ch-1 class 9th

In Computers, what is the smallest and basic unit of information storage?

• Bit

• Byte

• Newton

• Mega byte

Arrange the following devices in ascending order of the speed: A. RAM B. Hard disk C. Cache D. Floppy

• ABDC

• ABDC

• DBAC

• BADC

where are programs and data to be used by the computer available?

• out put

• processing unit

• input

• storage

'Blue tooth' technology allows -

• Landline phone to mobile phone communication

• Signal transmission on mobile phones only

• Wireless communication between equipments

• Satellite television communication

One byte consists of

• four bits

• one bit

• ten bit

• eight bits

Q. 1024 bytes equals:

• 1 1 KB

• 2 2 MB

• 3 1 GB

• 4 1TB

It involves keeping track of all files

• Process Management

• Memory Management

• File Management

Latest version of windows operating system –

• Windows 8

• Windows 8.1

• Windows 10

What is computer memory?

• Computer memory is a type of keyboard

• Computer memory is a type of monitor

• Computer memory is a physical device that stores data and instructions for the CPU to access quickly.

• Computer memory is a type of printer

Differentiate between primary memory and secondary memory.

• Primary memory is non-volatile and directly accessible by the CPU, while secondary memory is volatile and used for long-term storage.

• Primary memory is volatile and directly accessible by the CPU, while secondary memory is non-volatile and used for long-term storage.

• Primary memory is non-volatile and used for short-term storage, while secondary memory is volatile and used for long-term storage.

• Primary memory is volatile and used for long-term storage, while secondary memory is non-volatile and directly accessible by the CPU.