network

network

1. local area network

   • advantages
   • hardware neded
     • router
       • connects all of the devices as long as they have inter face card
       • ethernet cable
         • a wired connection to router or switch
         • faster data transfer speed
         • can be more secure
         • wiring cost money
         • more effective data transfer
       • wifi
         • longer range
         • esay er to connect
         • an advan tage of having your inter net wireless is that all you need is is just a simple poassword
     • switch

2. wan

   • a collection of networks are connected over a LARGE geographical area
   • ways to connect to wan
   • ways to connect to wan

3. wpan

   • a network for interconnecting devices centered around an individual person's workspace - in which the connections are wireless.
   • The main WPAN technology is Bluetooth, launched by Ericsson in 1994, which offers a maximum throughput of 1 Mbps over a maximum range of about thirty metres. Bluetooth, also known as IEEE 802.15.1, has the advantage of being very energy-efficient, which makes it particularly well-suited to use in small devices.
   • Signal range is maximum 10 meters which makes limitation for long distance sharing. Interfere with radio signals: As personal area network also use infrared so it can interfere with radio signals and data can be dropped. Slow data transfer: Bluetooth and infrared have a slow data transfer rate as compared to another type of networks like LAN (local area network). Health problem: In some cases, PAN uses microwave signals in some digital devices which have a bad effect on the human body like brain and heart problems may occur. Costly in terms of communication devices: Personal area network is used in digital devices which are costly so it is another disadvantage of PAN. Examples are smartphones, PDA, laptops, and digital cameras. Infrared signals travel in a straight line: TV remote use infrared signals which have a problem that they travel in straight line. So this counts another disadvantage of PAN. Examples of personal area network Some examples of PAN are: Wireless keybord