A05-07-Client Server and Peer-to-Peer

ALEVEL-05-07-Client Server and Peer-to-Peer

by Keith Gage

Open Ended

Web forms ask you to enter details

If you don't enter certain details you get an error.

Why is this?

Open Ended

Web forms ask you to enter details

If you don't enter certain details you get an error.

How does the web page know there is an error?

Open Ended

Web forms ask you to enter details

If you don't enter certain details you get an error.

Is this information passed to the server?

Features of a client-server model​

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Features of a peer-to-peer model​

​

Multiple Choice

Which is the following 'client-server' or 'peer-to-peer'

'User passwords are centrally controlled'

• Client-server

• Peer-to-Peer

Multiple Choice

Which is the following 'client-server' or 'peer-to-peer'

'Can be expensive to setup and manage'

• Client-server

• Peer-to-Peer

Multiple Choice

Which is the following 'client-server' or 'peer-to-peer'

'Each computer work as both client and server'

• Client-server

• Peer-to-Peer

Multiple Choice

Which is the following 'client-server' or 'peer-to-peer'

'Can be used for sharing of music or streaming'

• Client-server

• Peer-to-Peer

Multiple Choice

Which is the following 'client-server' or 'peer-to-peer'

'No access to other users files'

• Client-server

• Peer-to-Peer

Open Ended

What are the advantages of client side processing?

​Task

Worksheet 1

Task 1​

Multiple Choice

Client Side Processing - Javascript

Allows more interactivity

by immediately responding to a users actions

• Advantage

• Disadvantage

Multiple Choice

Client Side Processing - Javascript

Quick execution as

no communication with the server is required

• Advantage

• Disadvantage

Multiple Choice

Client Side Processing - Javascript

Not all browsers support all scripts

• Advantage

• Disadvantage

Multiple Choice

Client Side Processing - Javascript

Removes potentially unnecessary

processing from the server

• Advantage

• Disadvantage

Multiple Choice

Client Side Processing - Javascript

Because the scripts are processed on the client

they are dependent upon the performance of the client machine

• Advantage

• Disadvantage

Multiple Choice

Allows for more interactivity by

responding immediately to the users' action

• Advantage

• Disadvantage

Multiple Choice

Not all browsers support all scripts

• Advantage

• Disadvantage

Multiple Choice

Scripts are processed on the client,

and therefore reliant upon the processing ability of the PC

• Advantage

• Disadvantage

Multiple Choice

Quick execution as no

communcation with the server is required

• Advantage

• Disadvantage

Multiple Choice

Remove unnecessary processing from the server

• Advantage

• Disadvantage

Multiple Choice

Different browsers process scripts in slightly different ways

so you cannot guarantee everything is going to work correctly

• Advantage

• Disadvantage

​Task

Worksheet 1

Activity 2

Searching for an item on the Argos Website​

Client or server?​

Multiple Choice

Is this client side processing or server side?

'Web page behaviour'

• Client

• Server

Multiple Choice

Is this client side processing or server side?

'Web page style'

• Client

• Server

Multiple Choice

Is this client side processing or server side?

'Item stock level lookup'

• Client

• Server

Multiple Choice

Is this client side processing or server side?

'Form validation'

• Client

• Server

Multiple Choice

Is this client side processing or server side?

'Loading product information from the database'

• Client

• Server

Client vs server side processing

Client or server?​

Multiple Choice

Is this client side processing or server side?

'Initial validation'

• Client

• Server

Multiple Choice

Is this client side processing or server side?

'Database queries'

• Client

• Server

Multiple Choice

Is this client side processing or server side?

'Applying styles like CSS'

• Client

• Server

Multiple Choice

Is this client side processing or server side?

'Reduces the amount of web traffic'

• Client

• Server

Multiple Choice

Is this client side processing or server side?

'Calculations'

• Client

• Server

Multiple Choice

Is this client side processing or server side?

'Keeps data owned by companies secure'

• Client

• Server

Open Ended

API stands for?