GISCI knowledge category 3 of 10

Cartography & Visualization: GISP practice questions

Cartography & Visualization on the GISP exam covers map design, symbology and visual variables, classification, colour, labeling, generalization, thematic map types and web maps. Here are five sample questions from our bank of 40 on this category, each with the answer and a short explanation.

Question 1 · Easy · Conceptual

A contiguous area cartogram of national election results intentionally distorts the shapes and sizes of states. What governs the size each state is drawn?

  1. Its true land area, rescaled to fit the page
  2. The density of its population per square kilometer
  3. A data value such as population or electoral votes, so area is proportional to that value
  4. The number of neighboring states it shares a border with
Show answer and explanation

Answer: C. In a value-by-area cartogram, each enumeration unit is resized so its area is proportional to an attribute (population, votes, GDP), sacrificing true geographic area and often shape. This counters the visual dominance of large, sparsely populated units on a conventional choropleth.

Question 2 · Easy · Conceptual

A map at a representative fraction (RF) of 1:1,000,000 compared with one at 1:24,000 is:

  1. An identical scale expressed differently
  2. A larger-scale map covering a smaller area
  3. A larger-scale map showing less detail
  4. A smaller-scale map showing a larger area with less detail
Show answer and explanation

Answer: D. A larger denominator means a smaller scale. 1:1,000,000 is a small-scale map covering a large area with less detail; 1:24,000 is a large-scale map covering a smaller area with more detail.

Question 3 · Medium · Conceptual

For a choropleth map of crop yield by county, which denominator best normalizes the raw harvest totals?

  1. Map scale denominator
  2. County land area in farmland (producing a yield per unit area)
  3. Total county population
  4. Number of counties in the state
Show answer and explanation

Answer: B. Normalization should use a denominator meaningfully related to the numerator. Dividing harvest totals by farmland area yields a comparable rate (yield per unit area), correcting for differences in county size.

Question 4 · Medium · Application

Following standard label-placement conventions, the preferred position for a point feature's label is generally:

  1. Directly underneath, left-aligned
  2. Rotated vertically along the symbol
  3. Upper-right of the symbol, clear of other features
  4. Centered on top of the symbol
Show answer and explanation

Answer: C. Cartographic convention favors placing a point label to the upper-right of the symbol, offset slightly so it does not overlap the point or nearby features. Hydrographic labels are an exception, often italicized and following the feature.

Question 5 · Hard · Conceptual

The Jenks natural breaks classification method optimizes class boundaries by:

  1. Minimizing within-class variance and maximizing between-class variance
  2. Ensuring each class has an equal number of features
  3. Placing breaks at fixed multiples of the standard deviation
  4. Dividing the data range into classes of equal width
Show answer and explanation

Answer: A. Jenks (natural breaks) iteratively seeks class boundaries that minimize variance within classes while maximizing variance between classes, grouping values that are naturally similar.

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What this category tests

Cartography & Visualization is one of the ten knowledge categories in the official GISCI exam blueprint. Questions are vendor-neutral: they test concepts and professional judgement rather than the menus of one software package, and they come as conceptual, application, scenario and data-interpretation items. Expect the exam to mix easy recall with harder scenario questions where you must choose the best course of action.

Other categories

Conceptual FoundationsGeospatial Data FundamentalsData AcquisitionsData ManipulationAnalytical MethodsDatabase Design & ManagementApplication DevelopmentSystems Design & ManagementProfessional Practice

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