9085413
Description
Mind Map by Brooke Wickham, updated more than 1 year ago
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Created by Brooke Wickham
almost 7 years ago
|
|
Computer
Communications
and Networking
- Network Hardware
- Router / modem
- Connects LAN to WAN
- Connects LAN to WAN
- Hub
- Shares one
signal with
many devices.
- Shares one
signal with
many devices.
- Switch
- Sends data
from one
item to
another
- Sends data
from one
item to
another
- Server
- Controls networks
- Allows log on and stores files
- Controls networks
- Repeater
- Allows
network to
span large
distances.
- Allows
network to
span large
distances.
- Router / modem
- LAN
- Local area network
- A network of
computers in the
same building. This
does not rely on an
internet
connection.
- Local area network
- WAN
- Wide area network
- Created when
LANs are
connected. The
internet is a WAN.
- Wide area network
- Topologies
- BUS: Data flows along main cable.
- Advantages
- Easy to add new
work stations
- Cheaper
- Easy to add new
work stations
- Disadvantages
- If there is a
problem with
the main cable,
the network
stops.
- If there is a
problem with
the main cable,
the network
stops.
- Advantages
- STAR: Each device has
a cable directly to the
main server.
- Advantages
- Reliable
- Reliable
- Disadvantages
- Expensive
- Expensive
- Advantages
- RING: Data token
passes from one PC to
the next.
- Advantages
- No reliance
on central
PC
- No reliance
on central
PC
- Disadvantages
- Harder to add to
- Harder to add to
- Advantages
- BUS: Data flows along main cable.
- Networks
- Advantages
- Share files
- Communication
- Share devices
- Roaming profile
- Share files
- Disadvantages
- Expensive hardware
- Risk of viruses / hacking
- Requires specialist staff
- Expensive hardware
- Advantages
- Created when more than
one device is connected
together. The main purpose
is to share data between
computers.
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