GIS Exam

How thick will a 10 meter wide road be if presented in correct scale on a 1 : 50 000 scale map?

0.2 mm

Which of the following maps is a large-scale map? Select one: a. 1 : 1 000 000 b. 1 : 100 000 c. 1 : 10 000

1 : 10 000

What is the size in bytes of a raster layer (header not included) with byte data consisting of 50 rows and 100 columns? Select one: a. 500 bytes b. 5000 bytes c. 10000 bytes

5000 bytes

Each UTM zone covers ______ degrees in longitude

6

If a raster has the cell resolution of 30 meters, then a cell in the raster measures: Select one: a. 300 square meters b. 600 square meters c. 900 square meters d. none of the above

900 square meters

To create buffer zones in a raster layer you need to do two different operations: Select one: a. A distance calculation and an overlay operation b. A distance calculation and a reclassification c. A distance calculation and a regional operation

A distance calculation and a reclassification

A combination of two line layers creates: Select one: a. A new line layer b. A new polygon layer c. Two new layers (lines and polygons)

A new line layer

If you are estimating the mean values for different polygons in raster data you need: Select one: a. A polygon mask b. The values to be stored in binary format c. The polygon areas

A polygon mask

Which Boolean connector is the keyword used in the Intersect operation on sets in probability?

AND

Which objects in a map have ID-numbers?

All objects

Which of the following can be used as a neighborhood in raster data operation? Select one: a. A 3x3 rectangle b. A 5x5 rectangle c. A circle d. All of the above e. Only a and b

All of the above

Which of the following is true about relational database query? Select one: a. One can work with two or more tables. b. Relational database queries rely on keys that connect tables. c. One may query tables that are connected by either join or relate. d. All of the above. e. Only a and b.

All of the above

What does a geographical theme describe?

All possible information about a subject

What can be represented by geographical data?

Almost everything in our surroundings, including dynamic objects

What is a buffer zone?

An area around a geometrical object

To find intersections between lines in raster model is based on: Select one: a. Pythagoras theorem b. Y=m+kx c. An overlay operation

An overlay operation

When looking for areas with both deciduous and conifer forest grows you can use the logical operand: Select one: a. And b. Or c. Not

And

How is slope often estimated? Select one: a. By the use of a filter operation b. By the use of an overlay operation c. By the use of Interpolation

By the use of a filter operation

How do you symbolise a spruce forest? a. As green stars b. As a green polygon c. Can vary depending on the target group/end users

Can vary depending on the target group/end users

You have downloaded a shapefile from a website that shows toxic waste sites in your state. Which operation will you use to get a map showing toxic waste sites within a 10-mile buffer zone map that you have made around your home? Select one: a. Erase b. Dissolve c. Clip d. Eliminate

Clip

Which local operation can assign a unique output value to each unique combination of cell values from multiple rasters? Select one: a. Add b. Merge c. Combine d. Reclassify

Combine

What do we mean by merging of map layers? Select one: a. Overlaying e.g. points and polygons b. Combining two adjacent map sheets c. Merging the attributes of two thematic maps

Combining two adjacent map sheets

What projection shape is used by the UTM?

Cylindrical

What do you normally begin with in a GIS Project?

Database Construction

A slope value is often presented in: Select one: a. Degrees b. Percent c. Degrees or percent

Degrees or percent

In topographical modeling, what is aspect? Select one: a. Direction of slope b. Slope steepness c. Longitude and latitude of slope

Direction of slope

(T or F) The scan order indicates the order of the columns. Select one: a. True b. False

False

(T or F) Using the same input data, one can always derive the same slope layer from different GIS packages. Select one: a. True b. False

False

(T or F) We must convert all input rasters to the same cell size before using them in ArcGIS for a raster data operation. Select one: a. True b. False

False

The following factors are the only factors that influence the size of your raster layer? 1. Number of rows and columns 2. Data type 3. Compression. Select one: a. True b. False

False

Decide if a holiday resort is a geographical field or geographical object or neither. a. Geographical field b. Geographical object c. Neither

Geographical object

Where is the source of light when using a gnomonic projection of a sphere?

In the middle of the sphere

Which overlay method uses the Boolean operation of AND? Select one: a. Union b. Intersect c. Identity d. Symmetrical difference

Intersect

Which spatial relationship would one use to find land parcels that are on an earthquake fault line?

Intersect

The_____ operation allows the combining of two relations by merging pairs of tuples, one from each relation, into a single tuple. Select one: a. Select b. Join c. Union d. Intersection

Join

What do we need to perform a Network analysis? Select one: a. A vector layer with roads b. Lines connected in a network c. Full topology polygon data

Lines connected in a network

Which of the following is not true about a relational database? Select one: a. A primary key and a foreign key are needed to relate two tables in the database. b. Attributes in the database can be numeric or character. c. The database is made of separate tables. d. None of the above.

None of the above

Where is the source of light when using a stereographic projection of a sphere?

On the opposite side of the sphere

Which of the following statements is true about DEMs and TINs? Select one: a. One can only convert a DEM into a TIN. b. One can only convert a TIN into a DEM. c. One can convert a DEM into a TIN, or a TIN into a DEM. d. None of the above.

One can convert a DEM into a TIN, or a TIN into a DEM.

Which statement is true when one wants to perform queries using both spatial and attribute data?

One can perform query first with either spatial data or attribute data.

When overlaying points and polygons we change: Select one: a. Only attribute data b. Only geometrical data c. Both attribute and geometrical data

Only attribute data

Projected maps often use a right-angled coordinate system to?

Position an object on the map

Which of the following will help to quickly display (visualize) a raster layer? Select one: a. Scan Order b. Pyramid layers c. Irregular tesselation d. Quadtree

Pyramid layers

What is the combination of red - green - blue colours called?

Red Green Blue colour model - RGB

Which of these phenomena should be represented as lines? Select one: a. Roads on a map of Europe b. Cities on a 1 : 50000 scale map c. Roads on a 1 : 2000 scale map

Roads on a map of Europe

You have a land use map that shows land use classes of urban, agricultural, commercial, and so on. Which operation will you use to get a new map that only shows agricultural land use? Select one: a. Erase b. Eliminate c. Clip d. Select

Select

Basically, projections will affect the?

Shape of the map area

Which of the following is used to denote the selection operation in relational algebra? Select one: a. Pi (Greek) b. Sigma (Greek) c. Lambda (Greek) d. Omega (Greek)

Sigma (Greek)

What is a sliver polygon? Select one: a. The resulting polygons when overlaying polygons on polygons b. Small error polygons sometimes created when overlaying polygons on polygons c. Small river polygons created when overlaying polygons on polygons

Small error polygons sometimes created when overlaying polygons on polygons

What type of data can NOT be used as attribute data?

Smell

A relational database consists of a collection of Select one: a. Tables b. Fields c. Records d. Keys

Tables

A famous network analysis algorithm is: Select one: a. The Douglas-Peucker algorithm b. The Dijkstra algorithm c. The Kriging algorithm

The Dijkstra algorithm

A cell value in a DEM always represents: Select one: a. The average of the corresponding surface b. The centre point of the corresponding surface c. The mode value of the corresponding surface

The centre point of the corresponding surface

What is the basic problem with cartography and map projections?

The earth is round while a map is flat

What is the most important element of GIS?

The personnel, i.e. the person responsible

The distance between a point and a polygon in raster data is: Select one: a. The longest possible distance between them b. The shortest possible distance between them c. The average distance between them

The shortest possible distance between them

What does k in the equation y=m+kx stands for: Select one: a. Where the (extended) line intersects the y-axis b. The slope of the line(y-units per x unit) c. The negative sloope of the line d. The intersection with the x-axis

The slope of the line(y-units per x unit)

The start and stop node have the same x- and y-coordinates in a polygon. Find the correct statement to explain this.

The start and stop node must be the same to close the polygon, if not it is a line

How do you define a thematic map? Select one: a. It presents only one object at a time b. It presents information about different thematic issues c. The visualized data is divided in different themes

The visualized data is divided in different themes

Why do we use a false origin (false easting and false northing) for many existing reference systems?

To avoid negative coordinates

What does TIN mean? Select one: a. TrIangular Network b. Triangular Irregular Network c. Topographical Irregular Network

Triangular Irregular Network

(T or F) A neighborhood operation on a raster requires the focus cell to move from one cell to another until all cells are visited. Select one: a. True b. False

True

(T or F) A quadtree is an example of a compression technique. Select one: a. True b. False

True

(T or F) In a tessellation each cell has only one value and this value is valid for the complete cell Select one: a. True b. False

True

(T or F) Your cell value can be an identifier that you can use to link your raster layer with a table that stores multiple fields. Select one: a. True b. False

True

DTM operations are: Select one: a. Not sensitive to cell size b. Very sensitive to cell size c. Always right

Very sensitive to cell size

Why are colour presentations sometimes better than gray scale presentations?

We can distinguish between approx 500 times more colours than levels of gray

Map projection is a process of converting from

a three-dimensional surface to a two-dimensional surface

Integration of raster and vector data can take place with Select one: a. data display b. data processing c. data analysis d. all of the above

all of the above

Which of the following is true about a line feature? a. A line feature is made of lines. b. A line connects two end points. c. The shape of a line is made of connected points. d. All of the above e. Only a and c

all of the above

Which of the following is true about the vector data model? a. The model uses x-, y-coordinates to store the geometry of spatial features. b. The model uses points, lines, and polygons to represent simple spatial features. c. The representation of spatial features using the vector data model depends on map scale. d. All of the above e. Only a and b

all of the above

Which application in ArcGIS Desktop is designed for data management?

arc catalog

How do we indicate position on a sphere?

by meridians and parallels

Which data structure stores raster data as a matrix and writes the cell values into a file by row and column? Select one: a. cell by cell b. run length code c. quad tree d. none of the above

cell by cell

The term attribute refers to a ___________ of a table. Select one: a. Record b. Column c. Tuple d. Key

column

Which of the following topological relationships describe the arc-node relationship in the coverage model? a. connectivity b. area definition c. contiguity

connectivity

Which spatial relationship would one use to find banks within a county?

containment

Each row in an attribute table represents a _______ and each column represents a _______:

feature, characteristic

LIDAR data can provide DEMs with a spatial resolution of Select one: a. finer than 2 meters b. 5 to 10 meters c. 10 to 20 meters

finer than 2 meters

Decide if sea surface temperature is a geographical field or geographical object or neither.

geographical field

Decide if a forest is a geographical field or geographical object or neither.

geographical object

Decide if roads are geographical fields or geographical objects or neither.

geographical objects

Which of the following symbol type will you use for displaying rates of population change by county (or equivalent area unit) in your state? a. single symbol b. graduated color c. unique value d. dot

graduated color

The output from a 5x5 neighborhood operation will be _________ the output from a 3x3 neighborhood operation: Select one: a. the same as b. more generalized than c. less generalized than

more generalized than

Decide if a Contour line on a map is a geographical field or geographical object or neither.

neither

Data grouped into different categories are called:

nominal data

Which of the following statements is not true about the polygon feature? a. A polygon is a two-dimensional object. b. A polygon has the properties of area and boundary. c. A polygon may form a hole within another polygon. d. None of the above

none of the above

The simplest data relationship for GIS operations is the: Select one: a. one-to-one relationship b. one-to-many relationship c. many-to-one relationship d. many-to-many relationship

one-to-one relationship

Which of the following operations can create new attribute data from existing data? a. data classification b. data query c. data computation d. only a and c e. only b and c

only a and c

Which of the following is an example of the 'hue and value' color scheme? Select one: a. blues to reds dichromatic b. orange monochromatic c. yellow to green to dark blue

orange monochromatic

Data that can be differentiated by a ranking relationship are called:

ordinal data

To open the context menu of a data set, one should ______the data set

right-click

Which of the following features is a discrete feature? - roads - elevation - precipitation - none of the above

roads

A ________ in a table represents a relationship among a set of values. Select one: a. Column b. Key c. Row d. Entry

row

The Douglas-Peucker algorithm is an example of ....? Select one: a. simplification b. dissolving c. aggregation

simplification

Which of the following is a potential drawback of normalization? a. slowing down of data access b. running out of primary and foreign keys c. missing tables d. none of the above

slowing down of data access

Selection by Location in ArcMap is designed for:

spatial data query

The term _______ is used to refer to a row. Select one: a. Attribute b. Tuple c. Field d. Instance

tuple

Which of the following parameters represents the angle measured from the horizon to the altitude of the observer in a 3-D view? Select one: a. viewing angle b. viewing azimuth c. viewing distance d. none of the above

viewing angle

Using SQL, one will set up a query expression following the keyword_____: Select one: a. Select b. From c. Where

where