Three centuries before now, each marked by a different domination. The 18th century was dominated by the development of mechanical systems that accompanied the industrial revolution. The 19th century was the age of the steam engine. In the 20th century, radio, television and computer technology played a role for the collection, processing and distribution of information media. The current 21st century or the information-age, where global computer network technology is capable of reaching the entire world, the development of systems and technologies used, the dissemination of information through the internet, the launch of communication satellites and wireless/cellular communication devices marks the beginning of the century. millennium.
Since the introduction of the internet and the marketing of the Windows 95 operating system by Microsoft Inc., connecting several computers, both personal computers (PCs) and servers, with a network of the type of LAN (Local Area Network) has become an easy and common thing.
Understanding Computer Networks
A computer network is an “interconnection” between 2 or more autonomous computers, which are connected by wired or wireless transmission media.
In a computer network, there is a connection system between nodes (computers), namely:
Peer to Peer
Peer means co-workers. Peer To Peer Network is a computer network consisting of several computers, connected directly with a crossover cable or wireless or also with an intermediary hub / switch.
Computers on this Peer To Peer network are usually small with 1-2 printers. For special uses, such as computer laboratories, research and several other things, this peer to peer model can be developed to connect more than 10 to 100 computers.
Client – Server
Client server is using one or more computers as a server that provides its resources to other computers (clients) in the network, the server will regulate the resource access mechanism that may be used, as well as the communication mechanism between nodes in the network.
Clients can only use the resources provided by the server in accordance with the authority granted by the administrator. Applications that run on the client side, could be a resource available on the server. But it can only be run after connecting to the server. In the implementation of application software that is installed on the client side is different from that used on the server.
Types of Client-Server services include:
File Server: Provide file management function service
Print Server: Provides printing function service.
Database Server: Functional processes regarding the database run on this machine and other stations can request service.
DIP (Document Information Processing): Provides services for data storage, management and retrieval functions
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