B- Transmitting Data Flashcards
What is meant by bidirectional bus?
It can both transmit and receive data
What is the difference between a serial and parallel connection?
Parallel ports send multiple bits at once whereas serial ports only send one but at a time
What does synchronisation mean?
To match up two devices and to make sure they have the same files
What does bandwidth mean?
The available amount of data transmission capacity
What is a WAN?
A wide area network is made up of LANs to create a network across a big area
How does a VPN work?
It uses the internet to securely connect device together by encrypting the data and masking the users location
Why is a VPN useful?
It helps businesses to securely share data across computer networks
What factors affect the choice of network?
- user experience
- user needs
- specifications
- connectivity
- cost
- compatibility
- implementation
What is Intranet?
A local area network website where access is restricted to internal users
What is Extranet?
And intranet system which can be accessed by authorised external users
What is encrypting?
Converting data into code to avoid being accessed by unauthorised users
