Computer Questions and Answers

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(Q1) Computer » History of Computers

Second generation computers can be characterized largely by their use of _________.

A

integrated circuits

B

vacuum tubes

C

microprocessors

D

transistors

Solution

The various generations and their basis are shown as follows:

* First Generation - From 1940 to 1956 was based on Vacuum Tubes

* Second Generation - From 1956 to 1963 was based on Transistors

* Third Generation - From 1964 to 1971 was based on Integrated Circuits

* Fourth Generation - From 1972 to 2010 was based on Microprocessors

* Fifth Generation - From 2010 to present is based on Artificial Intelligence

(Q2) Computer » Shortcut keys

Alt+E is used to _______.

A

To select all text.

B

To copy selected item.

C

To edit options in current program.

D

To paste selected item

Solution

• Alt+E is used to edit options in current program.

• Ctrl + A is used to select all text.

• Ctrl + C is used to copy the selected item.

• Ctrl + V is used to paste the selected item.

(Q3) Computer » Full forms

What is the full form of UPS?

A

Uninterruptible Power Socket

B

Universal Power Supply

C

Uninterruptible Power Supply

D

Uninterruptible Part Supply

(Q4) Computer » Full forms

What is the full form of MPEG?

A

Moving Picture Expert Group

B

Moving Pixel Expert Grid

C

Mix Picture Expert Group

D

Mail Proceed Expert Grid

Solution

• The full form of MPEG is Moving Picture Expert Group.

• Moving Picture Expert Group is a working group of authorities for audio and video compression and transmission. Hiroshi Yasuda established it in 1988.

• The MPEG standards consist of different Parts. Each part covers a certain aspect of the whole specification.

(Q5) Computer » Shortcut keys

Alt+Tab is used to _______.

A

To redo the last action.

B

To undo the last action.

C

To switch between open programs.

D

To create a new document.

Solution

Alt+Tab is a shortcut key most often used to switch between open programs in Microsoft Windows and other operating systems.

• Ctrl+Y shortcut is used to redo the last action.

• Ctrl+Z is a shortcut key most often used to undo.

• Ctrl+N is used to create a new document.

(Q6) Computer » Computer Networking

In the following list of devices, which device is used in data link layer?

A

Repeaters

B

Routers

C

Application gateway

D

Bridge

Solution

A bridge is a device used to connect two separate Ethernet networks into one extended Ethernet.

(Q7) Computer » Input Output Devices

In laser printer which type of laser is used?

A

Dye laser

B

Gas laser

C

Semiconductor laser

D

Excimer laser

Solution

 A laser printer is basically a photocopier. Charge is sprayed onto a semiconducting drum, and the semiconductor laser is used to selectively cause areas to conduct and thus lose their charge.

* The charge is then used to attract toner, which is then transferred to the paper. Finally, a fuser unit melts the toner onto the paper so it doesn't just blow away again.

* It doesn't take much light to activate the semiconductor. Lasers are used because they can be focused on a precise point, not for power.

(Q8) Computer » Computer Architecture

Which of the following is a volatile memory of a computer?

A

Secondary Memory

B

Cache memory

C

RAM

D

ROM

Solution
  • RAM is called'volatile' memory because if the computer loses power, all the data stored in RAM (or other volatile memory) is lost or 'evaporates'.
  • Non-volatile memory is memory that keeps its data while the system isn't running.

(Q9) Computer » Computer Networking

Which of the following is an application protocol?

A

HTTP

B

TCP

C

IP

D

UDP

Solution
  • Hypertext transfer protocol is an application protocol for distributed, collaborative, and hypermedia information systems.
     
  • HTTP is the foundation of data communication for the World Wide Web.

(Q10) Computer » Basic Computer fundamentals

The brain of any computer system is

A

ALU

B

Hard disk

C

CPU

D

Monitor

Solution

The brain of any computer system is CPU. A central processing unit (CPU) is the electronic circuitry within a computer that carries out the instructions of a computer program by performing the basic arithmetic, logical, control and input/output (I/O) operations specified by the instructions.

(Q11) Computer » Basic Computer fundamentals

One kilobit is equal to bits

A

512

B

1000

C

1024

D

1042

(Q12) Computer » Shortcut keys

To find and load a file that has been saved on a computer which of the given options is used ?

A

Select the close command

B

Select the new command

C

Select the save command

D

Select the open command

(Q13) Computer » Input Output Devices

Dot Matrix Printers when compared to Laser Printers are

A

Quieter

B

Faster

C

Less expensive

D

More expensive

(Q14) Computer » Software

CRM in the context of software applications means

A

Customers Relatives Meet

B

Channel Route Market

C

Customer Relationship Management

D

Customer Retention Manager

(Q15) Computer » History of Computers

A Supercomputer would be used for which one of the following applications?

A

Business Computing

B

Desktop Publishing

C

Weather Forecasting

D

Computer Aided Designing

(Q16) Computer » Email

How many types of recipients are there in an email system?

A

Three

B

Four

C

One

D

Two

(Q17) Computer » Computer Architecture

Which one of the following is used as secondary storage system in computer ?

A

RAM

B

EPROM

C

Floppy

D

ROM

(Q18) Computer » Operating Systems

The UNIX operating system is suitable for :

A

Multi user

B

Real Time Processing

C

Distributed Processing

D

Single user

(Q19) Computer » Operating Systems

The IBMDOS is a

A

Single user operating system

B

Multiuser operating system

C

Batch operating system

D

Timesharing operating system

(Q20) Computer » Computer Architecture

The new technology which is emerging in the field of computer is

A

IC technology

B

Parallel processing system

C

Semiconductor technology

D

Transistor technology