Network Topology Flashcards
1
Q
Physical Topology
A
Layout of the wires in a network
2
Q
Logical Topology
A
How data flows in the network
3
Q
Advantages of a physical bus network
A
- Easy to extend
- Efficient use of cable
- Good for small networks
4
Q
Disadvantages of a physical bus network
A
- Network slows if there is a lot of traffic
- Problems are hard to isolate
- Main cable breaking breaks whole system
- Data collisions occur as data travels both ways
Limited cable length restricts number of devices
5
Q
Advantages of a physical star network
A
- Adding new devices is easy
- Failure of one device does not cause network to fail
- Easy to find faults
- Improved security
6
Q
Disadvantages of a physical star network
A
- If centralised point fails the whole network fails
- Hub can be expensive
- More cable needed
7
Q
Advantages of a physical ring topology
A
- Orderly
- Performs better than a bus network under heavy network load
8
Q
Disadvantages of a physical ring topology
A
- One malfunction creates problems for the whole network
- Moving/ adding/ changing devices causes issues
- Slower than ethernet usually
9
Q
Advantages of a physical mesh topology
A
- Gets rid of traffic problems ad each connection carries its own load
- If one link is unstable system still works
- security advantage
- Fault identification is easy
10
Q
Disadvantages of a physical mesh topology
A
- Lots of cabling and I/O ports needed
- Bulk of wiring can be greater than space you have
- Expensive
11
Q
Hub
A
Data from 1 port is broadcast to all other ports
12
Q
Switch
A
data packets from 1 port are sent to only the destination
13
Q
MAC address
A
- Each networked device a Network Interface Card
- Each NIC has a unique Media Access Control address
- MAC is hardcoded at manufacture
- MAC addresses are 48 bits long
- Written as 12 Hexadecimal digits
