A computer network refers to the interconnection of computers scattered nearby or far away in such a way that each of them communicates independently with another computer to exchange information or messages.\u00a0 Can provide and share each other’s resources and facilities.\u00a0 These messages or information can be of any type such as Video, Images, Files, and more types.<\/p>\n
Here we have learned, what is a computer network?\u00a0 (What is Computer Network kya hai.) Now we will talk about what is a network?\u00a0 (Network kya hai.) Here we will provide you with complete information about the network so that you do not need to go to any other site and also save your time.<\/p>\n
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What is a network?<\/strong><\/p>\n A network is a group of more than one point, object, or person in such a way that each of them can form a direct\/independent relationship with the other in such a way that it can share information.\u00a0 Each network has a definite purpose.\u00a0 Since it is a group of points\/objects (A group of devices that are connected to each other.) hence the concept of a network is from the computer network.<\/p>\n Points\/objects here mean computers and their group is called a network, computers connected to the network are called nodes in computer terminology\/language except server computers.<\/p>\n If we talk about the real meaning of a computer network, then a computer network connects more than one computer through some communication medium in such a way that they can send and receive their message to others.\u00a0 Computers on a computer network can interact with computers on other networks while in their own network.<\/p>\n Network technical discussions are based on information transfer in three forms \u2013<\/p>\n Voice<\/p>\n Data<\/p>\n Video<\/p>\n Mixing sound, data and video together is a complex task but we can easily mix sound and data.\u00a0 But through today’s technology, the transfer of all three has become an easy task.\u00a0 An example of this is the Internet.\u00a0 The same type of information transfer is quite prevalent in many areas.\u00a0 Mobile phones are more prevalent in voice transfer, they have a very large network.<\/p>\n <\/p>\n The technology of data transmission in the network is called packet switching.\u00a0 The data\/message sent by the user is broken into smaller units, which are called packets.\u00a0 Considering each of these packets separately, it is sent from one Packet Switching Exchange (PSE) to another PSE at its fixed address until the data\/message reaches the fixed address.\u00a0 In this process, the data is checked in each Exchange.<\/p>\n Based on the computers connected to the computer network, they are divided into two parts \u2013<\/p>\n Homogeneous Network<\/p>\n Heterogeneous Network<\/p>\n <\/p>\n elements of network<\/strong><\/p>\n A computer network is a group of different elements.\u00a0 We will learn about the five main ingredients here.<\/p>\n <\/p>\n Server<\/strong><\/p>\n What is the server?\u00a0 A server is a computer program that fulfills the request received from the client, also called a node, through the data stored in its hard disk.\u00a0 If we talk about the real meaning of the server, then the meaning of the server itself is to serve, that is, to fulfill, that is, which fulfills the request of the client.<\/p>\n The server is the main\/central computer of the network, and its capability is superior to all other computers, most or all of the network’s data is stored in the server itself.<\/p>\n It plays an important role in the operation of the network.\u00a0 There are many types of servers such as \u2013 File Server, Database Server, Mail Server, Application Servers, etc.<\/p>\n <\/p>\n Node\/Client<\/strong><\/p>\n All computers\/devices except server computers are called clients.\u00a0 Clients are the computers in which users work. \u00a0Each client has a definite name and identity.\u00a0 Some clients are powerful, often called workstations.\u00a0 The client itself is called a node.<\/p>\n \u00a0<\/strong><\/p>\n \u00a0Network Cable<\/strong><\/p>\n The cables through which computers are connected are called network cables.\u00a0 Information is transferred from one computer to another through network cables.\u00a0 These cables are called buses.<\/p>\n <\/p>\n Network Operating System<\/strong><\/p>\n It is software that is loaded into the server, whose function is to maintain the connection between the computers of the network as well as control the traffic of information.<\/p>\n <\/p>\n Network Card<\/strong><\/p>\n It is a type of circuit that connects network cables to computers.\u00a0 Through these cards, the movement of information or messages takes place at a rapid speed.\u00a0 These cords are placed in the motherboard of each computer connected to the network.\u00a0 It is also called an Ethernet card.<\/p>\n <\/p>\n \u00a0Types of network<\/strong><\/p>\n Networks are divided into several types based on their geographical point of view, three of them (LAN, MAN & WAN) are quite common and main.<\/p>\n <\/p>\n LAN<\/strong><\/p>\n The full form of LAN is the Local Area Network.\u00a0 All the computers in LAN are connected through a communication cable, since they are connected through a cable, so the area of \u200b\u200bthis type of network is not very large, it is spread over a building or a small area.\u00a0 Often they are used in Office or Company.\u00a0 In these, the devices are connected by capable cables in such a way that they can easily exchange information.\u00a0 Their distance is less than 5 Km and the maximum rate of DATA transmission is up to 10 Mbps.\u00a0 At the same time, it has fewer errors than WAN.<\/p>\n <\/p>\n MAN<\/strong><\/p>\n The full form of MAN is Metropolitan Area Network.\u00a0 MAN is such a type of network where many LANs are mixed.\u00a0 MAN is usually a network spread within a city or town and it is larger than LAN but smaller than WAN.\u00a0 The speed of DATA transmission in this network is 10-100 Mbits\/sec.\u00a0 it occurs.\u00a0 These are very expensive networks because fiber optic cables are used to connect computers, which are very expensive cables.\u00a0 Landline service provider companies and cable operators are mainly included in this network.<\/p>\n <\/p>\n WAN<\/strong><\/p>\n The full form of WAN is a Wide Area Network.\u00a0 A WAN is a network in which computers\/devices that exchange information can be physically far apart, this distance can be thousands of kilometers.\u00a0 Only cables don’t need to be used to connect computers in WAN.\u00a0 In this, computers are also connected through Wire and also Wireless.<\/p>\n Can connect with networks of other countries through WAN.\u00a0 In this, fiber optic cables are laid under the sea, or communication satellites are used for the movement of information.\u00a0 In this, the speed of DATA transmission is less due to the longer distance.\u00a0 At the same time, the possibility of errors is also higher in comparison to LAN.<\/p>\n <\/p>\n <\/p>\n What are Network Devices and how many types are there?<\/strong><\/p>\n The ones that are used to increase the power of signals are called Network Devices.\u00a0 At the same time, network devices are used to connect computers among themselves.<\/p>\n <\/p>\n Modem<\/strong><\/p>\n What is a modem?\u00a0 The modem is the sort form of Modulator Demodulator.\u00a0 It works to convert analog signals into digital signals and digital signals into analog signals.\u00a0 It is installed between the telephone line and the computer.<\/p>\n <\/p>\n Modulation<\/strong><\/p>\n The process of converting a digital signal into an analog signal is called modulation.<\/p>\n <\/p>\n Demodulation<\/strong><\/p>\n The process of converting analog signals into digital signals is called demodulation.<\/p>\n <\/p>\n Repeater<\/strong><\/p>\n It is an electronic device that receives low-level signals and sends them back to a high level.\u00a0 The main function of repeaters is to protect the weakened signal and the damage caused by them.\u00a0 Repeaters are used to increase the length of the cable connecting two computers in the network.\u00a0 This is most useful when a long cable is required to connect computers.<\/p>\n <\/p>\n <\/p>\n Hub<\/strong><\/p>\n What is Hub?\u00a0 Hub is used in such places, where all the cables are available in the network.\u00a0 It is a type of repeater, it has ports for connecting network channels.\u00a0 Usually, a port has 4, 8, 16, or 24 ports.<\/p>\n At most 24 computers can be added to a big hub.\u00a0 Another hub can be used to connect more computers than this.\u00a0 It is easy to connect and remove Hubs among themselves.\u00a0 When two or more hubs are joined then it is called Daisy Chain.\u00a0 Hubs works on the physical layer 1 of the OSI model.<\/p>\n The use of Hub is decreasing now because Switch is taking its place.<\/p>\n <\/p>\n Bridge<\/strong><\/p>\n Bridgeworks to connect small networks so that small networks connect and work as a large network.\u00a0 The bridge also does the work of distributing large or busy networks to smaller networks.<\/p>\n <\/p>\n Router<\/strong><\/p>\n The router is used to transfer data packets in the network, this process of data sharing is called routing.\u00a0 Every large network has more than one router.<\/p>\n <\/p>\n Switch<\/strong><\/p>\n This is a type of network device that is used instead of a hub to connect computers.\u00a0 It works to connect the networks of the local area.\u00a0 One main difference between Hub and Switch is that Hubs which are Hubs are called Non-Intelligent devices while Switch is called Intelligent devices.<\/p>\n","protected":false},"excerpt":{"rendered":" A computer network refers to the interconnection of computers scattered nearby or far away in such a way that each of them communicates independently with another computer to exchange information or messages.\u00a0 Can provide and share each other’s resources and facilities.\u00a0 These messages or information can be of any type such as Video, Images, Files, […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2],"tags":[],"class_list":["post-169","post","type-post","status-publish","format-standard","hentry","category-technology","eq-blocks"],"yoast_head":"\n