1. Which produces the best quality graphics reproduction ?
H.P. Computer Operator *
Correct : A
Explanation: A plotter is a computer hardware device that prints vector graphics. It's similar to a printer, but instead of toner, it uses a pen, pencil, or marker to draw continuous lines on paper.
2. The user communicates directly with computer through its peripheral devices is known as
H.P. Computer Operator *
Correct : C
Explanation: When a user communicates directly with a computer through its peripheral devices, it's known as on-line processing.
Online processing is also when a user is connected to a computer or network and is processing data files at the same time as using the input, output, and storage devices.
3. The most frequently used piece of hardware for inputting data is
H.P. Computer Operator *
Correct : C
Explanation: Keyboard is a input device which is used to enter data in computer.
4. To work on computer mainly, we need
H.P. Computer Operator *
Correct : B
Explanation: Hardware is the input and output devices that you can physically touch, like a keyboard, mouse, or display screen.
5. A scanner may have an ADF to feed pages for scanning. What is full fom of ADF ?
JOA-IT 817 *
Correct : D
Explanation: ADF stands for Automatic Document Feeder. It's a feature in scanners, printers, fax machines, and photocopiers that allows users to scan, copy, or print without manually feeding each page into the machine.
6. How many bytes are there in 1 MiB ?
JOA-IT 817 *
Correct : C
Explanation: A mebibyte equals 220 or 1,048,576 bytes.
7. Which of the following is the correct ordering of memory capacity units in increasing order ?
JOA-IT 817 *
Correct : B
Explanation: The ascending order of computer memory units is: Byte, Kilobyte (KB), Megabyte (MB), Gigabyte (GB), Terabyte (TB), Petabyte, Exabyte.
8. The terms 'hit' and 'miss' are associated with which memory ?
JOA-IT 817 *
Correct :
Explanation: In the context of memory, "hit" and "miss" are related to cache memory.
A cache hit occurs when the CPU requests data that is already stored in the cache. This results in a quick retrieval and improved performance.
A cache miss occurs when the requested data is not present in the cache. This leads to a longer access time.
9. Which type of printer contains a fuser assembly ?
JOA-IT 817 *
Correct : C
Explanation: A fuser assembly is a component found in laser printers, photocopiers, and laser fax machines. It uses heat and pressure to fuse toner to the paper.
10. Who among the follwowing invented the CD-ROM ?
JOA-IT 817 *
Correct : D
Explanation: James Russell, an American physicist and music lover, invented the first workable compact disc (CD) in 1966.
11. Who among the following is the inventer of USB ?
JOA-IT 817 *
Correct : A
Explanation :
12. The process of writing data on a CD is also known as ____ data to the CD.
JOA-IT 817 *
Correct : A
Explanation: The process of writing data to a CD is called burning. This is a colloquial term that refers to writing data to a CD, DVD, or other recordable disc. The process is called burning because a laser in the CD-R drive uses heat.
13. What is the unit of frequency ?
JOA-IT 913 *
Correct : C
Explanation: The unit of frequency in the International System of Units (SI) is the hertz (Hz). CPU speed, also known as processor speed, is measured in gigahertz (GHz). A gigahertz is equal to one billion hertz (Hz).
14. What does GPL mean in free software world ?
JOA-IT 913 *
Correct : C
Explanation: GPL stands for GNU General Public License. It's a free software license that guarantees users can use, share, and modify software without paying anyone.
15. FLOPS is a unit to measure the processing speed of computers. What is full form of FLOPS ?
JOA-IT 913 *
Correct : A
Explanation: FLOPS stands for Floating Point Operations Per Second. It's a unit of measurement used to quantify the performance of a computer system, especially in terms of its ability to perform floating-point calculations.
16. ______ is a register in CPU that stores the intermediate result of arithmetic and logic operations.
JOA-IT 913 *
Correct : B
Explanation: The accumulator acts as a temporary storage location for intermediate logical or arithmetic data in multistep calculations. It keeps track of the result of any arithmetic or logic operation.
17. Which is an example of secondary storage device ?
JOA-IT 913 *
Correct : B
Explanation: Pen drive is a compact secondary storage device. It is also known as a USB flash drive, thumb drive or a jump drive. Pen drive is connect to computer through USB port (plug and play).
18. Which of the following memory types has highest speed and minimum latency ?
JOA-IT 913 *
Correct :A
Explanation: Registers are the fastest type of computer data storage. They are located directly on the CPU and can be accessed in a single clock cycle. Cache memory is a small, volatile computer memory that provides fast data access to a processor. It's a temporary storage area that makes data retrieval from a computer's memory more efficient.
19. Cache memory works on the principle of _____.
JOA-IT 913 *
Correct : B
Explanation: Cache memory works on the principle of locality of reference. This principle describes the tendency of a processor to access the same memory locations while running an application.
20. The two cache memory write policies are write-back and _____.