Page 18 - Handout Computer Network.

LANs are designed to do the following:

• Operate within a limited geographic area
• Allow many users to access high-bandwidth media

• Provide full-time connectivity to local services
• Connect physically adjacent devices

Some common LAN technologies are:

• Ethernet
• Token Ring

• FDDI

https://www.youtube.com/watch?v=LCj2HDOd_Mk

2.4.2 Wide-Area Networks (WANs)

WANs interconnect LANs, which then provide access to computers or file servers in other locations.
Because WANs connect user networks over a large geographic area, as shown in Figure 2-2, they make
it possible for businesses to communicate across great distances.

Figure 2-2 shown a WAN Hierarchy

Using WANs allows computers, printers, and other devices on a LAN to share and be shared
with distant locations. WANs provide instant communications across large geographic areas. The
ability to send an instant message (IM) to someone anywhere in the world provides the same
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