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Wireless technologies

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Wireless technologies 1 puslapis
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Wireless technologies 4 puslapis
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Ištrauka

Twenty years ago networks, even wired were not common. First of all small wired networks appeared. After that internet followed, now we have wireless networks spread all over the world. In this research we will try to explain the main wireless technologies and to look around the technical specifications of such networks. When the wireless networks firstly appeared they were heavily vulnerable to hackers’ attacks. Because it was hard to control the range of such networks, so anyone who had a wireless connection card had a chance to connect to such a network and steel any information available for network users. First of all we should realize why wireless networks are so hard to protect. The main reason is the range of such networks. Wired networks are more secure because if you want to connect to such a network, you must physically be near the network. Wireless networks have range between 30 meters to 150 meters and an intruder can sit 100 meters from your network and he would still be able to connect without any problems.
Protocol
Release date
Op. Frequency
Data Rate (TYP)
Data Rate (Max)
Range (indoor)
Legacy
1997
2.4-2.5 GHz
1 Mbit/s
2 Mbit/s
?
802.11a
1999
5.15-5.35/5.47-5.725/5.725-5.875 GHz
25 Mbit/s
54 Mbit/s
~50 meters
802.11b
1999
2.4-2.5 GHz
6.5 Mbit/s
11 Mbit/s
~100 meters
802.11g
2003
2.4-2.5 GHz
25 Mbit/s
54 Mbit/s
~100 meters
802.11n
2006
2.4 GHz or 5 GHz bands
200 Mbit/s
540 Mbit/s
~50 meters
That is why security was the main priority of wireless technologies development. Different encryption protocols and security systems were developed. In this research we will walk through each of them and we will try to find out the best security system of the wireless connected networks. We have chosen a questionnaire because we think that is the best way to research the current situation in reality.
Literature:
en.wikipedia.org
It was impossible to use paper books because there are no books available in wireless technologies subject. So we have used the internet. en.wikipedia.org is one of the biggest...

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Detali informacija
Darbo tipas
Lygis
Universitetinis
Failo tipas
Word failas (.doc)
Apimtis
7 psl., (1752 ž.)
Darbo duomenys
  • Interneto tyrimas
  • 7 psl., (1752 ž.)
  • Word failas 62 KB
  • Lygis: Universitetinis
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