Networks
By the end of the lesson
You should be able to answer the following question:
Networking Methods
Local and Wide Area Networks
What is the difference?
Which would be more suitable for a corner shop?
Which would be more suitable for Amazon?
Which would be more suitable for McDonald's?
What is a WAN made up of?
Networking Methods
Client/Server Networks
Client/server networks have a central server that connects together all devices in a star topology.
The client will begin all communications asking for information from the server.
The Server will sit and wait for requests.
Networking Methods
Client/Server Networks
Networking Methods
Client/Server Networks
Networking Methods
Peer to Peer Networks
Networking Methods
Peer to Peer Networks
Networking Methods
Virtual Private Networks (VPNs)
Task: In your notebooks, write down everything you remember about VPNs and cloud computing.
Networking Methods
Cloud Computing
Task: Underneath VPNs, write down everything you remember about cloud computing
Implications
| Type of Network | Cost | Security |
|---|---|---|
| Client/ Server | High setup/ maintenance costs. Lots of parts incl. Server and switch. | User IDs, passwords and access levels. Centrally controlled Backup is centralised and usually automated. |
| Peer to Peer | Cheap to set up and maintain | Files and programs saved on individual Computers. Can be used for sharing of music and streaming of live events. |
Implications
| Type of Network | Cost | Security |
|---|---|---|
| VPN | Monthly subscription roughly £10/month | Uses encryption to ensure a secure connection over unsecured internet infrastructures |
| Cloud Computing | Between £5 and £25 per month | Built in backups. Strong security but out of the control of the client |
Exam Question
Networks
By C Achilles
