Latest Computers General Knowledge(GK) Questions and answers

1 .

The box that contains the central electronic components of the computer is the

A)

Motherboard

B)

Input device

C)

System unit

D)

Peripheral

Correct Answer : System unit

It includes the motherboard, CPU, RAM, and other components. The system unit also includes the case that houses the internal components of the computer.

2 .

Instructions and memory address are represented by

A)

binary codes

B)

binary word

C)

character code

D)

None of the above

Correct Answer : binary codes

ASCII code. The American Standard Code for Information Interchange (ASCII), uses a 7-bit binary code to represent text and other characters within computers, communications equipment, and other devices. Each letter or symbol is assigned a number from 0 to 127.

3 .

A ....... is approximately one billion bytes.

A)

kilobyte

B)

megabyte

C)

gigabyte

D)

terabyte

Correct Answer : gigabyte

One gigabyte (GB) is about 1 billion bytes, or 1 thousand megabytes.

4 .

One nibble is equivalent to

A)

2 bits

B)

4 bits

C)

6 bits

D)

8 bits

Correct Answer : 4 bits

A nibble," is a set of four bits. Since there are eight bits in a byte, a nybble is half of one byte. ... Therefore, a nybble is sometimes referred to as a "hex digit." In data communications, nybbles are sometimes called "quadbits," because of the four bits that make up each nybble.

5 .

Storage media such as CD read and wirte information using

A)

magnetic dots

B)

magnetic strips

C)

Both (a) & (b)

D)

a laser beam of red light

Correct Answer : a laser beam of red light

The CD drive shines a laser at the surface of the CD and can detect the reflective areas and the bumps by the amount of laser light they reflect. The drive converts the reflections into 1s and 0s to read digital data from the disc.

6 .

What is the main folder on a storage device

A)

Root directory

B)

Main directory

C)

Device driver

D)

Interface

Correct Answer : Root directory

The root directory is the first or top-most directory in a hierarchy.

7 .

Which of the following statements is / are true ?

A)

ROM are faster than RAM

B)

Cache memories are bigger than RAM

C)

Cache memories are smaller than RAM

D)

Information in ROM can be written by users

Correct Answer : Cache memories are smaller than RAM

8 .

Floppy disks are organised as

A)

heads and folders

B)

files

C)

images

D)

tracks and sectors

Correct Answer : tracks and sectors

In Floppy Disks, information is organized in tracks. Each track is subdivided into sectors and each sector into bytes. The smaller 3.5″ Floppy Disks use 80 tracks per side, 18 sectors per track, and 512 bytes per sector, yielding a capacity of 1.44 MB.

9 .

What part of the computer provides only temporary storage of files ?

A)

ROM memory

B)

RAM memory

C)

Mother board

D)

Hard drive

Correct Answer : RAM memory

Temporary memory in a computer refers to the volatile memory that is stored by a random access memory (RAM) chip. As the name 'temporary' suggests, the memory does not store data for long. When the computer is shut down before saving the data, the data will be lost.

10 .

A permanent memory which holds data and instruction for start-up the computer and does not erase data after the power is off.

A)

CPU

B)

RAM

C)

ROM

D)

None of the above

Correct Answer : ROM