Google Map Interview Question
Google Map Interview Questions
Google Map Interview Question for Freshers
What is Google Maps?
Google Maps is a web-based mapping service that is designed and developed by Google. It contains geographical data and provides routes and information to the client.
What are the main features of Google Maps?
The following are the main features of Google Maps
- It searches places and provides route directions.
- It measures distance and ETA (Estimated Time of Arrival).
- It helps in getting traffic information.
- It receives verbal instructions.
- It provides location sharing and location editing.
- It displays the street view.
Does Google Maps have APIs?
Yes, Google Maps have APIs. The Google Maps APIs allow developers to embed Google Maps into web pages and access the data from Google Maps. This enables them to display Google Maps on their web-pages with either simple or extensive customization. One can select different products (such as Routes or Places etc.) because of linked API.
What are the steps to load Google Map on a web page?
Following are the steps to load the Google Map on a web page.
1) Create an HTML Page.
Create an HTML Page
<html>
<head>
</head>
<body>
.............
</body>
</html>
2) Load Google Maps API. Use the following script tag to load Google Maps API.
Load google map
<script src = "https://maps.googleapis.com/maps/api/js"></script>
3) Create a containerContainer element is created to hold the Map. We use tag as a container.
Create a Container
<div id = "sample" style = "width:900px; height:580px;">
What is Google Maps API ?
The Google Maps API is a robust tool that allows users to create a custom map or searchable map. It also helps users to add several other features with the created maps. For example- Check-in functions, data synchronization, plan routes, mark or share location, etc.
What are the available APIs in Google Maps?
There are several APIs available in Google Maps:
Web APIs
- Google Maps JavaScript API
- Google Street View Image API
- Google Static Maps API
- Google Maps Embed API
Web Service APIs
- Google Maps Directions API
- Google Maps Elevation API
- Google Maps Distance Matrix API
- Google Maps Geocoding API
- Google Maps Geolocation API
- Google Maps Time Zone API
- Google Maps Roads API
- Google Places API Web Service
Mobile APIs
- Google Maps Android API
- Google Places API for Android
- Google Maps SDK for iOS
- Google Places API for iOS
Is Google Maps API free?
Google Maps APIs are free to use for a wide variety of use-cases, with complimentary usage limits and consistent overage pricing for the use of standard APIs. There are also annual contracts available for business implementations.
How many types of Google Maps are there?
There are four types of Google Maps:
- Road Map: It is the default type of Google Maps. It displays the default road map interface.
- Satellite: It displays Google Earth satellite-based images.
- Hybrid: It displays both the general and satellite views.
- Terrain: It displays a physical map including the territory information.
Is there any way to change the zoom in Google Maps?
Yes, it is possible to change the zoom value in Google Maps. The value of the zoom can be increased or decreased by changing the zoom feature in the map option.
The following is the syntax where zoom-value can be modified according to the requirements:
Syntax
var mapOptions = {
zoom:required zoom value
};
Can we change the language in Google Maps?
Yes, we can change the language in Google Maps. The default language of Google Maps is English. However, it can be changed by adding the language option in the URL. e.g.,
Syntax
<script src = "https://maps.googleapis.com/maps/api/js?language=zh-Hans"></script>
What are the User Interface controls available in Google Maps?
Google Maps has many user-friendly control options that help users to easily interact with the map. Google Maps allow users to add, customize and disable these controls according to the requirements. The default controls are:
- Zoom: There are two buttons "+" and "-" in the bottom right corner of the Google Maps that can be used to control the zoom level of the Map.
- Pan: It is used for panning the Map.
- Map-Type: It is used to change the view of Google Maps. For example - Satellite view, Road map view or Terrain. The control option is available on the top right corner of the Map.
- Street View: It is used to get the street view of the specific location. To use this option, the user needs to drag the Pegman icon.
Differentiate google maps and google earth.
Google Maps contains all the information about navigation. It provides lightweight point-to-point navigation with only a small hint of the satellite. However, Google Earth displays the full 3D view of satellite data and only a small subset of location information. Google Erath does not provide point-to-point navigation.
What is Overlay in Google Maps?
Overlays are objects on the Google Maps that are tied on specified latitude/longitude coordinates. Google Maps provides different types of overlays:
- Marker
- Polyline
- Polygon
- Circle and Rectangle
- Info Windows
- Custom Overlays
What is Marker is Google Maps?
Google Maps provides a tool that is used to mark a location on a map, known as a Marker. Marker uses different types of symbols to mark the location with categories. These symbols can be set and customized manually.
What is GIS?
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.
What are the GIS types?
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.
What is the difference between GIS and GPS ?
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.
What is Google Maps Overlays ?
Any Object can be draw on the map and attach them to preferred latitude and longitude are known as overlays. Various overlays provided by Google maps like.
- Markers
- Polylines
- Polygons
- Circle and rectangles
- info windows
- Symbols
What is Google Maps Marker?
Google Maps Marker is used to mark a location on the map. Marker uses standard symbols which can be customized.
What is Shape in Google Maps ?
Shape is usually known object on the Google Maps.
How to add Event Listener in Google maps?
We can use addListener() method to add an event listener to the Google Maps.
How to add Symbol in Google Maps?
| Symbol | Google Maps property |
|---|
| Circle | google.maps.SymbolPath.CIRCLE |
| Backward Pointing arrow (closed) | google.maps.SymbolPath.BACKWARD_CLOSED_ARROW |
| Forward pointing arrow (closed) | google.maps.SymbolPath.FORWARD_CLOSED_ARROW |
| Forward Pointing arrow (Open) | google.maps.SymbolPath.CIRCLE |
| Backward Pointing arrow (Open) | google.maps.SymbolPath.CIRCLE |
Magenet is best Adsense Alternative here we earn $2 for single link, Here we get links ads. Magenet
