An Overview of Network Devices
The use of network devices is essential for efficient communication over network. In this article, I would like to discuss some network devices that are helpful to mediate date in a network. These networking devices are also knows as network equipment or inter working unit. These devices work in form of unit where destination is called host or date terminal.
OSI Model
Communication on network is not possible without using the architecture of OSI model. The complete name of OSI model is Open System Interconnection Reference Model. It works in form of layered based structure along with network protocol design. It divides network structure into seven layers working from top to bottom. These layers are the Application, Session, Presentation, Network, Data Link, Transport, and Physical Layers. Here I would like to discuss overview of some network devices used in the protocol network design.
Networking Devices:
Gateway: Gateway is the important network node that interacts with such users who perform communication process via different protocols. It is operated on the fourth layer of network model that supports that task of communication to the seventh layer.
Router: It is an essential network device that informs about the network layer where data is being sent. It does have any link with protocols related to network communication operated at the third layer.
Bridge: It is the device that usually connects multiple segment of network to the data link layer.
Switch: It is also an essential network device that connects to certain segments and lines of other network. The basic purpose of switch is to spilt network traffic to different destinations. In addition, switch works on the second layer.
Hub: The hub connects the various segment of Ethernet and performs the role of central point for these segments. With the use of the hub, you can attach your network device to various networks for communication. However, only one computer can transmit the message at a time. The performance of hub is compared based on network topology that gives you basic model structure among other network server. It also gives you a bandwidth range that is shared with other objects and work more efficiently than switches. Hubs give you a dedicated set up between different nodes.
Repeater: The Repeater is usually used to regenerate or amplify signals when you are setting network setup. It works on the first layer of OSI model.
Proxy: It is the service provided by computer network that permits clients to make communication indirectly to other network service providers for services.
Firewall: It is the piece of hardware that prevents communicates from unauthorized source and save your computer from the attack of hackers.
Hardware for dial up or established network connections
Network Card: It is the type of computer hardware that permits attached computer to communicate in form of network.
Modem: It is a network device that converts analog signals to digital information accepted by computer and also demodulates a carrier signal to transmit information. It makes the communication process possible from one computer to another.
Related posts: