Data Exchange

Data exchange means ...

• Asking your dentist to send you a reminder card

• Sending a letter to a solicitor

• Passing data between devices

• Sending a message from my brain to my mouth

During 'packet switching' the data is broken down into the following 3 components ...

• Data

• Trailer

• Protocol

• Header

Transmission modes: Using walkie talkies is an example of ...

• Simplex

• Half-duplex

• Full duplex

Transmission modes: Listening to a radio broadcast uses ...

• Simplex

• Half-duplex

• Full duplex

Transmission modes: Talking on the telephone uses ...

• Simplex

• Full duplex

• Half-duplex

In 'Serial transmission', bits of data are ...

• Transferred simultaneously

• One bit at a time

• Ten bits at a time

• One hundred bits at a time

In 'Parallel transmission' bits of data are ...

• Transferred one at a time

• Transferred 10 bits at a time

• Transferred 100 bits at a time

• Transferred simultaneously

Client-side processing takes place on ...

• The web server

• The proxy server

• The web author's pc

• The client's device

Server-side processing takes place on ...

• The web server

• The client's device

• The proxy server

• The browser

Approximately how many geostationary satellites are there in orbit?

• 200

• 40

• 400

• 1000