Computer Questions

Q:

Computer storage units smallest to largest?

Answer

The smallest unit of data storage in a computer is called Bit (Binary Digit). Half a byte (four bits) is called a Nibble.


 


1 bit (binary digit) = the value of 0 or 1


8 bits = 1 byte


1024 bytes = 1 kilobyte


1024 kilobytes = 1 megabyte


1024 megabytes = 1 gigabyte


1024 gigabytes = 1 terabyte


1024 terabytes = 1 petabyte


 


Hence, Computer storage units smallest to largest i.e, in ascending order is


 1 bit  <  1 byte  <  1 KB  <  1 MB  <  1 GB  <  1TB  <  1 PB.

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9 8146
Q:

Which three parts of the computer receive input?

 

A) MICR, Barcode readers, Touch-screens B) Keyboard, ALU, Printers
C) Keyboard, Mouse, Printers D) Printers, MICR, Touch-screens
 
Answer & Explanation Answer: A) MICR, Barcode readers, Touch-screens

Explanation:

The main function of input devices is to direct commands and data into computers. Computers then use their CPU to process this data and produce output.

 

Examples of input devices - keyboards, mouse, barcode readers, Magnetic Ink Character Readers (MICR), Optical Character Readers (OCR), touch screens, etc...

 

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6 8015
Q:

A person who used his or her expertise to gain access to other people's computers to get information illegally or do damage is a ________

A) spammer B) hacker
C) instant messenger D) programmer
 
Answer & Explanation Answer: B) hacker

Explanation:
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21 7954
Q:

Round robin scheduling falls under the category of

A) Preemptive scheduling B) Non preemptive scheduling
C) Both A & B D) None of the above
 
Answer & Explanation Answer: A) Preemptive scheduling

Explanation:

Round-robin (RR) is one of the algorithms employed by process and network schedulers in computing. It falls under the category of Preemptive scheduling. In computing, the running task is interrupted for some time without requiring its cooperation and resumed later when the priority task has finished its execution. This is called preemptive scheduling. 

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6 7819
Q:

Expansion cards are inserted into

A) Peripheral Devices B) Pegs
C) Slots D) The back of the computer
 
Answer & Explanation Answer: C) Slots

Explanation:

In computing, the expansion card or board or accessory card is a printed circuit board that can be inserted into an electrical connector or expansion slot, on a computer motherboard, to add functionality to a computer system via the expansion bus.

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13 7761
Q:

Which of these is not a means of personal communication on the internet  ?

A) Instant messaging B) Chat
C) Electronic mail D) Instanotes
 
Answer & Explanation Answer: D) Instanotes

Explanation:
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23 7703
Q:

The term computer is derived from

A) Latin language B) Sanskrit language
C) Greek language D) German language
 
Answer & Explanation Answer: A) Latin language

Explanation:

The term computer is derivrd from the latin keyword 'computare' which means to calculate or to compute.

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31 7691
Q:

EPROM can be used for

A) Erasing and reconstructing the contents of ROM B) Duplicating ROM
C) Reconstructing the contents of ROM D) Erasing the contents of ROM
 
Answer & Explanation Answer: A) Erasing and reconstructing the contents of ROM

Explanation:

EPROM stands for Erasable Programmable Read-only Memory.

eprom_can_be_used_for1563542842.jpg image

It is a programmable read-only memory that can be used for erased and re-used.

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11 7648