a) Access speed decreases and cost per bit decreases
  2. (b) Access speed decreases and cost per bit increases.
  3. (c) Access speed increases and cost per bit increases
  4. (d) Access speed increases and cost per bit decreases
Answer & solution

Answer: (a) Access speed decreases and cost per bit decreases

RRB NTPC GL CBT-1 2024-25 – 12 June 2025 Shift 1 · Memory hierarchy

Q40. Which of the following statements about primary and secondary memory is correct in a computer system?

  1. (a) Primary memory is used for long-term storage, while secondary memory is used for temporary storage of data.
  2. (b) Both primary and secondary memory are directly accessible by the CPU for processing instructions.
  3. (c) Primary memory is faster but has lower storage capacity, while secondary memory is slower but provides large storage capacity.
  4. (d) Secondary memory is volatile, meaning data is lost when power is turned off, while primary memory is non-volatile and retains data.
Answer & solution

Answer: (c) Primary memory is faster but has lower storage capacity, while secondary memory is slower but provides large storage capacity.

RRB NTPC GL CBT-1 2024-25 – 12 June 2025 Shift 3 · Primary memory (RAM, ROM and their types)

Q41. Which of the following statements best describes the role of RAM and ROM in a computer system?

  1. (a) ROM is used for storing data that can be modified and written to, while RAM stores fixed data.
  2. (b) RAM is used to store the operating system and permanent files, while ROM is used to store temporary data.
  3. (c) ROM is used to store system firmware, while RAM stores temporary data for active processes.
  4. (d) RAM is non-volatile, while ROM is volatile.
Answer & solution

Answer: (c) ROM is used to store system firmware, while RAM stores temporary data for active processes.

RRB NTPC GL CBT-1 2024-25 – 11 June 2025 Shift 3 · Primary memory (RAM, ROM and their types)

Q42. Which of the following statements about RAM and ROM with reference to computer memory is correct?

  1. (a) RAM is non-volatile, while ROM is volatile.
  2. (b) RAM cannot be written to, only read from.
  3. (c) ROM is faster than RAM.
  4. (d) RAM temporarily stores data for active programs, while ROM permanently stores firmware.
Answer & solution

Answer: (d) RAM temporarily stores data for active programs, while ROM permanently stores firmware.

RRB NTPC GL CBT-1 2024-25 – 6 June 2025 Shift 2 · Primary memory (RAM, ROM and their types)

Q43. In a multitasking operating system, what role does RAM primarily play when multiple applications are open simultaneously?

  1. (a) It queues printing tasks before they reach the printer.
  2. (b) It temporarily holds active program data and instructions to enable fast switching between tasks.
  3. (c) It acts as permanent storage for installed software.
  4. (d) It processes user input commands from external devices like keyboard or mouse.
Answer & solution

Answer: (b) It temporarily holds active program data and instructions to enable fast switching between tasks.

RRB NTPC GL CBT-1 2024-25 – 5 June 2025 Shift 1 · Cache and virtual memory

Q44. What is the primary purpose of virtual memory in a computer system?

  1. (a) To extend CACHE memory for storage
  2. (b) To provide backup for data
  3. (c) To extend RAM capacity by using disk space
  4. (d) To increase physical storage capacity
Answer & solution

Answer: (c) To extend RAM capacity by using disk space

RRB NTPC GL CBT-1 2024-25 – 5 June 2025 Shift 2 · Cache and virtual memory

Q45. What is the main purpose of cache memory in a computer?

  1. (a) To store frequently accessed data for quick retrieval
  2. (b) To serve as virtual memory
  3. (c) To provide backup for RAM
  4. (d) To permanently store user files
Answer & solution

Answer: (a) To store frequently accessed data for quick retrieval

RRB NTPC GL CBT-1 2024-25 – 5 June 2025 Shift 3 · Primary memory (RAM, ROM and their types)

Q46. What type of memory is used to store data temporarily while a computer is running?

  1. (a) Cache
  2. (b) ROM
  3. (c) Hard Disk
  4. (d) RAM
Answer & solution

Answer: (d) RAM

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