Basic Computer Knowledge 500 + Questions and Answers

  • 2. The most widely used computer device is.
A.) Solid state disks
B.) External hard disk
C.) Internal hard disk
D.) Mouse

Answer: Option 'C'

Internal hard disk

  • 3. _______ are software which is used to do particular task.
A.) Operating system
B.) Program
C.) Data
D.) Software

Answer: Option 'B'


  • 4. Who is father of modern computers?
A.) Abraham Lincoln
B.) James Gosling
C.) Charles Babbage
D.) Gordon E. Moore

Answer: Option 'C'

Charles Babbage

  • Types of Operating System

    1. A real - time Operating System is a multi tasking Operating System that aims at executing real time applications.
    2. Real - time processing responds to input instantly.
    3. An Operating System which allows multiple users to access a computer system concurrently is known as multi user operating system.
    4. When the Operating System allows the execution of multiple tasks at one time, it is classified as a multi tasking Operating System.
    5. A distributed Operating System manages a group of independent computers and makes them appear to be a single computer.
    6. Embedded Operating Systems are designed to be used in embedded computer systems.
    7. Examples of embedded Operating Systems are Windows 10, UBUNTU and Mac OS X yosemite.
    8. Multi processing Operating System supports running a program on more than one CPU.
    9. Multi threading Operating System allows different parts of a single program to run concurrently.
  • 5. How many generations of computers we have?
A.) 6
B.) 7
C.) 5
D.) 4

Answer: Option 'C'