Networks come in all sizes. They can range from simple networks consisting of two computers to networks connecting millions of devices.
Small home networks :
Small home network connects a few computer to each other and Internet. Simple networks installed in homes enable sharing of resources, such as printers, documents, pictures and music between a few local computers.
Small Office /Home Office :
The small office or Home office or SOHO networks enables computers within a home office or remote office to connect to a corporate network or access centralized, shared resources. Home office networks and small office networks are often set up by individuals that work from a home or a remote office and need to connect to a corporate network or other centralized resources. Additionally, many self-employed entrepreneurs use home office and small office networks to advertise and sell products, order supplies and communicate with customers.
Medium to Large Networks:
Big corporations ,schools have many branches in different location with thousand of interconnected computers. In businesses and large organizations, networks can be used on an even broader scale to provide consolidation, storage, and access to information on network servers. Networks also allow for rapid communication such as email, instant messaging, and collaboration among employees. In addition to internal benefits, many organizations use their networks to provide products and services to customers through their connection to the Internet.
The Internet is the network of networks connects thousand of millions of computer worldwide. The Internet is the largest network in existence. In fact, the term Internet means a ‘network of networks’. The Internet is literally a collection of interconnected private and public networks, such as those described above.