WHAT ARE THE OTHER NETWORK DEVICES?

                          OTHER NETWORK DEVICES

"Aside from the three common communication devices, there are also other devices that help connect through the network."

networking has many components that make it work more efficiently. Devices, when combined, will enable a faster transmission of data. here are the other devices that make up a network.

THE BRIDGE

The bridge is used to divide larger networks into smaller sections. It is also located between two physical network segments and manages the flow of data between the two. By looking at the physical address of the devices connected to each segment, bridges can forward the data if the destination address is on another interface, or block it from crossing if verified that it is on the interface from which it came.

THERE ALSO DIFFERENT TYPES OF BRIDGE

Transparent Bridge - derives its name from the fact that the devices on the network are unaware of its existence. a transparent bridge does nothing except black or forward data based on the mac address.

Source Route Bridge - is used in token ring networks. the source route bridge derives its name from the fact that the entire path to be taken by the packet through the network is embedded within the packet.

Translational Bridge - is used to convert one network data format to another for example from the token ring to ethernet and vice versa.

THE NETWORK CARD

It is also called the Network Interface Card, is a device that enables computers to connect to the network.

To install or configure a network interface, you will need drivers of the device. You might also need to configure it, although many devices are now plug and play. Most network cards are now software configured. Many of these so
ftware configuration utilities also include testing capabilities. The drivers and software configuration utilities supplied with the cards are often not the latest available, so it is best practice to log on the Internet and download the latest drivers and associated software.

THE MODEM

a short for modulator or demodulator, is a device that converts the digital signals generated by a computer into analog signals that can travel over conventional phone lines.

The modem converts the signal back at the receiving end it converts it into a format the computer can understand.

 a modem can be used as a means to connect to an ISP, or as a mechanism for dialing up to a LAN. a modem can also be internal ad in expansion cards or external devices that connect to the serial or USB port of a system. it can also be PCMCIA cards designed for use in laptops or proprietary devices design for use on other devices such as portables and handhelds.

THE TRANSCEIVER

The transceiver is responsible for placing signals onto the network media and detecting incoming signals traveling through the same wire.

The term transceiver does describe a separate network device, but it can also be technology built and embedded in devices such as network cards and modems. In a network environment a transceiver gets its name from being both a transmitter and a receiver of signals does the name transceivers.

It is logical that the technology would found in network cards. Although transceivers are found in network cards, they can be external devices as well. In terms of network transceivers can be shipped as a model or chip type.

CHIP TRANSCEIVER are small and are inserted into a system board or wire directly on a circuit board. MODULE TRANSCEIVER are external to the network and are installed and function similar to other computer peripherals or they can also function as a stand alone devices. 

Several types of the transceivers are RF transceivers, fiber optic transceivers, Ethernet transceivers wireless (WAP) transceivers and more. Each of these media types are different though the function of the transceiver remains the same. Each type of the transceiver used has different characteristics, such as the number of ports available to connect to the network and whether it function as a full duplex communication if supported.

THE FIREWALL

It is a networking device that can be either hardware or software-based. It controls access to your organization's network. This controlled access is designed to protect data and sources from outside the threat. 

A typical firewall is placed at entry or exit points of the network. For example placing a firewall between an internal network and the internet. when in place it control access in and out of that point. The firewall is configured on the server to allow or permit certain type of network traffic. In a small offices and in regular home use a firewall is commonly installed on the local system and configure to control traffic.

Hardware firewalls are used in networks of all sizes today. Hardware firewalls are often dedicated network devices that can be implemented with very little configuration and protect all system behind the firewall from outside sources. Hardware firewalls are readily available and often combined with other devices today. For example, many broadband routers and wireless access points have built-in firewall functionally in such case the router or WAP might have a number of ports available to plug system into.

WHAT IS THE DIFFERENCE BETWEEN HUB, SWITCH AND, ROUTER ?

NETWORK COMMUNICATION DEVICES HUB, SWITCH AND ROUTER

•  Network basics required devices to provide connectivity and functionally. learning this network devices and how they operate our essential in setting up your own network. routers hubs and switches are network device terms that tend to be used interchangeably.
• The functions of the three devices of quite different from one another even though at times they are all integrated into a single device.                                                              
• Each device serves as a central connection for all of your network equipment and handles a data type known as frames a frame carries your data when a frame is received it is amplified and then transmitted onto the port of the destination pc the big difference between frames is in the method in which frames are being delivered.

                             WHAT IS HUB, SWITCH AND ROUTER?

                                    

   WHAT IS A HUB?

 a hub is a simple device that directs data packets to all devices connected to it. Basically I have does nothing except provide a pathway for the electrical signals and regenerate signal before it forwards it to all connected devices.

A message is forwarded along or broadcast to all of the hub's ports. It doesn't matter if the message is only for one port. The hub has no way of determining which port a message should be delivered to. Passing it along to each port guarantees that it reaches its proper destination. These add a lot of traffic to the network, which might lead to slow network response times.

It's 10 or 100 mbps have must share its bond with rich data transfer rate with each and every one of its ports. so when only one pc is broadcasting it will have access to the maximum available bandwidth.b however if multiple pieces are broadcasting that bandwidth will need to be divided among all of those systems which will degrade performance.

                                                                                     WHAT IS A SWITCH?

It is a similar to hubs, switches are the connectivity point of a wired network. Devicesare connected via twisted pair cabling one cable for each device. The difference between the two is on how the devices deal with the data that they receive. If a hub forwards the data it receives to all parts on the device as which forwards the data it receives only to the port that connects to the destination device. 

A switch keeps a record of the mac addresses or the   unique identity of the client devices connected to it. With this information stored in a switch it can identify which system is sitting on which port. Thus, when a message is received it knows exactly which port to send it the different from a hub, 10 or 100 mbps is which will allocate a full 10 or 100 mbps to each of its ports so it does not matter how many pieces transmitting users will always have access to the maximum amount of bandwidth. This is why switch is most considered to be much better choice than a hub. The network result of this measures is that switches can offer significant performance improvements over hub base networks particularly when network use is high.

                   WHAT IS A ROUTER?

Router are completely different devices. If a hub or switch is concerned with transmitting frames, the job of a router, as its name implies, is to route pockets to other networks until that packet ultimately reaches its destination. It can transmit through wired and wireless network. A router is typically connected to at least two networks commonly two local area networks or wide area networks or a LAN and its network internet the service providers network. 

Routers have a WAN port that connects to an internet connection provided by your Internet Service, Provider, the integrated switch allows users to easily create a LAN. This allows all the PCs on the land to have access to the internet windows file, and printer sharing services. Routers might have a single WAN port and a single LAN port and are designed to connect an existing LAN hub or switch to a WAN.  Switches and hubs can be connected to a router with multiple Pc ports to expand a LAN. When a router receives a packet of data it reads the header of the pocket to determine the destination address. Once it has determined the address it looks in its routing table to determine whether it knows how to reach the destination; does it forwards the pocket to the next hop on the route. the next hop might be the final destination or it might be another router. 

WHAT IS THE DIFFERENCE BETWEEN

 HUB, SWITCH, AND ROUTER? 

  

- The difference between the three main network communication devices a hub glues together a wired network segment.
- A switch can connect multiple wired segments more efficiently while a router can do those functions, plus route pockets between multiple LANs and/or so much more.
- Hubs simply broadcast data to all connected devices.
- Switches intelligently forward data packets to specific devices based on their MAC addresses.
- Routers forward data packets between different networks based on their IP addresses and make decisions about the best path for routing traffic.