Below are the Top 35 Computer Science MCQs For competition Exams 2024:
1➤ The CPU (central processing unit) consists of:
ⓑ input device, output device, and memory store, arithmetic and logic unit, and control unit
ⓒ soft ware, hardware, and power supply unit
ⓓ store, arithmetic and logic units, and control unit.
2➤ State which of the following is an example of volatile memory?
ⓑ RAM
ⓒ RPOM
ⓓ HARD DISK
3➤ When data is entered into a memory location it will?
ⓑ Change the address of the memory location.
ⓒ Erase the previous content
ⓓ Not be fruitful if there is already some data in that location
4➤ ----------- computer is also called desktop and personal computer.
ⓑ mini computers
ⓒ mainframes
ⓓ micro equipment
5➤ Modern computers work on ;
ⓑ decimal numbers.
ⓒ both of these.
ⓓ non of these.
6➤ Modern computers do not work with decimal numbers. Instead they process binary numbers, groups of Os and 1s, because :
ⓑ memory is only possible for binary numbers
ⓒ with decimal numbers, the circuits are complex and costly
ⓓ with with decimal numbers, processing speed is slow.
7➤ The --------- puts data and instructions into primary storage :
ⓑ the control unit
ⓒ secondary storage
ⓓ the ALU
8➤ The device is called the heart of a digital computer.
ⓑ memory unit
ⓒ logic unit
ⓓ visual display unit
9➤ During E-time the ALU ?
ⓑ examines the instruction
ⓒ executes the instruction
ⓓ none of these
10➤ A monitor is an---------- device.
ⓑ output
ⓒ internal
ⓓ non of these
11➤ Each location in binary storage is assigned a unique ?
ⓑ Field
ⓒ Name
ⓓ address
12➤ A keyboard is an --------- device ?
ⓑ output
ⓒ internal
ⓓ non of therse
13➤ Which is not associated with the main memory of computer ?
ⓑ read only memory
ⓒ core memory
ⓓ sequential memory
14➤ ------- is that register which keeps track of the program during execution ?
ⓑ Program counter
ⓒ Data register
ⓓ Accumulator
15➤ A mouse is an--------- device.
ⓑ output
ⓒ internal
ⓓ non of these
16➤ ------- are step-by step instructions that run the computer.
ⓑ documents
ⓒ CPUs
ⓓ programs
17➤ The unit that transforms data into information is the :
ⓑ ROM
ⓒ DVD
ⓓ OCE
18➤ Microprocessor is also called a--------?
ⓑ memory
ⓒ logical chip
ⓓ ROM
19➤ The capacity of computer memory may be expressed in ?
ⓑ bytes
ⓒ bits
ⓓ MHz
20➤ The clock speed of computer is measured in:
ⓑ kilobytes
ⓒ megabytes
ⓓ binary digits
21➤ A bus line consists of ?
ⓑ parallel data paths
ⓒ accumulators
ⓓ machine cycles
22➤ The complex set of electrical circuitry that executes program instructions is called the ?
ⓑ central processing unit
ⓒ hard disk
ⓓ CD ROM
23➤ Temporary storage areas within the CPU are called ?
ⓑ Registers
ⓒ ROMS
ⓓ Addresses
24➤ In a computer system there are tow types of primary memory namely called RAM & ROM.
ⓑ Floppy & Hard Disk
ⓒ RAM & ROM
ⓓ non of these
25➤ The data is first kept in a memory after processing this type of memory is called---------
ⓑ Primary or Main memory
ⓒ both of these
ⓓ non of these
26➤ Read-Only-Memory is also known as:
ⓑ CPU
ⓒ secondary memory
ⓓ non of these
27➤ Hard disks, magnetic tapes, optical storage devices, etc. are examples of:
ⓑ secondary memory.
ⓒ read-only-memory
ⓓ non of these
28➤ The devices that give data and information to the computer are called:
ⓑ output devices.
ⓒ both input and output.
ⓓ non of these
29➤ The devices that take data and information from the computer are called :
ⓑ output devices.
ⓒ both input and output.
ⓓ non of these
30➤ Scanner is an-------- device.
ⓑ output device.
ⓒ both input and output.
ⓓ non of these
31➤ Modem is an ----------- device.
ⓑ output device.
ⓒ both input and output.
ⓓ non of these
32➤ CD ROM is an ------ device.
ⓑ output device.
ⓒ both input and output.
ⓓ non of these
33➤ CD Writer is an -------- device.
ⓑ output device.
ⓒ both input and output.
ⓓ non of these
34➤ Speakers are considered as-------- device.
ⓑ output device:
ⓒ both input and output.
ⓓ non of these
35➤ Soundcard is an example of ---------- device :
ⓑ output device:
ⓒ both input and output.
ⓓ non of these
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