LAN stands for local area network. LANs enable computing devices within the same local area, such as the
same building, to share information, as illustrated here.
Now that you have a solid understanding of LANs, it will be easy for you to understand how WANs work. A WAN is a wide area network. WANs
enable remote computers and computer devices beyond the same building or physical structure to share information, as illustrated below.
Typically, a WAN consists of two or more local area networks (LANs).
Computers connected to a WAN are often connected through public networks, such as the telephone system. They can also be connected through
leased lines or satellites. In a sense, the largest WAN in existence is the Internet.
The next lesson discusses more networking technologies, the Internet, VPNs, intranets and extranets.
Most organizations install LANs and a WAN, whether or not they participate in eBusiness. As a result, their installation may not be part of
planning an eBusiness solution. But they will
be if your company is new and needs such an installation. For these reasons, it is
important to be aware not only of the utility of LANs and WANs, but also of the challenges they pose.
For LANs, the biggest challenge is managing bandwidth. If there is a bottleneck in your eBusiness solution, it may be that the LAN isn't
performing efficiently. LANs need to be maintained regularly to prevent such slow-downs.
When considering implementing a WAN, it is necessary to consider its performance, reliability, and manageability.
Click the Quiz link below to test your knowledge of LANs and WANs.
lans wans - Quiz