Client Server & Peer to Peer Networks

Client Server & Peer to Peer Networks

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RECAP: Networks

A network is 2 or more computers connected together which can communicate

There are 2 types of network:

- Local Area Network (LAN): A network setup over a small geographical area. e.g School or home

- Wide Area Network (WAN): A network setup over a large geographical location, using third party connections. e.g National business or University

RECAP: Topologies

There are two types of network setups (topologies) you need to know:

- Star: All devices are connected via a central hub or switch

- Mesh: All the devices are connected together using multiple connections per device.

RECAP: Protocols

A protocol is an agreed set of rules for how devices should communicate on a network.

There are 8 you need to know:

- - - HTTP, HTTPS, FTP, SMTP, POP, IMAP, TCP, IP

Multiple Choice

What is a network?

• 1 computer

• 2 or more computers connected

• a film

• a server

Multiple Choice

Which network topology would you typically find in most homes?

• Star

• Bus

• Mesh

• WiFi

Multiple Choice

Which topology is this a picture of

• Star

• Bus

• Mesh

• Ring

Open Ended

What is a protocol?

Multiple Choice

What is one of the roles of the client?

• Sends a request to the server.

• Waits for a request

• Sends data back to the client

• Acknowledges requests

Multiple Select

What are the roles of the server?

(tick all that apply).

• Waits for a request from the client.

• Acknowledges a request from the client.

• Requested data is sent back to the client.

• Waits for a reply

• Sends a reply

Multiple Select

What are an advantages of a client-server network?

(tick all that apply)

• Data can be backed up centrally.

• Users can log in from any computer on the network

• Data can be held and organised centrally.

• Cheap to setup

• Requires little administration

Multiple Choice

Which is a disadvantages of a client-server network?

• When server isn't on, clients don't power up

• Clients can't connect wirelessly to the server

• Dependent on server - if it goes down, clients stop working

• Clients are more expensive than servers

Multiple Choice

Which is an advantage of client-server networks?

• Client-server networks are easy to maintain

• Client-server networks are cheap to build

• The client relies on the server

• Clients are kept secure by the server

Multiple Choice

Which of the following is a disadvantage of a peer to peer network?

• If one computer fails it will not disrupt the network.
• There is little or no security which can leave them vulnerable.
• Users can access shared data which is centrally controlled.
• If any part of the network fails, a lot of disruption can occur.

Multiple Choice

What type of network is this?

• Peer-to-peer

• Client-server

Multiple Choice

What type of network is this?

• Peer-to-peer

• Client-server

Open Ended

OCR Supermarkets use a client-server network to connect the checkout computers to the store's server.

Describe two benefits to OCR Supermarkets of using a client-server network instead of a peer-to-peer network. [4 marks]