Data Communication

What is a computer network?

• A combination of devices working together

• A set of computer devices linked together

• A set of computer devices linked together to share resources

• A combination of laptops and desktops connected via some wireless technology

Which of the following is NOT a type of transmission channel?

• Coaxial cable

• Twisted pair

• Modem

• Microwave

Persons at a KFC restaurant realise that they were able to access the internet on their phones. This would be considered a

• MAN

• Hot Spot

• LAN

• Satellite

A LAN is big enough to cover what area?

• A university campus

• A single house

• A single department

• All of the above

An advantage of using a LAN is that?

• The users are at risk of getting a virus

• All the resources can be shared with others

• The network is inexpensive to maintain

• No real advantage

Twisted pair, coaxial cable and fibre optic cable are examples of

• Wired Media

• Wireless Media

• Both wired and wireless

• None of the above

This picture represents

___________ connects computers across a city

Transmissions are possible in both directions simultaneously

This device allows simplex transmission only