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Domain 1 — Mapping and Visualization (36%)

The largest section of the exam. Spend the most prep time here. Roughly 27 of 75 questions come from this domain.

What's tested

Skill Weight (relative) Confidence checklist
Adding data ▌▌▌▌ I can add data 4 different ways
Scale and visibility ▌▌▌ I know reference scale, scale ranges, visibility
Map and layer properties ▌▌▌▌▌ I know what's on Map vs Layer Properties dialogs
Symbology ▌▌▌▌▌ I know all renderer types and when to use each
Labeling ▌▌▌▌ I can label with classes, expressions, halos, callouts
Pro interface ▌▌▌ I can name every pane and ribbon tab

1.1 The ArcGIS Pro interface

What you must know

+--------------------------------------------------+
|  Quick Access  | Ribbon (context-sensitive)      |  ← top
+--------------------------------------------------+
| Catalog | Contents |   Map view / Layout         |
|         |          |                             |
|         |          |                             |
|         |          | Geoprocessing | Symbology   |  ← panes (dockable)
+--------------------------------------------------+
|  Status bar (CRS, scale, units, coordinates)     |  ← bottom
+--------------------------------------------------+
Element What it does
Ribbon Context-sensitive tabs. Selecting a layer adds Feature Layer tabs (Appearance, Labeling, Data)
Catalog pane Browse Project / Portal / Computer / Favorites
Contents pane Layer order, visibility, symbology summary
Map view The actual map
Layout view Page-based output (separate from map)
Geoprocessing pane Run tools
Symbology pane Style layers
Status bar Map's CRS, scale, mouse coords

Project vs map vs layout

  • Project (.aprx) — the file that holds maps, layouts, tasks, layers.
  • Map — a 2D map within a project.
  • Scene — a 3D scene within a project.
  • Layout — a page (Letter, Tabloid, custom) for printing/exporting.

A project can have many maps and many layouts.

Common exam traps

  • "What pane shows the order of layers in the map?" → Contents
  • "Where do you browse data inside the project?" → Catalog (or Catalog View / Catalog Pane)
  • "You changed the scale and now labels disappeared. Why?" → Scale-dependent labels or visibility

1.2 Adding data

ArcGIS Pro accepts data in many ways. All of these are correct answers depending on context:

Method When to use
Map ribbon → Add Data → Data Most common; opens Catalog dialog
Catalog pane → drag into map Already have it bookmarked
Insert ribbon → Connections → Add Database Connecting to enterprise GDB
Add Data → From Path Type / paste a service URL
Drag & drop from Windows Explorer Quick local file
Map ribbon → Basemap Add a basemap layer
Add Data → Living Atlas Curated authoritative layers

→ See Map Layers.

1.3 Scale and visibility

This area is heavily tested. Memorize these terms:

Term Meaning
Map scale Current zoom shown in status bar (1:24,000)
Scale ranges Min/Max scale at which a layer draws (Layer Properties → General)
Reference scale Scale at which symbol & label sizes are anchored. Below the reference scale, symbols appear smaller; above, larger. Set on the Map Properties → General dialog
Visible at all scales The default — no scale range set
Out beyond / Out beyond [scale] Layer not currently visible at the active scale

When labels disappear at a scale

Either the layer's scale range is restrictive, or the label class has a scale range, or the reference scale is making them too small.

Common exam patterns

  • "You want symbols to grow as you zoom in." → Set a reference scale
  • "Layer disappears below 1:50,000." → Visible at all scales / scale range set
  • "How to lock label size at 1:24,000." → Reference scale on the map

1.4 Map and layer properties

Two different dialogs. Know what's on which.

Map Properties (right-click map in Contents)

  • General — name, reference scale, rotation
  • Coordinate Systems — current map CRS + transformations
  • Transformation — datum transformation between CRS
  • Time — time slider settings
  • Illumination — for 3D scenes
  • Labels — Maplex vs Standard label engine
  • Metadata — for the map

Layer Properties (right-click layer in Contents → Properties)

  • General — name, scale ranges, refresh rate
  • Source — file path, data type, CRS
  • Symbology — appearance
  • Display — visible fields, popups, hover, transparency, swipe
  • Cache — for image services
  • Definition Query — SQL filter on the layer
  • Time — time properties
  • Range — non-time ranges
  • Joins / Relates
  • Page Query — for map series
  • Labels — turn on, expression, classes
  • Metadata — for the layer

Common confusion

  • CRS of the map is on Map Properties.
  • CRS of the layer's data is on Layer Properties → Source.
  • These can differ — the map projects layers on the fly to display.

1.5 Symbology

You're expected to know every renderer and when to use it.

Renderer Use for Example
Single Symbol All features look the same All park polygons green
Unique Values Categorical Land use type
Graduated Colors Quantitative continuous, colored Median income choropleth
Graduated Symbols Quantitative continuous, sized Population by city, sized circles
Proportional Symbols Quantity by symbol size (true ratios) Earthquake magnitude
Unclassed Colors Continuous gradient (no breaks) Smooth heatmap-style
Bivariate Colors 2 quantitative variables on 1 ramp Income × education
Heat Map Density of points Crime hotspots
Dot Density Counts shown as dots in polygons Population dots per tract
Dictionary Military/transportation symbology spec Mil-2525
Charts (pie / bar / stacked) Multiple values per feature Demographic composition

Classification methods (graduated colors)

Method Best for
Natural Breaks (Jenks) General — minimizes within-class variance
Equal Interval Continuous data with even ranges (rainfall, temp)
Quantile Equal counts in each class — shows ranking
Standard Deviation Identifying outliers around the mean
Geometric Interval Skewed data
Manual Interval You know the meaningful breakpoints

→ See Symbology.

Common exam patterns

  • "Choropleth of percent population over 65." → Graduated Colors
  • "Show categories of land use." → Unique Values
  • "Show counts at different locations as size." → Graduated or Proportional Symbols
  • "Don't want hard class breaks." → Unclassed Colors

1.6 Labeling

The label workflow is on the Labeling tab that appears when a feature layer is selected.

Concept Details
Label engine Standard (basic) vs Maplex (advanced; default)
Label class Subgroup of features with own expression / placement
Expression Arcade or Python that returns the label string
Placement Polygon centroid, line parallel, point offset
Halo / Callout Background to keep labels readable
SQL Query (per label class) Limit labeling to a subset
Scale range (per label class) When labels appear

Common exam patterns

  • "Label only major roads, not minor." → Label class with SQL Type = 'Major'
  • "Make the label show name AND population." → Arcade expression: $feature.NAME + " (" + $feature.POP + ")"
  • "Make labels resize with zoom." → Reference scale on the map
  • "Why are some labels missing?" → Label conflict avoidance / placement collisions

→ See Labeling.

Domain quick-quiz (before you take the full practice test)

  1. Which dialog do you use to set a reference scale for a map?
  2. Which renderer would you use to display median household income by tract?
  3. Where would you set a scale range so a layer only draws below 1:50,000?
  4. What is the difference between Map Properties → Coordinate Systems and Layer Properties → Source?
  5. Which Maplex/Standard setting controls whether labels can rotate to follow a road?
Answers
  1. Map Properties → General
  2. Graduated Colors (or Unclassed Colors)
  3. Layer Properties → General → Visibility range
  4. Map Properties = the map's display CRS. Layer Properties → Source = the layer's data CRS, which can differ.
  5. Maplex Label Placement Properties → "Try horizontal first" / "Curved" placement options.

→ Next: Domain 2 — Data Management (32%).