The Tech Storror

Social network A social network is a network of global social networking systems. It is free to join. Users can add members, send messages and update and exchange personal information, as well as a user can join city, work, school and regional networks. Popular social networks Facebook: English Facebook is a global social networking website, which was established on February 4, 2004. It is free to join. - is owned by Facebook Inc. Users can add friends, send messages, and update and share their personal information as well as connect to a user's city, workplace, school, and regional networks. The website is named after the book given by the university administration on the occasion of better communication between students at the beginning of the academic year. Twitter: A social networking and microblogging website where users can share and publish messages of up to 140 characters. These messages are called Tweets. Twitter members' tweets can be seen on their profile pages. Tw

Gateway: Gateway is a medium, which acts as a bridge or bridge between two networks so that many computers can exchange data together. That is, the device used to connect different types of networks is the gateway. It translates the protocol. It works on layer 7 of the OSI model. Switch: Network switch and network hub are the main pillars of computer networking. In networking, a switch is a device that performs filtering and packet forwarding when exchanging data packets between different parts of a local area network. The switch and SI layer operate at the data link layer. But sometimes it also works at network layer. A local area network (LAN) that uses switches to communicate between its different parts is called a switched LAN. Switches are the network layer that additionally processes data (Layer 3) and are often referred to above as Layer 3 switches. The first Ethernet switch was introduced in 1990. Functions of switches: Network switches are switches connected to most modern E

Router: A router is a computer networking device that determines which way data will go through different networks. It is used to connect one network to another network and to route data packets from network to network. In this case the device is called a router. Routers break up broadcast domains in such a way that all devices under a network segment can read and process broadcasts sent for that network segment. A router connects two or more logical subnets. Its network hub does not perform any routing. Rather, it forwards every packet it receives on a network line to other network lines. Routers operate in two different planes: Control plane: Where the router selects the appropriate outgoing interface, which sends specific packets to specific destinations. Forwarding plane: which determines the forwarding of packets received by a logical interface. Initially routers were known as gateways. It was first conceived by the International Networking Group (INWG), an international computer

Data transmission mode The mode of data movement depends on the direction of data movement. Data transmission modes are generally divided into three categories; namely- (i) Simplex mode or unidirectional mode, (ii) Half-duplex mode or meaning duplex mode, (iii) Full-duplex mode or pre-duplex mode or duplex mode. Simplex : The data transmission mode in which data is transmitted only in one direction is called simplex transmission mode. In this method data can be transmitted only in one direction. That is, the sending computer can send data to the receiving computer. But the receiving computer can never send the data to the sending computer. The first computer can only send data to the second computer. But the second computer cannot send data to the first computer. Half Duplex Mode : At this speed data can be sent in both directions but not simultaneously. When the sending computer sends data to the receiving computer, the receiving computer only receives the data. But the sender cannot

Data communication Data communication is the process of transferring any data from one end to another end or from one computer to another computer or from one device to another device or from one person to another. Here, data refers to the electrical form of information stored in a computer. Communicating devices consist of hardware and software for data communication. The performance of data communication system mainly depends on three characteristics. For example: (i) Delivery: The system must deliver the data to the right end. (ii) Accuracy: The system must deliver data accurately. (iii) Timelines: The system must deliver timely data. Main element of data communication and work: A data communication system usually consists of five elements; namely-- (i) Message,  (ii) Source and sender of data,  (iii) Receiver of data,  (iv) Medium,  (v) Protocol (1) Message: The message is what is sent. Messages can be of various types, such as text, image, audio/sound, video etc. (2) Source and se