Web Mapping and GIS Final Exam Questions with Complete
Solutions
concept of standards and their use both outside of and for the geospatial industry
Why have them?
Be able to explain why important for web mapping and
...
Web Mapping and GIS Final Exam Questions with Complete
Solutions
concept of standards and their use both outside of and for the geospatial industry
Why have them?
Be able to explain why important for web mapping and GIS ✔Ans✔Standards makes
things more efficient and effective by establishing norms
19500 standards
International Standards Organization
Goals of standards is to communicate, execute programs, or transfer data with user
having little or no knowledge
Software engineered to work with different formats
major standards organization for the geospatial industry and how it is comprised
✔Ans✔Open Geospatial Consortium
Data, systems, and process standards
Specific standards for many industries (aviation, energy, sensor webs)
specific geospatial standards ✔Ans✔Geo(JSON) (Javascript Object Notation)-
lightweight data interchange format
KML (Keyhole Markup Language)-points,rasters,lines,polygons, defines visualizations
WMS (Web Map Service)-standard for requesting and serving georeferenced map
images over internet..how HTTP requests and responses are handled between
client/server. rendered on the fly,
WMTS (Web Map Tile Service)-predefined image files
WFS (Web Feature Service)-standard for reading/writing vector geographic data
WCS (Web Coverage Service)-retrieval of actual geospatial data
GML (Geography Markup Language)- exchange standard, modeling language for
geographic systems
GPX (GS eXchange Format)- stores GPS data
XML (eXtensible Markup Language)-standard for exchanging and storing
data/documents
there are data formats that are widely used but not necessarily adopted by standards
organizations ✔Ans✔their specifications are published and open so software can be
built to use them
WMS and WFS ✔Ans✔Web Mapping Service and Web Feature Service
WMS-standard for requesting and serving georeferenced map images over
internet..how HTTP requests and responses are handled between client/server.
rendered on the fly,
WFS-standard for reading/writing vector geographic datacontrast WMS with WMTS ✔Ans✔Web Mapping Service- around longer, more flexible
for returning custom georeferenced map images, clunky with potential for slower
responses
Web Map Tile Service-standard for delivering tiles, potentially reduces data and thus
bandwidth...more efficient
how WMS can be consumed by web mapping APIs and cloud-based web GIS
✔Ans✔Web Mapping applications can access WMS, sending requests for images (not
tiles) that are rendered on the fly. when user zooms in a new image is requested.
How text files can be used in some software (e.g. cloud-based - e.g. CartoDB, Google
My Maps, etc.) ✔Ans✔Tabular data like CSV, Excel, Google Fusion Tables can be
used. what they can do and how they are used varies.
How we utilized data based on at least two of these standards in labs 4 and 6
✔Ans✔GeoJSON with Leaflet API to look at iowa counties poverty
CSV with CartoDB to look at twitter posts and animate them.
What is Cloud Computing ✔Ans✔computer paradign for enabling on-demand network
access to shared pool of configurable computing resources that can be rapidly provided
and released with minimal management effort or service provider interaction
Software on computers elsewhere (not personal computers)
[Show More]
 Answered 2023.png)
