LAN: Local Area Network.
WLAN: Wireless Local Area Network.
WAN: Wide Area Network.
Differences between a LAN and WLAN:
- LAN uses cables to transmit data.
-WLAN uses wireless technology.
WLAN: Wireless Local Area Network.
WAN: Wide Area Network.
Differences between a LAN and WLAN:
- LAN uses cables to transmit data.
-WLAN uses wireless technology.
Advantages of WLANs
-Cheaper as there are less cables.
-New workstations can be added anywhere.
-Different devices can be connected easily.
-New workstations can be added anywhere.
-Different devices can be connected easily.
Disadvantages of WLANs
-Slower transfer rates
-Limited transmission distance
-Physical obstacles can limit transmission
-Less security
-Limited transmission distance
-Physical obstacles can limit transmission
-Less security
The hardware and software needed to connect a LAN to the Internet includes:
-A router to connect LAN to the Internet.
-A proxy server to send requests for pages and receive pages to be passed onto users.
An Internet browser, like Internet Explorer or chrome, to search for information.
-A router to connect LAN to the Internet.
-A proxy server to send requests for pages and receive pages to be passed onto users.
An Internet browser, like Internet Explorer or chrome, to search for information.
ISP stands for: Internet Service Provider and is a company that provides services allowing you to access the internet. My ISP is Sky; others include BT or Virgin.
You need to set up an account with an ISP to get an Internet connection installed to your location.For a monthly fee, the service provides you with access to the Internet. A web browser is the software you use to locate, retrieve and also display content on the World Wide Web, including web pages, images, videos, ect.
You need to set up an account with an ISP to get an Internet connection installed to your location.For a monthly fee, the service provides you with access to the Internet. A web browser is the software you use to locate, retrieve and also display content on the World Wide Web, including web pages, images, videos, ect.
Proxy Server
The role of a proxy server when a LAN is connected to the Internet:
-Acts as a web server.
-A buffer between the Internet and a LAN.
-Server passes requests to the internet.
-Passes the requested pages to individual computers.-Cache/store webpages- pages often visited are loaded quicker.
-Used to monitor internet usage.
-Can block certain sites.
Here is an image to show this:
-Acts as a web server.
-A buffer between the Internet and a LAN.
-Server passes requests to the internet.
-Passes the requested pages to individual computers.-Cache/store webpages- pages often visited are loaded quicker.
-Used to monitor internet usage.
-Can block certain sites.
Here is an image to show this: