Networks Flashcards
1
Q
WAN (Wide Area Network)
A
An area connecting LANs over a large geographical area
2
Q
NIC (Network Interface Card)
A
Formats data from a computer according to the protocols of the network
3
Q
Copper cable
A
- carries electric current
- cheap
- lower bandwidth
4
Q
Fibre optic cable
A
- pulses of light
- more expensive
- higher bandwidth
5
Q
Bandwidth
A
The measure of how much data that can be transferred every second
6
Q
WAP (Wireless Access Point)/ or router
A
Allows wireless devices to connect to a wired network using wifi
7
Q
Wired Network
A
- high bandwidth
- expensive for cabling
- security is good
- not mobile
- no interference
8
Q
Wireless network
A
- low bandwidth
- cheap
- poor security
- signal can be affected by walls or congestion
- very mobile
9
Q
Topology
A
The physical layout of computers on a network.
10
Q
Bus topology
A
- less cable length
- can be set up quickly
- security risks (everyone can see)
- if cable breaks then all will be affected
11
Q
Star topology
A
- Less traffic
- Security is better
- One link fails the rest will work
- Depends on server to be working
- More cable needed
12
Q
IP address
A
A set of numbers used to identify one particular device
13
Q
Domain name
A
The name that identifies a Web site.
14
Q
Packets
A
A small block of data transmitted from one computer to another
15
Q
Header (packets)
A
Contains source and destination
