Correct : B
Explanation: RAM (Random Access Memory) is volatile computer memory that provides high-speed access to data for the CPU. It stores and retrieves data quickly, allowing the system to temporarily hold and access information during operation. It is volatile memory means it store data only when power on, if power off RAM data earsed.
2. A byte consists of
H.P. High Court*
Correct : C
Explanation: A byte consists of 8 bits. Each bit is a binary digit, representing either a 0 or a 1. In computing, a byte is the basic unit of digital information storage and processing, and it can represent 256 different values (2^8) due to its 8-bit structure.
3. Second Generation computers were based on ____
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Correct : C
Explanation: Second-generation computers, developed during the late 1950s to the mid-1960s, were based on transistors. Magnetic core memory was also introduced during this era, further enhancing computer performance. Notable examples of second-generation computers include the IBM 1401 and the IBM 7094.
4. A hybrid computer
Correct : C
Explanation: A hybrid computer is a type of computer system that combines the features of both analog and digital computers. It uses the strengths of analog and digital technologies to perform specific tasks more efficiently.
5. Which type computer uses the 8-bit code called EBCDIC ?
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Correct : C
Explanation: EBCDIC (Extended Binary Coded Decimal Interchange Code) is an 8-bit character encoding used mainly on IBM mainframe and midrange computer systems. A mainframe computer is a high-performance computer used by large organizations for large-scale, compute-intensive tasks.
6. The ALU of a computer responds to the commands comming from
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Correct : B
Explanation: The Arithmetic Logic Unit (ALU) of a computer responds to commands coming from the Control Unit. In a computer's central processing unit (CPU), the Control Unit manages the operations and coordination of various components, including the ALU. It sends control signals to the ALU, specifying the type of operation (arithmetic or logic) to be performed and the operands involved.
7. Which of the following is billionth of a second ?
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Correct : B
Explanation: A billionth of a second is called a "nanosecond" and is commonly abbreviated as "ns." In scientific notation, it is equal to 1×10 -9seconds.
8. ----- Computers operates essentially by counting.
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Correct : D
Explanation: A digital computer is a programmable electronic device that can process numbers and words quickly and accurately. It uses a binary number system with two digits, 1 and 0, to perform tasks.
9. The hardware device commonly referred to as the "brain" of the computer is the _____.
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Correct : C
Explanation: A Central Processing Unit (CPU) is a computer's primary component that acts as its "control center". It's also known as the "central" or "main" processor.
10. The CPU memory are located on the
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Correct : B
Explanation: A motherboard is the main printed circuit board (PCB) in a computer. It's also known as the mainboard, system board, planar board, or logic board. A motherboard is a computer's central communications backbone, connecting all components and external peripherals.
11. Modern Computers are very reliable but they are not
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Correct : C
Explanation :
12. The term gigabyte refers to
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Correct : C
Explanation: A gigabyte (GB) is a multiple of the byte unit for digital information. It's equivalent to 1,024 megabytes (binary) or 1,000 megabytes (decimal). The unit symbol for the gigabyte is GB.
13. Which is considered a direct entry input device ?
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Correct : D
Explanation: An input device is a piece of equipment that is use to provides data to a computer or information appliance. Some examples of input devices include:
Keyboards, Computer mice, Scanners, Cameras, Joysticks, Microphones, Webcams, Light pens.
14. A set of information that defines the status fo resources allocated to a process is
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Correct : D
Explanation: A process description is a set of information that describes the characteristics of a process.
15. Identify the device through which data and instructions are entered into a computer
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Correct : C
Explanation: Input devices are those hardware which is used to give command to computer or any device.
16. Computer Monitor is also known as
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Correct : C
Explanation: A computer monitor is also known as a visual display unit (VDU). A VDU is a computer output device that displays visual images using a cathode ray tube or other technology.
17. CD-ROM is a
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Correct : D
Explanation: A CD-ROM (Compact Disc Read-Only Memory) is a type of compact disc that can read and write. It is used for storage of Secondary memory or secondary storage. Other secondary storage devices include magnetic disks, magnetic tapes etc.
18. Cache memory acts between
H.P. Computer Operator *
Correct : A
Explanation: Cache memory acts as a buffer between the CPU and the main memory (RAM). Cache memory is a type of computer memory that is extremely fast. It holds frequently requested data and instructions so that they are immediately available to the CPU when needed.
19. The time taken for the read/write head to move to the correct track on the magnetic disk is called
H.P. Computer Operator *
Correct : B
Explanation: The time taken for the read/write head to move to the correct track on the magnetic disk is called seek time. Seek time is one of the three components of access time in a disk, along with latency and transfer time.
20. Which is a graphical input device ?
H.P. Computer Operator *
Correct : D
Explanation: A light pen is a computer input device that uses light-sensitive sensors to interact with a computer's display. It's similar to a mouse, but instead of moving the pointer, you point the pen directly at objects on the screen.