gcse Flashcards
1
Q
Explain why the TCP/IP model uses layers
A
A layer can be changed and removed without effecting other layers
2
Q
Give two reasons why protocols have layers
A
- Each layer is independent
- One layer can be changed without effecting other layers
3
Q
Definition of layer
A
A davion of network functionality
4
Q
One advantage of using layers to construct network protocols
A
- One layer can be taken out to be changed without effecting other layers
- It is self-contained
5
Q
advantages of star topology
A
- No data collisions can occur
- Cheap
- Reliable as if one device fails then all the others will still work
6
Q
Disadvantages of star topology
A
- the whole network fails if the switch fails
- a wired star topology requires a lot of cable
7
Q
Advantages of a mesh topology
A
- multiple connections mean each node can transmit and receive from more than one node at a time
- New nodes can be added without interrupting other nodes
8
Q
Disadvantages of mesh topology
A
- Many connections require a lot of maintenance
- Hard to set up as high number of connections needed
