In the world of computers networking is the practice of connecting two or more computing devices to exchange data. Networks are built using a combination of computer hardware and computer software . Some networking explanations found in books and tutorials are technical in nature and intended for students and professionals, while others are more focused on home and business use of computer networks. Here’s a quick, simplified look at the fundamental concepts of networks.

Types of computer networks

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networks can be classified in several different ways. One method determines the type of network according to the geographic area it covers. Alternatively, networks can also be classified based on topology or the types of protocols they support.

Types of network equipment: Hardware

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Building blocks home computer network include adapters , routers and/or hotspots. Wired (and hybrid wired/wireless) networks also use different types of cables. Finally, large corporate networks in particular often use other advanced equipment for specialized communications purposes.


network cable

ethernet is a physical layer and data link layer technology for local area networks. In homes, schools and offices around the world for connection to personal computers commonly used cables and adapters Ethernet standard .

Wireless Local Area Network (WLAN)

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WiFi is the most popular wireless communication protocol for local area networks. Private home and business networks and public access points use Wi-Fi to connect computers and other wireless devices to each other and to the Internet. Bluetooth is another wireless protocol, commonly used in cell phones and computer peripherals for network communication over short distances.

Internet services

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The technologies used to connect to the internet are different than those used for connecting devices on local area network. Digital subscriber lines (DSL), cable modems, and fiber provide fixed broadband internet service, while WiMax and LTE additionally support mobile connectivity. In geographic areas where these high-speed options are unavailable, subscribers are forced to use older cellular services, satellite, or even dial-up internet instead.

TCP/IP and Other Internet Protocols

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TCP/IP is the primary network protocol of the internet. The acronym refers to Transmission Control Protocol and the Internet Protocol, the two frameworks on which the model is based. A related family of protocols built on top of TCP/IP allows web browsers, email, and many other applications to communicate across networks globally. Applications and computers using TCP/IP identify each other with assigned IP addresses, which are a series of numbers that typically looks like ###.##.###.

Network Routing, Switching, and Bridging

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Most computer networks direct messages from source to destination devices using any of three techniques: routing, switching, and bridging. Routers use certain network address information contained inside messages to send them ahead to their destination (often via other routers). Switches use much of the same technology as routers but typically support local area networks only. Bridging allows messages to flow between two different types of physical networks.

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