Computers and IT MCQs
Computer Awareness Questions and Quiz for Banking, IBPS, RRB, RBI, SBI, NABARD examinations of 2024-2025. Computer Awareness MCQs for Competitive Exams. GKToday Computer Awareness for IBPS PO, IBPS Clerk, Bank PO, Bank Clerk and other entrance / competitive examinations.
11. Which of the following is known as the brain of the personal computer?
[A] Control Unit
[B] CPU
[C] ALU
[D] Monitor
Show Answer
Correct Answer: A [Control Unit]
Notes:
Control unit is known as the brain of the computer. The control unit (CU) is a component of a computer’s central processing unit (CPU) that directs the operation of the processor.
12. The most common method of entering text and numerical data into a computer system is through the use of which of the following?
[A] Plotter
[B] Scanner
[C] Printer
[D] Keyboard
Show Answer
Correct Answer: D [Keyboard]
Notes:
The keyboard is used as a text entry interface for typing text and numbers .Keyboard keys typically have characters engraved on them and each press of a key typically corresponds to a single written symbol.
13. What is the use of the wheel located between the two standard buttons on a mouse ?
[A] To click on web pages
[B] To click and select items
[C] To shutdown
[D] To scroll
Show Answer
Correct Answer: D [To scroll]
Notes:
A mouse wheel is a hard plastic or rubbery disc on a computer mouse that is perpendicular to the mouse surface. It is commonly used for easy scrolling up and down through a document.
14. Which of the following is the ability of a system to jump directly to the requested data?
[A] Sequential Access
[B] Random Access
[C] Quick Access
[D] All of the Above
Show Answer
Correct Answer: B [Random Access]
Notes:
Random-access memory is a form of computer data storage that stores data and machine code currently being used. A random-access memory device allows data items to be read or written in almost the same amount of time irrespective of the physical location of data inside the memory.
15. Which of the following parts of the system is most affected by the ESD problem?
[A] Mother Board
[B] Expansion Board
[C] Power Supply
[D] All of the Above
Show Answer
Correct Answer: B [Expansion Board]
Notes:
Expansion board is a printed circuit board that can be inserted into an electrical connector, or expansion slot, on a computer motherboard.
16. Which of the following issues clearly points to the overheating of the system?
[A] Abrupt Shut Downs
[B] Blue Screen Crashes
[C] Freezes
[D] All of the Above
Show Answer
Correct Answer: D [All of the Above]
Notes:
Overheating of a system can be caused by various reasons. Internal issues in the circuit board or failure of cooling mechanism can cause it. Abrupt Shut Down of a system, Blue Screen Crashes, Freezes are some of the issues which shows that system is overheated.
17. Which of the following terms is often used for the programs that are used to find out possible faults in the computer system?
[A] Operating system extensions
[B] Cookies
[C] Diagnostic software
[D] Boot Diskettes
Show Answer
Correct Answer: C [Diagnostic software]
Notes:
A diagnostic program is a computer program sequence that determines the operational status within the software, hardware, or any combination there of in a system.
18. What is the maximum limit of data a Compact Disc can store up to ?
[A] 550 MB
[B] 1000 MB
[C] 750 MB
[D] 1500 MB
Show Answer
Correct Answer: C [750 MB]
Notes:
Compact disc is a digital optical disc data storage device .It was co-developed by Philips and Sony and released in 1982.These have a diameter of 120 millimeters and can hold up to about 80 minutes of uncompressed audio or about 750 MB of data.
19. Which of the following is a display device in which images are produced when an electron beam strikes a phosphorescent surface?
[A] CRT
[B] LCD
[C] LED
[D] All of the Above
Show Answer
Correct Answer: A [CRT]
Notes:
A cathode ray tube (CRT) is a specialized vacuum tube in which images are produced when an electron beam strikes a phosphorescent surface. Most desktop computer displays make use of CRTs.
20. An assembler is a program that converts assembly language into machine code. Which of the following is not a type of assembler ?
[A] One pass
[B] Two pass
[C] Load and Go
[D] Three pass
Show Answer
Correct Answer: D [Three pass]
Notes:
An assembler is a program that translates assembly language into machine language. There are many types of assemblers .Some of them are one pass assembler, two pass assemble, laod and go assembler etc.
