The document discusses client-server architecture. In a client-server architecture, clients rely on servers for files, devices, and other network resources. Servers manage these resources and provide them to clients. Common examples of servers include file servers, database servers, web servers, and application servers. Clients are user applications that access and use resources from various servers via communication networks.

4. Client Server Architecture
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5. Definition
The term ‘Client-Server’ refers to the Network
architecture where one or more computers
are connected to a server.
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Client Server Architecture
A network
architecture in which
each computer or
process on the
network is either a
client or a server.

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Components
• Clients
• Servers
• Communication Networks
Client
Server

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• User Applications that run on computers
• Rely on servers for
– Files
– Devices
• Example: E-mail client
– An application that enables us to send
and receive e-mail
Clients

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• Computers that manage network
resources
– Disk drives (file servers)
– Printers (print servers)
– Network traffic (network servers)
• Example: Database Server
– A computer system that processes
database queries
Servers

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Communication Networks
• Networks Connect Clients and
Servers

11. Servers
File Server
• Thick Client
• No hard-disk
• Network dependant
• One-tier architecture
Mainframes
• One Tier (peer-to-peer)
• Talks directly to the mainframe
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12. Servers
Application Server
• LAN (Local Access Network)
• Backbone
• Cluster
• Provides services within the webpage
• Provides online documents
• E.g. Hotmail, Google and Yahoo
Web Server
• Hard ware based
• Network based
• Uses HTTP protocols
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13. Servers
Database Server
Referred to as ‘The back-end system’
• Performs tasks such as data analysis, storage,
data manipulation, archiving
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14. Peer-to-peer Architecture
• Another type of network architecture
is known as a peer-to-peer
architecture because each node has
equivalent responsibilities.
• Both client/server and peer-to-peer
architectures are widely used, and
each has unique advantages and
disadvantages.
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