|  | 3.3 | How to Identify and Select Networking Capabilities
| 3.3.12 | Alternatives to dedicated WAN links

It is not uncommon for remote sites to access the WAN core layer by using WAN technologies other than dedicated links. As shown the figure, Frame Relay and ISDN are two such alternatives. If a remote site is small and has low demand for access to services in the corporate network, ISDN would be a logical choice for this implementation. Perhaps another remote site cannot get access to dedicated WAN links from its service provider, but has access to Frame Relay.
| Lab Activity
This lab is an introduction to Wide Area Networks (WANs) and the part routers play in them.

| Lab Activity
The computer and networking field uses an incredible number of acronyms and abbreviations, sometimes called TLAs (or Three Letter Acronyms). This exercise will highlight some of the more common acronyms and terminology used.

| Threaded Case Study
Washington Project: The Frame Relay Link

You should provide access to the Internet or any other outside network connections through the Washington School District office by using a Frame Relay WAN link. For security purposes, no other connections should be permitted.