WiFi
stands for Wireless Fidelity.
WiFi
is tekologi jarigan without abel that uses high-frequency
electromagnetic waves to transmit data. Frequencies used by WiFi
technology is the 2.3 GHz spectrum.
By
using WiFi, you can access the Internet quickly. WiFi internet access
has the capability of up to 11 Mbps or five times faster than
Internet access using 3G.
Because
using wireless WiFi technology suitable to utilize the site or
runagan are always altered appearance.
So
that we can tehubung computer to the Internet using Wi-Fi, our
computer must be equipped with a WiFi card or supports WiFi
technology. Then we kitaberada at locations where available WiFi
signal, or often called hotspots or point points. Nowadays there are
many public places that have been providing services akes use WiFi
internet connection.
There
are three kmponan contained in a hotspot location, among others
sebgai follows:
1.
Access Point (Access Point) is a device that connects to an Ethernet
LAN Wireless technology contained in the computer. The access point
has to serve users as many as 128 people. The area can be reached by
an access point reaches 25-100 meters.
2.
Access Controller (access control) is a device that functions as an
authentication tool, to check whether a user is a person who has the
right or permission to access.
3.
Internet Link is a device that connects to the internet hotspot
locations. Internet has the ability to link to the Internet
connection speed of 512 kbps. This connection capability is used to
serve all users in a single location.
The
downside of internet access with WiFi is the only access Dapa done on
derah as far as 100m from the point of points. And until now, only
certain places are already installed dot points.
Certain
places are usually campuses, hotels, cafes, airports, and other
public places. Today there are many malls, cafes, hotels that provide
Internet access using WiFi service for free. This is then used by
many people for accessing the internet while hanging out with
friends.
Another
drawback internet access via WiFi is the problem of data security.
Even encrypted (encoded), the data is sent over data networks yan
easily penetrated.
Wireless
Broadband
Wifi
technology allows us to access the internet at high speed. However,
the condition we should be on areas covered WiFi signal.
The
limited area with WiFi signal and the distance range of the WiFi
signal is very short (about 100m) cause we can only use WiFi in
certain areas only.
Nowadays
a new wireless technology being developed called Wireless Broadband
(WiBro).
However,
this technology is still under development and only used in some
countries and not yet marketed in Indonesia.
Dibandingka
with WiFi, WiBro can be accessed from a distance of 1 kilometer from
the point of access points with a speed of 512 kbps. WiBro access can
still be done from vehicles moving at speeds up to 60 km / h.
Belum ada tanggapan untuk "understanding wifi"
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