The Ultimate Guide To Google Maps Interview Questions (2020) | TechGeekNext >>













The Ultimate Guide To Google Maps Interview Questions (2020)

Google Maps Interview Questions

  1. Q: What is Google Maps?
  2. Q: Does Google Maps have an API?
  3. Q: What is Google Maps Api?
  4. Q: Is Google Maps API free?
  5. Q: How to load the Google Map on a web page?
  6. Q: What is GIS?
  7. Q: What are the GIS types?
  8. Q: What are examples of GIS?
  9. Q: What are the six components of GIS?
  10. Q: What is GPS and how does it work?
  11. Q: What is the difference between GIS and GPS?
  12. Q: What is difference between google maps and earth?

Q: What is Google Maps?
Ans:

Google Maps is a web mapping service designed by Google.It provides geographic data, routes and other information to user.

Q: Does Google Maps have an API?
Ans:

Each product (Maps, Routes or Places) provide a set of APIs. You can choose multiple product and with it's Api's like Places: Places API, Places Library, Maps JavaScript API; Geocoding API; Geolocation API; Time Zone API; and Elevation API."

Q: What is Google Maps Api?
Ans:

The Google Map API is a robust tool that can be used to create a custom map, searchable map, check-in functions, display live data synchronization with location, plan routes, and many more features.

Q: Is Google Maps API free?
Ans:

Google Maps APIs are available for a wide range of use scenarios, including complimentary usage limits and consistent overage pricing for the use of regular APIs, as well as annual business implementation contracts.
The following APIs do not have usage limits:

Q: How to load the Google Map on a web page?
Ans:

Following are the steps to load the Google Map on a web page.
  1. First Create an HTML Page and load Google Maps API using script tag
  2. Create a container element to hold the Map. We use div tag
    <html>
    
    <!-- 1) Load Google Maps API using javascript -->
    <head>
        <script src="https://maps.googleapis.com/maps/api/js"></script>
    </head>
    
    <body>
    <!-- 2) Create a container to load Google Map inside -->
        <div id="mapContainer" style = "width:900px; height:580px;"></div>
    .............
    </body>
    </html>
  3. Define Google Maps Options:
    Following are the various options that Google Maps provide.
    • Centre
    • Zoom
    • Maptypeid
    var mapOptions = {
                      center:new google.maps.LatLng(17.240498, 82.287598),
                      zoom:9,
                      mapTypeId:google.maps.MapTypeId.ROADMAP
    };  
  4. Create Map Object :
    How we will Create Map Object by using the html div element container reference and passing Map options to as below
    function loadMap() {
       // Define Map Options
       var mapOptions = {
                  center:new google.maps.LatLng(17.240498, 82.287598),
                  zoom:9,
                  mapTypeId:google.maps.MapTypeId.ROADMAP
       };
    
       // Create Map Object by using the container reference and passing Map options  
       var map = new google.maps.Map(document.getElementById("mapContainer"), mapOptions);
    }
  5. Load the Map :
    Finally we will load Map either by loadMap() method as follow
    google.maps.event.addDomListener(window, 'load', loadMap);
                        OR
    <body onload = "loadMap()">


Q: What is GIS?
Ans:

A geographic information system (GIS) is a framework designed to capture, store, manipulate, analyze, manage and display all types of geographic information. Geography is the key word for this application, this means that some of the data is spatial.

Q: What are the GIS types?
Ans:

GIS have two categories:
  • Vector : Spatially referenced data which is represented by vector.
  • Raster: Raster forms (including imagery) and attribute tables which is represented in tabular format.

Q: What are examples of GIS?
Ans:

It is also possible to enter digital data into GIS. Computer data collected by satellites showing land use is the location of farms, cities, and forests is an example of such information. Remote sensing provides another tool that can be integrated into a GIS.

Q: What are the six components of GIS?
Ans:

The six parts of a GIS are: hardware, software, data, methods, people, and network.
Previously, there were only five parts to a GIS.

Q: What is GPS and how does it work?
Ans:

The Global Positioning System (GPS) is a satellite-based navigation system. The GPS is a network of about 30 satellites orbiting the Earth at an altitude of 20,000 km.Your GPS receiver intercepts these signals, traveling at the speed of light, and determines how far each satellite is depending on how long it took for the messages to arrive.

Q: What is the difference between GIS and GPS?
Ans:

GPS uses satellites orbiting Earth to relay on - the-ground data to GPS receivers. The information helps to determine the location of individuals. GIS is the Geographic Information System. GIS is a computer program that helps people to use GPS satellite data.

Q: What is difference between google maps and earth?
Ans:

Google Maps provides all the navigation, lightweight mapping power and points of interest with only a small hint of satellite imagery, whereas Google Earth has full 3D satellite data and only a small subset of location information, with no point-to-point navigation.





















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