Net-Cyber Crime

Definition WLAN
WLAN (Wireless Local Area Network) or wireless LAN is a local area network that uses radio waves as tranmisinya media. used last link is a wireless (wireless), to provide a network connection to all users in the surrounding area. Or WLAN can be defined as a wireless network that uses radio frequency for communication between computer devices and end points of access that are the basis of two-way radio transceiver typically work in the bandwidth of 2.4 GHz (802.11b, 802.11g) or 5 GHz (802.11 a). Most equipment is qualified Wi-Fi, IEEE 802.11b or IEEE 802.11g and accommodation offers several levels of security such as WEP or WPA and.


 The advantages of WLAN:

     It's easier to add or move workstations.
     easier to provide connectivity in areas that are difficult to lay cable.
     Installation is quick and easy, and can eliminate the need to pull cable through walls / ceiling and wall / ceiling.
     access to the network can be from anywhere within range of the access point.
     Portable or semi-permanent buildings can be connected using WLAN.
     While the initial investment required for Wlan hardware similar to the cost of wired LAN hardware, installation costs can be significantly lower.
     When the facility is located on more than one site (like the two sides of the road), directional antennas can be used to avoid digging trenches under roads to connect to the site.
     Long-term cost benefits can be found in the dynamic environment that requires the frequency of motion and change.

Disadvantages of WLAN:

     When the number of computers that use the network increases, the data transfer to the computer each will be reduced.
     When standards change, it may be necessary to replace the wireless card and / or access point.
     The low bandwidth wireless means some applications like video streaming to be more effective on the LAN cable.
     Security is more difficult to guarantee and requires no configuration.
     The device operates on a limited distance from the access point, the distance is determined by the standard used and buildings and other obstacles between the access point and the user.
     A lan cable most likely be required to provide a backbone to WLAN, WLAN should be a supplement to the LAN cable and not a complete solution.
     Long-term cost-efficient is more difficult to achieve static environments that require few moves and changes.

Hopefully this article helps you in identifying a network :)