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3. Client-Server Network: advantages and disadvantages All files are stored in a central location A specialist network operating system is needed Network peripherals are controlled centrally The server is expensive to purchase Backups and network security is controlled centrally Specialist staff such as a network manager is needed Users can access shared data which is … Continue reading “Teach ICT – GCSE ICT – network topologies network hardware hubs switches routers repeaters bridges modems WAP network cards”

3. Client-Server Network: advantages and disadvantages

All files are stored in a central location

A specialist network operating system is needed

Network peripherals are controlled centrally

The server is expensive to purchase

Backups and network security is controlled centrally

Specialist staff such as a network manager is needed

Users can access shared data which is centrally controlled

If any part of the network fails a lot of disruption can occur

Challengesee if you can find out one extra fact on this topic that we havent already told you

Click on this link:Client Server Network

Client Server Networks

A Computer networking model where one or more powerful computers (servers) provide the differentcomputernetwork services and all other userof computer network (clients) access those services to perform users tasks is known as client/server computer networking model.

In such networks, there exists a central controller called server. A server is a specialized computer that controls the network resources and provides services to other computers in the network.

All other computers in the network are called clients. A client computer receives the requested services from a server.

A server performs all the major operations like security and network management.

All the clients communicate with each other via centralized server

If client 1 wants to send data to client 2, it first sends request to server to seek permission for it. The server then sends a signal to client 1 allowing it to initiate the communication.

A server is also responsible for managing all the network resources such as files, directories, applications & shared devices likeprinteretc.

If any of the clients wants to access these services, it first seeks permission from the server by sending a request.

Most Local Area Networks are based on client server relationship.

Client-server networking became popular in the late 1980s and early 1990s as many applications were migrated from centralized minicomputers and mainframes to computer networks of persona computers.

The design of applications for a distributed computing environment required that they effetely be divided into two parts: client (front end) and server (back end). The network model on which they were implemented mirrored this client-server model with a users PC (the client) typically acting as the requesting machine and a more powerful server machine to which it was connected via either a LAN or a WAN acting as the supplying machine. It requires special networkingoperating system. It provides user level security and it is more expensive.

Advantages of Client Server Networks

2. Use of dedicated server improves the performance of whole system.

3. Security is better in these networks as all the shared resources are centrally administered.

4. Use of dedicated servers also increases the speed of sharing resources.

Disadvantages of Client Server Networks

1. It requires specialized servers with largememoryand secondary storage. This leads to increase in the cost.

2. The cost of network operating system that manages the various clients is also high.

3. It requires dedicated network administrator.If you liked this article, you can also catch us onfacebookandGoogle+

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Dinesh Thakur holds an B.SC (Computer Science), MCSE, MCDBA, CCNA, CCNP, A+, SCJP certifications. Dinesh authors the hugely popular Computer Notes blog. Where he writes how-to guides around Computer fundamental , computer software, Computer programming, and web apps. For any type of query or something that you think is missing, please feel free to contact us.

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The Definition and Purpose of a Computer Server

Servers Are The Heart and Lungs of the Internet

Servers Are The Heart and Lungs of the Internet

The internet wouldnt exist without servers

A server is a computer designed to process requests and deliver data to another computer over the internet or a local network.

The word server is understood by most to mean aweb serverwhere web pages can be accessed over the internet through a client like a web browser. However, there are several kinds of servers and even local ones like file servers that store data within anintranetnetwork.

Although any computer running special software can function as a server, the most typical use of the word references the very large, high-powered machines that function as the pumps pushing and pulling data from the internet.

Mostcomputer networkssupport one or more servers that handle specialized tasks. As a rule, the larger the network – in terms of clients that connect to it or the amount of data that it moves – the more likely it is that several servers play a role, each dedicated to a specific purpose.

Strictly speaking, the server is thesoftwarethat handles a certain task. However, the powerfulhardwarethat supports this software is also usually called a server because server software coordinating a network of hundreds or thousands of clients requires hardware much more robust than what youd buy for ordinary consumer use.

While some are dedicated servers where the server operates one function only, some implementations might use one server for multiple purposes.

A large, general-purpose network supporting a medium-sized company will likely deploy several different types of servers:

Web servers show pages and run apps through web browsers.

The server your browser is connected to right now is a web server thats delivering this page, any images you might see, etc. The client program, in this case, is most likely a browser like Internet Explorer, Chrome, Firefox, Opera, Safari, etc.

Web servers are used for all sorts of things in addition to delivering simple text and images, like for uploading and backing up files online through acloud storage serviceoronline backup services.

Email servers facilitate the sending and receiving of email messages.

If you have anemail clienton your computer, the software is connecting to anIMAPorPOPemail server to download your messages to your computer, and anSMTPserver to send messages back through the email server.

FTP servers support the moving of files throughFile Transfer Protocoltools.

FTP servers are accessible remotely viaFTP client programs.

Identity servers support logins and security roles for authorized users.

Hundreds of different types of specialized server types support computer networks. Apart from the common corporate types, home users often interface with online game servers, chat servers, audio streaming services, etc.

Many networks on the internet employ aclient-servernetworking model integrating websites and communication services.

An alternative model calledpeer-to-peer networkingallows all devices on a network to function as either a server or client on an as-needed basis.

Peer networks offer a greater degree of privacy because communication between computers is more targeted, but most implementations of peer-to-peer networking arent robust enough to support very large traffic spikes.

The word cluster is used broadly in computer networking to refer to implementations of shared computing resources. Typically, a cluster integrates the resources of two or more computing devices that could otherwise function separately for some common purpose (often a workstation or server devices).

A web server farm is a collection of networked web servers, each with access to content on the same site that functions as a cluster, conceptually.

However, purists debate the technical classification of a server farm as a cluster, depending on the details of the hardware and software configuration.

Because servers are just software, people can run servers at home, accessible only to devices attached to their home network. For example, some network-aware hard drives use theNetwork Attached Storageserver protocol to allow different PCs on the home network to access a shared set of files.

The popular Plexmedia serverhelps users consume digital media on TVs and entertainment devices regardless of whether the media files are on thecloudor on a local PC.

Since uptime is of utmost importance for most servers, they are normally never shut down but instead run 24/7.

However, servers sometimes go down intentionally for scheduled maintenance, which is why some websites and services notify their users of scheduled downtime or scheduled maintenance. Servers might also go down unintentionally during something like aDDoS attack.

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