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.
1. A unit of data storage that equals 2 to the 70th power is called?
[A] Zebibyte
[B] Yottabite
[C] Yobibite
[D] None of the above
Show Answer
Correct Answer: A [Zebibyte]
Notes:
A zebibyte is a unit of data storage. It is equal to 2 to the 70th power, or 1,180,591,620,717,411,303,424 bytes. While a zettabyte can be estimated as 10^21 or 1,000,000,000,000,000,000,000 bytes, a zebibyte is exactly 1,180,591,620,717,411,303,424 bytes.
2. A hybrid computer is the one which exhibits the features of __?
[A] analog computer
[B] digital computer
[C] both analog and digital computer
[D] mainframe computer
Show Answer
Correct Answer: C [both analog and digital computer ]
Notes:
Hybrid computers are those computers which exhibit features of both the analog computers and digital computers.
3. One kilobyte has _____?
[A] 1000 bytes
[B] 128 bytes
[C] 1024 bytes
[D] 1036 bytes
Show Answer
Correct Answer: C [1024 bytes]
Notes:
The kilobyte is equal to 1024 bytes (210 B), a common usage. The usage of the metric prefix kilo for binary multiples rose convenient, because 1024 is approximately 1000.
4. Which of the following transforms input data into output data?
[A] Peripherals
[B] RAM
[C] ROM
[D] CPU
Show Answer
Correct Answer: D [CPU]
Notes:
Input data is transformed into output by central processing unit- CPU. It is the electronic circuit in a computer that executes the instructions that make up a program. It performs operations specified by the instructions.
5. As a person working in internet banking environment, why you should be aware of the “Dictionary attack”?
[A] It is used to inject worms or viruses in the system
[B] It is used to determine a password
[C] It is used to access customer’s account by determining other details
[D] It is used for stealing info from the Credit Card
Show Answer
Correct Answer: B [It is used to determine a password ]
Notes:
A dictionary attack is a method of breaking into a password-protected computer or server. It is done by systematically entering every word in a dictionary as a password. A dictionary attack is used as an attempt to decrypt a message or document.
6. What does the amplitude of an analog wave measure?
[A] Frequency
[B] Intensity
[C] Wavelength
[D] All of the above
Show Answer
Correct Answer: B [Intensity]
Notes:
The amplitude of an analog wave is a measure of its intensity which is related to the highest point called crest and the lowest point called trough.
7. What are four basic functional elements of a digital computer?
[A] Input-Output Equipment
[B] Main Memory
[C] Control Unit and ALU
[D] All of the above
Show Answer
Correct Answer: D [All of the above]
Notes:
A digital computer system has four basic functional elements like the input-output equipment, main memory, control unit and the arithmetic logic unit.
8. Who had invented the magnetic card system for program storage?
[A] Pier Giorgio Perotto
[B] Stan Frankel
[C] John Mauchly
[D] Victor Glushkov
Show Answer
Correct Answer: A [Pier Giorgio Perotto]
Notes:
Pier Giorgio Perotto had first developed the magnetic card system for program storage. It is a type of card which can store data by modification of tiny iron-based magnetic particles on a band of magnetic material on a card.
9. What is the full form of ALU?
[A] Arithmetic Logic Unit
[B] Algebra Logic Unit
[C] Arithmetic Logical Unit
[D] None of the Above
Show Answer
Correct Answer: A [Arithmetic Logic Unit]
Notes:
The arithmetic and logic unit (ALU) of a computer system is the place where the actual execution of the instructions take place during the processing operations.
10. What is the full form of SMPS?
[A] Switched-Mode Power Supply
[B] Switching Manual Power Supply
[C] Switched Maintenance Power Supply
[D] None of the Above
Show Answer
Correct Answer: A [Switched-Mode Power Supply]
Notes:
A switched-mode power supply (SMPS) is an electronic circuit that converts power using switching devices. They are used in many places in a computer.
