Question 1

What are attribute data as they relate to a GIS?
A) the type of software you need to run analysis
B) data that describes the characteristics of a place on the Earth
C) data that tells where a particular feature is on the Earth
D) the coordinate system of your map

Accepted Answer

Attribute data is data that describes the characteristics of a place on the Earth, such as population density, land use, or elevation. It is different from spatial data, which tells where a particular feature is on the Earth. The type of software you need and the coordinate system of your map are not examples of attribute data.

Question 2

A data layer may contain
A) locational and attribute data of different types of geographical features (point, line and area features)
B) locational and attribute data of one type of geographical features (either point or line or area features)
C) all spatial data covering the same area

Accepted Answer

A data layer typically contains locational and attribute data for one type of geographical feature, such as points, lines, or areas, to maintain consistency and manageability in spatial analysis.

Question 3

Which of the following is not true?
A) data layers in a GIS group related geographical features by theme
B) data layers in a GIS separate point, line and area features and group them into different layers
C) data layers in a GIS combine point, line and area features together in individual layers
D) data layers in a GIS can be used to develop thematic maps
E) data layers in a GIS can be used to highlight relationships among geographical features

Accepted Answer

This statement is not true as data layers in a GIS separate point, line and area features and group them into different layers rather than combining them together in individual layers.

Question 4

Which is not characteristic of discrete objects?
A) they may include points, lines, and areas
B) they completely cover the space
C) they can overlap
D) they can be counted

Accepted Answer

Discrete objects may include points, lines, areas, and other shapes, but they do not completely cover the space. Instead, they occupy specific locations within the space. Discrete objects can overlap, and they can be counted, but complete coverage of the space is not a characteristic of discrete objects.

Question 5

Vector data model is better used to store the data representing geographical features which
A) have well-defined boundaries or edges
B) are unidentifiable by their dimensionality
C) are not countable

Accepted Answer

Vector data model is based on points, lines, and polygons that have well-defined boundaries or edges. Therefore, it is a better choice to store the data representing geographical features which have well-defined boundaries or edges.

Question 6

Which of the following features is better represented using spatial data based on raster data model
A) roads
B) administration boundaries
C) property boundaries
D) rainfall
E) rain gauge stations

Accepted Answer

Rainfall is a continuous variable that varies continuously over space and time. Therefore, it is better represented using a raster data model. Raster data divides an area into a grid of square-shaped cells called pixels, which can store values of a continuous variable such as rainfall. Other features listed such as roads, administration boundaries, and property boundaries are better represented using vector data models, which represent geographic features as points, lines, or polygons with explicit geometric coordinates. Rain gauge stations could be represented using either vector or raster data models, depending on the level of detail required.

Question 7

Raster resolution represents
A) the size of the study area
B) the area size of a cell
C) the length of one side of a cell
D) the ratio of the area size of a cell and the size of the study area

Accepted Answer

Raster resolution represents the length of one side of a cell. It is usually measured in meters or feet. A higher resolution means smaller cell size, and therefore more detailed analysis can be performed. The size of the study area and the area size of a cell are not used to represent raster resolution. The ratio of the area size of a cell and the size of the study area is also not used to represent raster resolution.

Question 8

Locational data and attribute data in a geo-relational database are
A) stored in the same data file
B) managed using the same data structure
C) stored separately but linked via feature ID
D) stored separately, and need to be linked manually

Accepted Answer

Locational data and attribute data are typically stored separately but linked via a feature ID. This allows for efficient data management and querying, as well as the ability to easily update or modify one type of data without affecting the other. This design is a fundamental principle of geo-relational databases.

Quiz 2: Spatial Data and Data Management

What are attribute data as they relate to a GIS?

A data layer may contain

Which of the following is not true?

Which is not characteristic of discrete objects?

Vector data model is better used to store the data representing geographical features which

Which of the following features is better represented using spatial data based on raster data model

Raster resolution represents

Locational data and attribute data in a geo-relational database are