A type of exercise or plan test. The plan or sections of the plan are reviewed in a systematic manner in which each planned step is discussed and described to ensure appropriateness in that scenario. Effective method to verify coordination between plan elements.

An alternate processing site which is only partially equipped (as compared to hot site, which is fully equipped).

Like a LAN, except that parts of a WAN are geographically dispersed, possible in different cities or even on different continents. Public carriers like the telephone company are included in most WANs; a very large WAN might have its own satellite stations or microwave towers.