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Transmission Media There are three types Of transmission Cable or Media : 1. Coaxial Cable 2. Twisted Pair Cable 2. Fiber Optic Cable 1 Coaxial Cable :                              A Coaxial cable is used in the transmission of audio video all transmission mainly cable cable r us network and broadband cable these cables has hai band with and greater transmission capacity the adjacent figure is of the commonly used kotwal cable 20 tables have a metal mail conductor and that is screwed onto a female conductor. 2 Twisted Pair Cable :                                                    Twisted pay cable is a very important network media which can be used for phone communication and cable ethernet networks twisted pair cable is a type of wire in which two conductor...

PDU in OSI model In telecommunication the term protocol data unit (PDU) has the  following meaning. In a OSI layered model, a unit of data which is specified in a protocol of a given layer and which consists of protocol-control information and possibly user data Of that layer. The PDU for each layer of the OSI model is listed below. Physical layer — raw bits (Is or Os) transmitted physically via the hardware Data Link layer — a frame (or series of bits) Network layer — a packet that contains the source and destination address Transport layer — a segment that includes a TCP header and data Session layer — the data passed to the network connection Presentation layer — the data formatted for presentation Application layer — the data received or transmitted by a software application As you can see, the protocol data unit changes between the seven different layers. The resulting information that is transferred from the application layer to the p...

  Benefits of Networking File sharing             All types of data (Audio, Video, and Images) can be  easily shared  and accessed on network. Resource Sharing            Resources like scanners, printers, network data and         applications can be accessed by remote connection devices,  using  network-connected devices. Example, a application  can be shared by multiple users. Internet Sharing                 A single internet connection can be shared with multiple  users and devices.        Increasing Storage Capacity         Access any types of media files stored remotely on other  computers storage devices (Example NAS) .

Broad network categories There are two broad network categories, 1) Peer-To-Peer(P2P) Networks   -   Peer-To-Peer networks involve two or more  computers pooling individual resources such as disk drives. Each computer acts as both the client and the server, These computers can directly communicate with the other computers. On a peer-to-peer network, for example, a scanner on one computer can be used by any other computer on the network. P2P networks are cheap to set up. Its connection type can be by using Ethernet cable or a Wi-Fi router. 2)  Client-Server Networks -  This involves multiple client networks which are connected to at least a central server on network where, applications are installed.        Clients need access to these server resources, they can access them only from the server. Servers often have private user directories for special users (Example, Windows has Work folders for Special users). Client-se...

Wireless Networks Wireless networks are computer network that are not connected by cables of any kind In simple words. when two or more devices are connected without any networking cable, It is called wireless networking. From cell phone, to simple home wireless internet connection, Bluetooth and more, everything comes under wireless networking. Wireless Networks: Ir DA: Infrared Data Association Data Association has developed a standard where data is transmitted via Infrared light waves It is a protocol where beams are used in the Infrared light s spectrum. In case of Ir DA, as the data transfer is done through infrared, you can send data to one device at a time.   Bluetooth: Bluetooth uses 2.45 gigahertz radio waves to share data between devices. The technology is limited to a short distance of 10 ft but it can cross walls in order to transmit data This also communicates without wire. The figure shows the various Bluetooth versions. Home RF: ...