A numerous computing systems are connected to each other using various connecting media to communicate so that they are capable of sharing data, hardware, software and computing resources.
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In other words, we can say that a network is a collection of computing machines connected to each other such that they can share data, hardware and other resources. Working over this network is called Networking and the concepts involved in the creation of these networks are called Networking Concepts.
Networks are created using various networking devices which are mentioned:
Hub, Switches, Routers, Cables, Modems etc.
LAN stands for Local Area network which is a computer network small area like office, home, schools or any building.
WAN stands for Wide Area Network, this is network covering a large physical area and is used for communication across nations and cities.
WLAN stands for Wireless Local Area Network is Local area network which is connected without wires and works same as the Local Area network.
Working with protocols
A network basically transfers data from one machine to another and this transfer can’t be carried out without protocols.
Protocols is the array of rules which are to be followed by the machines while communicating over a network. We have some below-mentioned protocols which are mainly used by any network to accomplish their goals:
TCP stands for Transmission Control Protocol and is responsible for the transmission of data. TCP provides the service of exchange of information between two components of a network. This is the protocol which is used by major internet applications like e-mail, file transfer and world wide web. Any data is divided into small packets for transfer over a network, these packets travel in random order and then again arranged in correct order on the destination computer. The collection and arrangement of those packets is the responsibility of TCP.
IP stands for Internet Protocol is a core protocol used for travelling packets across the network. The packets which were mentioned in the earlier paragraph are made travel by Internet Protocol, the way they opt for moving, they reach the correct address and other tasks are carried out by Internet Protocol.
FTP stands for File Transfer Protocol is a standard network protocol used to copy a file from on host to another over a TCP/IP – based network, such as the Internet. FTP is built on a client-server architecture and utilizes separate control and data connections between the client and server. FTP is used with user-based password authentication or with anonymous user access.
SMTP is an Internet Standard for electronic mail (e-mail) transmission across Internet Protocol networks. SMTP was first defined by RFC 821 (STD 10) (1982), and last updated by RFC 532 (2008) which includes the extended SMTP(ESMTP) additions and is the protocol in widespread use today.
SMTP is specific for outgoing mail transport and uses TCP port 25. The protocol for new submissions is effectively the same as SMTP, but it uses port 587 instead.
The Hypertext Transfer Protocol (HTTP) is a networking protocol for distributed, collaborative, hypermedia information system. HTTP is the foundation of data communication for the World Wide Web (WWW).
