Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
13 Cards in this Set
- Front
- Back
What is a Network
|
A network is a group of computers connected together
|
|
What does a Network allow computers to do?
|
Communicate Share files Share software Share peripherals |
|
LAN
|
A network which spreads across one geographical site. |
|
WAN
|
A network which spreads across multiple geographical sites. |
|
Hardware to connect a LAN
|
Network cards Cables Server --------------------------------------------- Wireless access points Wireless transmitters/receivers Sever |
|
Hardware to connect WAN
|
Modem to send/receive the data Telephone lines or satellites |
|
Network Security
|
LANs are said to be more secure as they are far less subject to interception A wireless connection is much less secure than a wired connection |
|
Serial Transmission
|
Transmits data between devices one bit at a time down a single wire |
|
Parallel Transmission |
Transmits multiple bits of data using more than one wire
|
|
Simplex
|
Data is only ever sent in one direction |
|
(Full) Duplex |
When data is sent in both directions |
|
Half Duplex |
Data can be passed in both directions but only one direction at a time |
|
Bit rate |
The number of bits that can be sent in one second |