R4RIN – MCQs, Mock Tests | Computer Hardware and Networking Computer Hardware MCQ GK Questions Set 1

Any physical components of a computer system that we can see and touch is

1. Software
2. Peripheral device
3. hardware
4. CPU

✅ Correct Answer: 3

The system unit that contains the most vital part of the personal computer is called

1. CPU
2. BIOS chip
3. Motherboard
4. Monitor

✅ Correct Answer: 3

A motherboard consists of

1. CPU
2. RAM and BIOS chip
3. Expansion slots
4. All the above

✅ Correct Answer: 4

Which of the following is considered as the brain of the computer?

1. Motherboard
2. RAM
3. CPU
4. BIOS chip

✅ Correct Answer: 3

Which of the following is primarily responsible for converting input (data) into meaningful output (information)?

1. RAM
2. CPU
3. Storage device
4. Input and Output device

✅ Correct Answer: 2

Central Processing Unit in a computer consists of which major components?

1. Arithmetic logic unit (ALU) and Control Unit
2. Control Unit (CU)
3. Registers
4. ALU, Control Unit, and Registers

✅ Correct Answer: 4

Which of the following component of CPU performs arithmetic operations such as addition, subtraction, division, and multiplication and logic operations such as AND, OR, and NOT?

1. CU
2. ALU
3. Both a and b
4. Register

✅ Correct Answer: 2

Which of the following component of CPU performs arithmetic operations such as addition, subtraction, division, and multiplication and logic operations such as AND, OR, and NOT?

1. CU
2. ALU
3. Both a and b
4. Register

✅ Correct Answer: 2

Which of the following component of CPU controls input/output devices, generate control signals to the other components of the computer such as read and write signals, and performs the execution of instruction?

1. ALU
2. Accumulator
3. Control Unit
4. Both a and c

✅ Correct Answer: 3

Which among the following is the fastest memory in a computer that holds information?

1. Register
2. Cache
3. Main memory
4. RAM

✅ Correct Answer: 1

Which of the following is not hardware?

1. Processor chip
2. Printer
3. Mouse
4. Java

✅ Correct Answer: 4

Which of the following are the predominant manufacturers for desktop and laptop processors?

1. Intel
2. AMD (Advanced Micro Devices)
3. Motorola
4. Both a and b

✅ Correct Answer: 4

Which of the following is temporary storage used to hold data that is used for arithmetic and logical operations and storing its results?

1. ALU
2. PC (Program counter)
3. Accumulator
4. IR (Instruction Register)

✅ Correct Answer: 3

Data moves in and out of the CPU through embedded wires called

1. Bus
2. Electronic wires
3. Lines
4. Cables

✅ Correct Answer: 1

The most common buses inside the microcomputer are

1. Address bus
2. Address bus and Data bus
3. Address bus and Control bus
4. Address bus, Data bus, and Control bus

✅ Correct Answer: 4

Which bus is used to carry data to and from the memory?

1. Address bus hese
2. Data bus
3. Control bus
4. None of the these

✅ Correct Answer: 2

Which register holds the address of the current instruction being executed?

1. Instruction register
2. Memory data register (MDR)
3. Stack register
4. Program counter

✅ Correct Answer: 4

Which register holds the actual instruction being executed currently by the computer?

1. Memory address register (MIR)
2. Instruction register (IR)
3. Memory data register (MDR)
4. Program counter register

✅ Correct Answer: 2

Which register holds the address of a memory location?

1. Memory data register
2. Memory address register
3. Status register
4. Stack address

✅ Correct Answer: 2

Which register shows the results of arithmetic and logical operations such as carry, overflow, negative?

1. Stack register
2. Status register
3. Memory data register
4. Memory buffer

✅ Correct Answer: 2

Which register shows the results of arithmetic and logical operations such as carry, overflow, negative?

1. Stack register
2. Status register
3. Memory data register
4. Memory buffer

✅ Correct Answer: 2

Computer gets the input with the help of

1. mouse and keyboard
2. joystick
3. printer
4. Both a and b

✅ Correct Answer: 4

Which of the following are not input devices?

1. Keyboard, trackball, light pen
2. Barcode reader, OMR, OCR, MICR
3. Biometric sensor, scanner, Mic
4. Plotter, projector, headphones

✅ Correct Answer: 4

Which device is mostly used to enter data or information in a computer system?

1. Touch screen
2. mouse
3. light pen
4. keyboard

✅ Correct Answer: 4

CPU is fabricated on a single integrated circuit board that is known as

1. Motherboard
2. Microprocessor
3. CU
4. ALU

✅ Correct Answer: 4

The main task of the central processing unit is to

1. carry out program instruction
2. carry out program instruction
3. process data and information
4. Both a and c

✅ Correct Answer: 4

Which of the following unit helps to establish the communication between memory and ALU in the computer?

1. CMU
2. CCU
3. CPU
4. None

✅ Correct Answer: 3

Internal memory of central processing unit is nothing but

1. a set of registers
2. a set of ALU and CU
3. buses
4. None

✅ Correct Answer: 1

Which of the following invented the first microprocessor?

1. Vint Cerf
2. Terence Percival
3. John Mauchly
4. Ted Hoff

✅ Correct Answer: 4

The microprocessor consists of millions of

1. registers
2. microchips
3. transistors
4. semiconductors

✅ Correct Answer: 3

The microprocessor of a computer system

1. understand machine language and low-level language
2. understand machine language and high-level language
3. understand only machine language
4. understand only assembly language

✅ Correct Answer: 3

Which memory unit communicates directly with the CPU?

1. Main memory
2. Register
3. Secondary memory
4. Auxiliary memory

✅ Correct Answer: 1

Which memory is used for storing data and program instructions currently being executed by CPU?

1. Mass memory
2. Auxiliary memory
3. Internal memory
4. Non-volatile memory

✅ Correct Answer: 3

Which of the following components remains on the motherboard?

1. CMOS battery
2. PCI slot
3. Case fan
4. All of these

✅ Correct Answer: 4

The read and write operations in the computer is carried out through

1. data bus
2. address bus
3. control bus
4. All of these

✅ Correct Answer: 3

Which of the following key should be pressed to move to the beginning of a line of text?

1. Page up
2. Shift
3. Home
4. Enter

✅ Correct Answer: 3

Which key is used to launch the Start button?

1. Esc
2. Shift
3. Windows
4. Shortcut

✅ Correct Answer: 3

What kind of device is a computer mouse?

1. Input
2. Output
3. Pointing device
4. Both a and c

✅ Correct Answer: 4

Which button is known as a middle button used as the third mouse button?

1. Right button
2. Left button
3. Scroll wheel
4. None of the these

✅ Correct Answer: 3

A joystick is primarily used for which purpose?

1. controlling sound on the screen
2. computer gaming
3. enter text
4. draw pictures

✅ Correct Answer: 2

Which input device moves in all directions, controls the movement of the cursor, and continues moving in the previously pointing direction?

1. Mouse
2. Trackball
3. Joystick
4. Both a and c

✅ Correct Answer: 3

Which of the following input device is a handheld electro-optical pointing device that is used for making drawings, graphics, and for menu selection?

1. Light pen
2. Touch screen
3. Trackball
4. Joystick

✅ Correct Answer: 1

Which input device is mainly used to detect marks on paper?

1. Barcode reader
2. OMR
3. OCR
4. MICR

✅ Correct Answer: 2

Which of the following input device is used for marking attendance of employees/students in organizations/institutions and security purposes?

1. OCR
2. Webcam
3. Biometric sensor
4. Both a and c

✅ Correct Answer: 3

Which input device is widely used for acquiring textual data from images?

1. MICR
2. OCR
3. Scanner
4. Sensor

✅ Correct Answer: 2

Optical Character Recognition is used for the preparation of

1. electricity bills
2. insurance premium
3. telephone bills
4. All of these

✅ Correct Answer: 4

What is the full form of MICR?

1. Magnetic Ink Character Register
2. Magnetic Ink Code Reader
3. Magnetic Ink Code Register (d)
4. Magnetic Ink Code Recognition

✅ Correct Answer: 4

Which input device is used in banks for processing cheques to recognize the magnetic encoding numbers printed at the bottom of a cheque?

1. OCR
2. MICR
3. OMR
4. All of these

✅ Correct Answer: 2

Which of the following is/are the type of smart card reader?

1. Memory card reader
2. Microprocessor card
3. Both a and b
4. None of these

✅ Correct Answer: 3

Which input device is used to recognize the physical or behavioral traits of the individual?

1. Smart card
2. MICR
3. Bar code
4. Biometric sensor

✅ Correct Answer: 4