IARJ24 Formative Assessment: Data Communication System

Full Duplex data flow means:

• data travels in both directions, but only one direction at a time.

• data travels in only one direction.

• data travels in both directions at the same time.

• data does not travel.

The number of layers in ISO OSI reference model is __________

• a) 5

• b) 7

• c) 6

• d) 10

Data is transmitted using light through a(n) _____________cable.

• Fibre Optic
• Coaxial
• Twisted Pair
• Infra-red

Computers send and receive data in the form of ___________________signals.

• Analog
• Modulated
• Demodulated
• Digital

The conversion from digital signals to analog signals and vice versa is called______________.

• Modem/Demodem

• Modulation/Demodulation

• Analoging

• De-Digitizing

This is a standard network protocol for transferring files between a server and client.

• Telenet
• Intranet
• FTP
• Newsgroup

The term 'bandwidth' refers to .

• the amount of data that can be downloaded via radio waves

• the maximum amount of data that can be carried over a network

• the number of minutes you use while online

• the method you use to connect to the Internet

A(n)____________________ is a space station that receives microwave signals from earth.

• network

• satellite

• media

• antenna

A _____ is a device that forwards packets between networks by processing the routing information included in the packet.

• bridge

• router

• firewall

• hub

Satellite, Microwave and Infrared are types of __________________________.

• Transmission protocols

• Transmission media

• Communication modes

• Networks