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Unit 3 Computer Networks P1

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Assignment 1
Task 1 (P1, P3, P5 and M1)
P1 - Computer Networks
Different Types of Communication Devices
Devices
Router
A router is a network device that routes packets to networks other than its own. Routers are almost like a bridge between networks. Most home use routers to connect their local network (their LAN) to the Internet (which is a wide-area network) with all-in-one devices with routers, modems and wireless access points built in.

Routers decide where the best route to a destination is using a file called the “routing table”, which has a list of different ways to get to one direction, quantified by the metric, which determines the distance of the path to travel so the router can efficiently pick the best path to use.

Modem
Modems
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These networks are generally managed by a singular computer device but offer a network to other systems connected to through wired or wireless connections such as phones, game systems, telephones or other peripheral devices such as printers. An example of a PAN is the connection between a Bluetooth headset and a Bluetooth-enabled phone.

LAN
Local Area Network or LAN for short is the term used for computer networks located at a single location such as a small business located at a singular location. They are generally used for businesses, organisations and the likes to transfer data amongst their systems as opposed to transferring data to outside of their location. A LAN typically will rely on wired connections due to the benefits of increased security and speed, but a network called a WLAN exists, which is a Wireless Local Area Network and this may prove useful for those who come to work using mobile devices such as laptops, phones, etc. WLANs are simply local area networks that consist solely of wireless connections using a wireless access point (WAP) as the central hub. However, LANs can be a mix of both wireless and wired.Typically in a LAN, systems connected to the network are able to share resources among each other, send data to servers and use peripherals such as printers, scanners &
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Expenses / Cost
The set-up of a wireless network will generally rely on the cost of wireless routers, wireless network adapters for every device, wireless access points (WAP) spread across the locations and installation fees. This works out to be more expensive than a wired network.
Relatively cheaper but can be costly depending on the type of wired connections used and installation fees. However, Ethernet, copper cables and switches are less expensive as opposed to the features required for a wireless network. Fibre optic cables can be a lot more expensive, but the price of installation and cable vary based on needs, area of installation and metre coverage.
Installation
Installation of wireless networks are relatively easy - they often simply involve playing a wireless access point in a place where the signal reaches the most areas. In more advanced installations, it is common to use a radio mapper to determine where the signal does and does not reach, for practicality and security reasons. The power of the router is important to consider and often can be adjusted on the software side to suit the
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