Geographic Knowledge and Map Reading Flashcards
7 cards from real 911 Operator Test practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Geographic Knowledge and Map Reading flashcards as text
What is the purpose of a 'jurisdiction boundary file' loaded into a CAD mapping system?
Answer: To automatically route calls to the correct agency based on the caller's geographic location
Jurisdiction boundary files allow CAD to automatically identify which agency is responsible for a given location and route the call accordingly.
A caller reports a structure fire at '500 Oak Street' but there are two Oak Streets in the dispatch area. What should the dispatcher do first?
Answer: Ask the caller for a cross street, zip code, or other identifying detail to determine the correct location
When duplicate street names exist, the dispatcher must immediately gather clarifying information to avoid sending responders to the wrong location.
In map reading, what does a 'scale bar' indicate?
Answer: It shows the ratio between map distances and actual real-world distances
A scale bar on a map provides a visual reference that allows users to convert distances on the map to actual physical distances.
A caller states they are at a location with no street address, only a GPS coordinate. What should the dispatcher do?
Answer: Enter the coordinates into the CAD mapping system or relay them to responders for GPS navigation
GPS coordinates can be entered directly into CAD or provided to responders using GPS devices to locate the caller even without a traditional address.
What geographic feature is most important to note when dispatching to a location described as being 'across the bridge'?
Answer: The specific bridge name and which body of water it crosses, to avoid confusion with nearby bridges
Identifying the specific bridge by name and the water body it crosses eliminates ambiguity when multiple bridges exist in the same area.
A dispatcher notices on the CAD map that the nearest unit to an incident is across a river with no bridge for 5 miles. What should the dispatcher consider?
Answer: Dispatch the next closest unit that has a viable route, accounting for travel obstacles
Map proximity does not always equal fastest response; geographic obstacles like rivers require dispatchers to consider actual road access and travel routes.
What does 'GIS' stand for and how is it used in 911 dispatch?
Answer: Geographic Information System — provides spatial mapping data to support accurate location identification and dispatch
GIS (Geographic Information System) integrates map layers, address data, and spatial analysis to help dispatchers precisely locate incidents and manage resources.