The Commonly Used Network Equipment

In building a computer network, are also in need of special hardware associated with network needs to be built. Here are some commonly used network equipment to cable-based and wireless networks.

1 . UTP (Unshielded Twisted Pair), is one of the transmission medium used to connect between the computer / network equipment with a computer / network equipment to another by using port RJ45 - Male.

Figure 2.1 UTP cable

2. NIC (Network Interface Card) , is directly related to the equipment and the computer is designed to be a computer - a computer network can communicate with each other. NIC also provides access to the physical network medium . As where the bits of data (such as voltage, current , electromagnetic waves , and other physical quantities) will be formed is determined by the NIC. NIC examples of tools that work on the first screen or the physical screen .

Figure 2.2 NIC

3 . HUB , an equipment which can double the frames of data from one computer to all ports on the hub . So that all the computers are connected to the hub port will receive the data as well .

4. Repeater, is one example of active hub. Repeaters are devices that can receive a signal, then amplify the signal and send it back to the other place. So that the signal can reach places that far because repeaters work on physical quantities such as voltage, electric current, electromagnetic waves, then repeaters are included in the category of equipment that work on the physical screen .

5. Bridge , an equipment that can connect multiple segments within a network. Unlike the hub, a bridge can learn the destination MAC address. So if a computer sends data to a particular computer, the bridge will send the data via the port that is connected to the destination computer only. When the bridge not knowing which ports are connected to the destination computer, then he will try to send a broadcast message to all ports (except the port that sent the computer). after a known destination port then port it to the next only to send the data only . Bridge also can filter traffic between two LAN segments. Bridge work screen Data Link .

 

Figure 2.4 Bridge

6. Router, a network equipment to connect one network to another network. At first glance similar to the bridge router, but the router is more intelligent in comparison with the bridge. Router works using raouting table stored in its memory to make decisions about where and how where the packet is sent. Raouter can decide the best route to be taken by the data packets. Router will determine the preferred physical media networks and are not favored. Raouting protocol can anticipate a variety of conditions that are not owned by the bridge equipment . Routers work at the network screen .

 

Figure 2.5 Router

7. Network Switch, in addition to repeaters, bridges, and routers, there are a number of switching equipment that can be used in building the internetwork. Equipment switches are designed with different goals with repeaters, bridges and routers. If the network device is connected to a LAN too much then it needs increasing transmission capacity that exceeds served by the network transmission media. How it works is similar to a bridge switch. So sometimes referred to as multiple switches and bridges that connect each host will get a full bandwidth. The switch has several advantages in comparison bridge, among others, in terms of packet forwarding methord is passe .

 

Figure 2.6 Switch

8. Geteway work and duty pass packets between networks with different protocols, so the difference is not visible at the application layer. Getway sometimes called ip router. Getway work on the application screen .

9. Modems are used as LAN network connection to the Internet.

Figure 2.7 Modem

10. Access point (AP), is one of the devices that can support the network access without wires or wirelessLAN. Wireless AP device type using radio waves as the transmission medium. The main function of the AP is the central connection. AP can be said to have a function like a switch on the cable network transmisit. AP providing devices such as a radio receiver capable of receiving another wave of another AP or other wireless media , such as USB wireless. In addition, the AP also save the software is able to communicate and encrypt the data, as well as the virtual port to connect to a wired network (wired network).

Hardware specifically for this one I will discuss more fully in the next chapter .

Figure 2.8 AP (Access Point)