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Computer Memory — GK Questions with Answers

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52 questions
  1. Which parameter represents the size of the memory?
    1. Storage capacity
    2. Access mode
    3. Access time
    4. Permanence
    Show answer

    Answer: (A) Storage capacity

    Capacity tells the size of memory, in words or bytes.

  2. Where is data saved permanently?
    1. Memory
    2. Storage
    3. CPU
    4. Printer
    Show answer

    Answer: (B) Storage

    Storage (secondary) is non-volatile.

  3. How many main kinds of memory does a computer have?
    1. Four
    2. Eight
    3. One
    4. Two
    Show answer

    Answer: (D) Two

    Primary and secondary.

  4. How is primary storage compared with secondary?
    1. Slow and inexpensive
    2. Fast and inexpensive
    3. Fast and expensive
    4. Slow and expensive
    Show answer

    Answer: (C) Fast and expensive

    Primary is fast but costly.

  5. The memory that loses its contents when power fails is —
    1. Non-volatile
    2. Volatile
    3. Hard disk
    4. ROM
    Show answer

    Answer: (B) Volatile

    Volatile = temporary.

  6. Cache and main memory lose their contents when power goes. They are —
    1. Dynamic
    2. Static
    3. Volatile
    4. Non-volatile
    Show answer

    Answer: (C) Volatile

    Both are volatile.

  7. Which of these is not an access mode?
    1. Random
    2. Sequential
    3. Continuous
    4. Direct
    Show answer

    Answer: (C) Continuous

    The three modes are random, sequential and direct.

  8. Why is RAM called RAM?
    1. Because it is read-write
    2. Because it is volatile
    3. Because data at any location of the chip can be picked directly
    4. Because it is non-volatile
    Show answer

    Answer: (C) Because data at any location of the chip can be picked directly

    Random access = directly from anywhere.

  9. Which statement is not true about RAM?
    1. It equals hard disk storage
    2. It is a temporary storage area
    3. It is volatile
    4. It is a primary memory
    Show answer

    Answer: (A) It equals hard disk storage

    RAM and a hard disk are different things.

  10. Virtual memory uses hard disk space to supplement which memory?
    1. ROM
    2. EPROM
    3. Registers
    4. RAM
    Show answer

    Answer: (D) RAM

    Virtual memory makes up for a shortage of RAM.

  1. Compared with SRAM, DRAM is —
    1. More power, faster
    2. More power, slower
    3. Less power, slower
    4. Less power, faster
    Show answer

    Answer: (C) Less power, slower

    DRAM is slower and cheaper.

  2. Which memory chip is faster?
    1. No certainty
    2. DRAM
    3. SRAM
    4. RAM
    Show answer

    Answer: (C) SRAM

    SRAM is faster and is used in cache.

  3. What is the advantage of DRAM?
    1. It is cheaper than SRAM
    2. It is faster than SRAM
    3. It stores more data
    4. Its data is hard to erase
    Show answer

    Answer: (A) It is cheaper than SRAM

    The main plus point of DRAM is low cost.

  4. Which is the permanent memory built into the computer?
    1. RAM
    2. ROM
    3. CPU
    4. CD-ROM
    Show answer

    Answer: (B) ROM

    ROM holds the permanent instructions.

  5. On start-up, the CPU is preset to run instructions from which memory?
    1. RAM
    2. Flash memory
    3. ROM
    4. CD-ROM
    Show answer

    Answer: (C) ROM

    The ROM (BIOS) instructions run first.

  6. Which is not a type of ROM?
    1. PROM
    2. EPROM
    3. EEPROM
    4. EDPROM
    Show answer

    Answer: (D) EDPROM

    EDPROM is no ROM.

  7. Which ROM is erased by ultraviolet light?
    1. PROM
    2. EPROM
    3. EEPROM
    4. RAM
    Show answer

    Answer: (B) EPROM

    EPROM = erased by UV.

  8. Which ROM is commonly used to hold the BIOS?
    1. PROM
    2. EPROM
    3. EEPROM
    4. Mask ROM
    Show answer

    Answer: (C) EEPROM

    EEPROM is the most flexible.

  9. Between which parts does cache memory work?
    1. Between the CPU and the RAM
    2. Between the RAM and the ROM
    3. Between the CPU and the hard disk
    4. Between all of these
    Show answer

    Answer: (A) Between the CPU and the RAM

    Cache bridges the speed gap between the CPU and the RAM.

  10. Which statement about cache is true?
    1. Cache is bigger than RAM
    2. Cache is smaller than RAM
    3. ROM is faster than RAM
    4. The user can write into ROM
    Show answer

    Answer: (B) Cache is smaller than RAM

    Cache is costly, hence small.

  1. What is virtual memory?
    1. An extremely large main memory
    2. An extremely large secondary memory
    3. An illusion of an extremely large main memory
    4. A memory used in supercomputers
    Show answer

    Answer: (C) An illusion of an extremely large main memory

    It creates the illusion of more addresses than physically exist.

  2. The ability to “jump” directly to the requested data is called —
    1. Sequential access
    2. Random access
    3. Quick access
    4. All of these
    Show answer

    Answer: (B) Random access

    Reaching directly = random access.

  3. The amount of data a storage device moves to the computer per second is called —
    1. Data migration rate
    2. Data digitising rate
    3. Data transfer rate
    4. Data access rate
    Show answer

    Answer: (C) Data transfer rate

    It is the data transfer rate.

  4. What is the top-level directory of a disk named?
    1. Network
    2. Folder
    3. Root
    4. Program
    Show answer

    Answer: (C) Root

    The root directory holds information about all folders.

  5. The correct statement about secondary storage —
    1. It needs constant power
    2. It has no magnetic media
    3. It has only one type of device
    4. It does not require constant power
    Show answer

    Answer: (D) It does not require constant power

    It is non-volatile.

  6. Secondary storage devices only store data — what can they not do?
    1. Arithmetic operations
    2. Logic operations
    3. Fetch operations
    4. All of these
    Show answer

    Answer: (D) All of these

    The CPU does the computing.

  7. The storage that evens out the difference in data-flow rates between devices is —
    1. Chip
    2. Channel
    3. Floppy
    4. Buffer
    Show answer

    Answer: (D) Buffer

    A buffer is temporary storage.

  8. In which rings is data recorded on a floppy?
    1. Sectors
    2. Tracks
    3. Rounders
    4. Ringers
    Show answer

    Answer: (B) Tracks

    The circular bands are tracks; their pie slices are sectors.

  9. A track position spanning all the platters is known as —
    1. Cylinder
    2. Spindle
    3. Diskette
    4. Platter
    Show answer

    Answer: (A) Cylinder

    Cylinder = the same track across all platters.

  10. The process of dividing a disk into tracks and sectors is —
    1. Tracking
    2. Formatting
    3. Crashing
    4. Allotting
    Show answer

    Answer: (B) Formatting

    This is formatting.

  1. Which of these is an example of magnetic storage?
    1. Zip disk
    2. CD-ROM
    3. DVD
    4. Both zip disk and floppy
    Show answer

    Answer: (D) Both zip disk and floppy

    Zip disk and floppy are magnetic; CD and DVD are optical.

  2. The capacity of a 3.5-inch floppy is —
    1. 1.40 MB
    2. 1.44 GB
    3. 1.40 GB
    4. 1.44 MB
    Show answer

    Answer: (D) 1.44 MB

    1.44 MB.

  3. Which has the smallest storage capacity?
    1. Zip disk
    2. Hard disk
    3. Floppy disk
    4. CD
    Show answer

    Answer: (C) Floppy disk

    A floppy holds very little (1.44 MB).

  4. Full form of FDD —
    1. Floppy Drive Detector
    2. Floppy Drive Demodulator
    3. Floppy Disk Drive
    4. Floppy Demodulator Disc
    Show answer

    Answer: (C) Floppy Disk Drive

    FDD = Floppy Disk Drive.

  5. Which medium gives only sequential access?
    1. Floppy disk
    2. Magnetic disk
    3. Magnetic tape
    4. Optical disc
    Show answer

    Answer: (C) Magnetic tape

    In tape, data comes in order.

  6. Which medium can hold the maximum data?
    1. Optical disc
    2. Floppy disk
    3. Magnetic disk
    4. Magnetic tape
    Show answer

    Answer: (D) Magnetic tape

    Tape holds the most.

  7. Which device is mounted on “reels”?
    1. Floppy disk
    2. Hard disk
    3. Magnetic tape
    4. CD-ROM
    Show answer

    Answer: (C) Magnetic tape

    Tape is on reels.

  8. What can you do on a CD-RW?
    1. Read and write
    2. Only read
    3. Only write
    4. Read, write and rewrite
    Show answer

    Answer: (D) Read, write and rewrite

    RW = ReWritable.

  9. The difference between CD-ROM and CD-RW —
    1. They are the same
    2. Writing is possible on a CD-ROM but not on a CD-RW
    3. A CD-ROM holds more
    4. A CD-RW supports writing, whereas a CD-ROM is read-only
    Show answer

    Answer: (D) A CD-RW supports writing, whereas a CD-ROM is read-only

    ROM = read only; RW = rewritable.

  10. Which disc fits about 650–800 MB, or 74–80 minutes of songs?
    1. Zip disk
    2. CD-ROM
    3. Video card
    4. Floppy diskette
    Show answer

    Answer: (B) CD-ROM

    This is the capacity of a CD-ROM.

  1. Among removable options, which has the largest capacity?
    1. Floppy disk
    2. CD-ROM
    3. DVD
    4. Partitioned space
    Show answer

    Answer: (C) DVD

    A DVD holds 4.7 to 17 GB.

  2. What does DVD stand for?
    1. Digital Video Developer
    2. Digital Video Device
    3. Digital Video Disc
    4. None of these
    Show answer

    Answer: (C) Digital Video Disc

    Digital Video/Versatile Disc.

  3. Which disc is read-only?
    1. DVD-R
    2. DVD-ROM
    3. DVD-RW
    4. CD-R
    Show answer

    Answer: (B) DVD-ROM

    ROM = read only.

  4. The memory used in digital cameras and mobile phones —
    1. Memory card
    2. Pen drive
    3. Blu-ray
    4. Magnetic tape
    Show answer

    Answer: (A) Memory card

    A memory card is small and light.

  5. Which of these is not used for storage?
    1. Floppy disk
    2. Printer
    3. DVD
    4. Hard disk
    Show answer

    Answer: (B) Printer

    The printer is an output device.

  6. Which is not a secondary storage device?
    1. CD
    2. Floppy
    3. Hard disc
    4. RAM
    Show answer

    Answer: (D) RAM

    RAM is primary.

  7. The primary device a computer uses to store information —
    1. TV
    2. Storehouse
    3. Desk
    4. Hard drive
    Show answer

    Answer: (D) Hard drive

    The hard drive is the main storage.

  8. The smallest unit of memory measurement —
    1. Byte
    2. Bit
    3. Nibble
    4. Kilobyte
    Show answer

    Answer: (B) Bit

    Bit = 0 or 1.

  9. What is a set of 4 bits also called?
    1. Nibble
    2. Byte
    3. Kilobyte
    4. Megabyte
    Show answer

    Answer: (A) Nibble

    4 bits = nibble.

  10. The largest number that one byte can hold is —
    1. 2
    2. 255
    3. 256
    4. 1024
    Show answer

    Answer: (B) 255

    8 bits give 256 values (0 to 255).

  11. 1 megabyte equals —
    1. 1000 bytes
    2. 1024 bits
    3. 1024 kilobytes
    4. 2048 bits
    Show answer

    Answer: (C) 1024 kilobytes

    1 MB = 1024 KB.

  12. The correct small-to-large order of units —
    1. PB, KB, MB, GB, TB
    2. KB, MB, TB, PB, GB
    3. MB, TB, GB, KB, PB
    4. KB, MB, GB, TB, PB
    Show answer

    Answer: (D) KB, MB, GB, TB, PB

    K → M → G → T → P.

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