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Objective Questions

Latest KVS PGT Computer Science Exam Question (Objective Questions), MCQ in English

Subjects : Subject Knowledge Test

Question Bank KVS PGT Computer Science Exam Tier 2 - English
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Subject Knowledge Test

Question 1Single Answer
The CPU component that performs arithmetic and logical operations is:
  1. A
    ALU
  2. B
    CU
  3. C
    ROM
  4. D
    RAM
Question 2Single Answer
The main role of the control unit is:
  1. A
    Display images
  2. B
    Direct and coordinate instruction execution
  3. C
    Convert AC to DC
  4. D
    Store permanent files
Question 3Single Answer
The fastest memory among the following is:
  1. A
    CPU register
  2. B
    SSD
  3. C
    Optical disc
  4. D
    Hard disk
Question 4Single Answer
Cache memory primarily reduces:
  1. A
    Screen resolution
  2. B
    Instruction count
  3. C
    Average CPU memory access time
  4. D
    File size
Question 5Single Answer
Volatile primary memory is:
  1. A
    DVD
  2. B
    RAM
  3. C
    ROM
  4. D
    SSD
Question 6Single Answer
Firmware is commonly stored in:
  1. A
    Non-volatile memory
  2. B
    Keyboard buffer only
  3. C
    CPU registers only
  4. D
    Monitor memory
Question 7Single Answer
An example of a pointing input device is:
  1. A
    Projector
  2. B
    Mouse
  3. C
    Printer
  4. D
    Speaker
Question 8Single Answer
An example of an output-only peripheral is:
  1. A
    Printer
  2. B
    Microphone
  3. C
    Keyboard
  4. D
    Scanner
Question 9Single Answer
A scanner primarily converts:
  1. A
    Text to sound
  2. B
    Binary to octal
  3. C
    DC to AC
  4. D
    Physical documents into digital images
Question 10Single Answer
OCR stands for:
  1. A
    Optical Character Recognition
  2. B
    Open Computer Routine
  3. C
    Optical Code Register
  4. D
    Output Character Relay
Question 11Single Answer
The binary digit is called a:
  1. A
    Bit
  2. B
    Word
  3. C
    Nibble
  4. D
    Byte
Question 12Single Answer
A nibble contains:
  1. A
    2 bits
  2. B
    16 bits
  3. C
    4 bits
  4. D
    8 bits
Question 13Single Answer
One byte contains:
  1. A
    8 bits
  2. B
    4 bits
  3. C
    16 bits
  4. D
    32 bits
Question 14Single Answer
A device driver mainly enables:
  1. A
    Spreadsheet calculations
  2. B
    Operating-system communication with hardware
  3. C
    Antivirus license renewal
  4. D
    Programming language translation
Question 15Single Answer
An assembler translates:
  1. A
    Binary to English
  2. B
    Assembly language to machine code
  3. C
    Python to Java
  4. D
    SQL to HTML
Question 16Single Answer
A compiler typically translates:
  1. A
    Hardware into software
  2. B
    RAM into ROM
  3. C
    Source code into target code
  4. D
    Pixels into sound
Question 17Single Answer
An interpreter typically:
  1. A
    Builds network cables
  2. B
    Prints source code
  3. C
    Executes or evaluates source code via an interpreter
  4. D
    Formats hard drives
Question 18Single Answer
A GUI relies primarily on:
  1. A
    Only binary switches
  2. B
    Only punched cards
  3. C
    Only machine instructions
  4. D
    Graphical controls such as windows and icons
Question 19Single Answer
The OS function of deciding which process gets CPU time is:
  1. A
    Optical scanning
  2. B
    File compression
  3. C
    CPU scheduling
  4. D
    Data encryption
Question 20Single Answer
The OS component handling memory allocation performs:
  1. A
    Sound synthesis
  2. B
    Memory management
  3. C
    Firmware soldering
  4. D
    Packet routing only
Question 21Single Answer
A bootloader is used to:
  1. A
    Start loading an operating system
  2. B
    Print a document
  3. C
    Store spreadsheet formulas
  4. D
    Edit a photo
Question 22Single Answer
A process is best described as:
  1. A
    A sector on disk
  2. B
    A program in execution
  3. C
    An unexecuted CPU pin
  4. D
    A monitor cable
Question 23Single Answer
Virtual memory can use:
  1. A
    Only graphics ports
  2. B
    Secondary storage to extend apparent main memory
  3. C
    Only CPU registers
  4. D
    Only ROM instructions
Question 24Single Answer
An SSD generally stores data using:
  1. A
    Magnetic tape
  2. B
    Flash memory
  3. C
    Laser pits only
  4. D
    Vacuum tubes
Question 25Single Answer
An operating system is:
  1. A
    Application data
  2. B
    Programming syntax
  3. C
    System software
  4. D
    Output hardware
Question 26Single Answer
A word processor is:
  1. A
    Assembler
  2. B
    Device driver
  3. C
    BIOS firmware
  4. D
    Application software
Question 27Single Answer
Disk defragmentation is principally relevant to:
  1. A
    Optical sensors
  2. B
    CPU registers
  3. C
    Internet domain names
  4. D
    Magnetic hard disk drives
Question 28Single Answer
Two-factor authentication requires:
  1. A
    Two email addresses only
  2. B
    Two distinct authentication factors
  3. C
    Two usernames only
  4. D
    Two passwords only
Question 29Single Answer
An open-source license primarily determines:
  1. A
    Disk capacity
  2. B
    Permissions and conditions for using and distributing code
  3. C
    Network signal strength
  4. D
    CPU clock rate
Question 30Single Answer
The logical operation with output 1 only if both inputs are 1 is:
  1. A
    OR
  2. B
    XOR
  3. C
    NOR
  4. D
    AND
Question 31Single Answer
The gate producing the complement of AND is:
  1. A
    NAND
  2. B
    NOR
  3. C
    OR
  4. D
    XOR
Question 32Single Answer
XOR produces 1 for two inputs when:
  1. A
    Both inputs are 0
  2. B
    Both inputs are 1
  3. C
    At least one is always 0
  4. D
    The inputs differ
Question 33Single Answer
The gate that outputs 1 only when both inputs are 0 is:
  1. A
    NAND
  2. B
    NOR
  3. C
    OR
  4. D
    XOR
Question 34Single Answer
The Boolean identity A + 0 equals:
  1. A
    1
  2. B
    0
  3. C
    A complement
  4. D
    A
Question 35Single Answer
The Boolean identity A · 1 equals:
  1. A
    A
  2. B
    1
  3. C
    A complement
  4. D
    0
Question 36Single Answer
De Morgan law for NOT(A AND B) is:
  1. A
    A OR B
  2. B
    (NOT A) OR (NOT B)
  3. C
    A XOR B
  4. D
    (NOT A) AND (NOT B)
Question 37Single Answer
De Morgan law for NOT(A OR B) is:
  1. A
    (NOT A) AND (NOT B)
  2. B
    A XOR B
  3. C
    A AND B
  4. D
    (NOT A) OR (NOT B)
Question 38Single Answer
A universal gate is:
  1. A
    NAND
  2. B
    NOT alone
  3. C
    XOR
  4. D
    Buffer
Question 39Single Answer
The largest addressable unit of information in this list is:
  1. A
    Petabyte
  2. B
    Megabyte
  3. C
    Gigabyte
  4. D
    Terabyte
Question 40Single Answer
ASCII is traditionally a:
  1. A
    16-bit-only encoding
  2. B
    7-bit character encoding
  3. C
    64-bit-only encoding
  4. D
    32-bit-only encoding
Question 41Single Answer
Unicode aims to:
  1. A
    Store only English letters
  2. B
    Represent characters from many writing systems
  3. C
    Replace network routing
  4. D
    Compress only audio
Question 42Single Answer
UTF-8 uses:
  1. A
    Variable-length encoding from 1 to 4 bytes
  2. B
    Exactly 2 bytes per character
  3. C
    Exactly 8 bytes per character
  4. D
    Only 7-bit blocks
Question 43Single Answer
UTF-32 normally uses:
  1. A
    Four bytes per code point
  2. B
    Three bits per code point
  3. C
    One bit per code point
  4. D
    One byte per code point
Question 44Single Answer
ISCII was designed mainly for:
  1. A
    Packet switching
  2. B
    Database indexing
  3. C
    Image compression
  4. D
    Indian-script character encoding
Question 45Single Answer
Identify the hexadecimal form of decimal 323.
  1. A
    323
  2. B
    144
  3. C
    143
  4. D
    153
Question 46Single Answer
The base-10 value of hexadecimal 61 equals:
  1. A
    87
  2. B
    107
  3. C
    97
  4. D
    113
Question 47Single Answer
Write decimal 43 in octal.
  1. A
    54
  2. B
    43
  3. C
    53
  4. D
    63
Question 48Single Answer
Evaluate octal 501 as a decimal number.
  1. A
    321
  2. B
    322
  3. C
    313
  4. D
    329
Question 49Single Answer
For integers A=35 and B=22, the bitwise AND result A & B in decimal is:
  1. A
    53
  2. B
    2
  3. C
    55
  4. D
    3
Question 50Single Answer
Calculate 13 XOR 14 (bitwise); give the decimal result.
  1. A
    4
  2. B
    3
  3. C
    15
  4. D
    12
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