The educational institutions, libraries, hospitals, and industries store the concerned information by

The medium which sends the signal from source to destination is known as

A. transmitter

B. transmission channel

C. receiver

D. hardware

In radio, television and cell phone information is sent either through space in the form of

A. cathode rays

B. electric signals

C. light

D. electromagnet waves

The number of operating computers on internet is

A. nearly 10 million

B. nearly 20 million

C. more than 50 million

D. 30 million

A compact disc (CD) can store computer's data over

A. 420 megabytes

B. 380 megabytes

C. 680 megabytes

D. 560 megabytes

A small storage device that can be used to transport files from one computer to another is called

A. flash drive

B. floppy disk

C. hard disk

D. compact disc