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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Sharing Insights | 25% | - Publish and share workbooks - Set permissions and access - Ensure accessibility and clarity - Export and publish visualizations |
| Topic 2: Connecting to and Preparing Data | 23% | - Join and union data - Manage data fields and hierarchies - Data cleaning and transformation - Connect to various data sources |
| Topic 3: Understanding Tableau Concepts | 15% | - Visualization best practices - Workbook, worksheet, and dashboard structure - Data types and roles - Dimensions vs measures |
| Topic 4: Exploring and Analyzing Data | 37% | - Sort, group, and summarize data - Apply calculations and aggregations - Use filters, parameters, and sets - Create interactive dashboards and stories - Create and customize visualizations |
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問題 #22
Which aggregation is available without requiring a table calculation or calculated field?
答案：C
解題說明：
Standard deviation is available as a native aggregation for a measure and does not require the author to create either a table calculation or a calculated field. Therefore, C is correct. When a measure is used in a Tableau view, its aggregation can be changed through the field menu. In addition to commonly used functions such as SUM, AVG, MIN, MAX, and COUNT, Tableau provides Standard Deviation and Standard Deviation (Population) as built-in aggregation choices. The calculation is performed directly over the records contributing to the current mark. Running Total and Percent of Total are different because they are table calculations. They operate on already aggregated values after Tableau has constructed the visualization and depend on the addressing and partitioning of the view. Sample covariance is supported through calculation functionality such as covariance functions but is not presented as the equivalent direct aggregation option in the basic measure aggregation menu represented by this question. Implementing covariance typically involves specifying the two expressions whose covariance is required. Tableau's official Data Aggregation documentation explicitly lists standard deviation among the aggregations available for measures, including sample and population forms. Consequently, it can be selected directly without constructing an additional calculated field or applying a quick table calculation.
問題 #23
Which string function should a Tableau associate use to find a substring within a column and return a Boolean value?
答案：D
解題說明：
The correct function is CONTAINS, making D correct. Its syntax is conceptually CONTAINS(string, substring), and it returns a Boolean result indicating whether the specified substring exists anywhere within the source string. For example, CONTAINS([Product Name] , "Office") evaluates to TRUE for records where Product Name contains the sequence "Office" and FALSE where it does not. This makes CONTAINS useful for classification calculations, conditional logic, filtering, validation, and text-based segmentation. The other functions perform different operations. RTRIM removes trailing spaces and returns a string. SPLIT separates a string using a delimiter and returns the requested substring component. ENDSWITH does return a Boolean value, but it tests specifically whether the original string ends with the supplied substring. The requirement is to determine whether a substring occurs somewhere within the column value, so ENDSWITH is too restrictive. Tableau's official String Functions reference explicitly defines CONTAINS(string, substring) as returning TRUE when the supplied string contains the specified substring and identifies its output data type as Boolean. The same documentation distinguishes CONTAINS from STARTSWITH, ENDSWITH, trimming functions, and string parsing functions. Relevant topics include calculated fields, string functions, Boolean calculations, and text manipulation.
問題 #24
A Tableau associate has a data set that builds a union between two tables. The associate needs to extract the data set.
What should the associate use to extract the data set?
答案：D
解題說明：
The correct configuration is Logical tables that use a single table extract, making C correct. In Tableau's data model, a union operates in the physical layer. The two unioned physical tables are merged into one resulting logical table. Tableau explicitly describes logical tables as containers that can contain multiple physical tables joined or unioned together. When an extract is stored using Logical Tables, Tableau creates one extract table for each logical table in the data source. Because the scenario contains one logical table composed of the two unioned physical tables, the extract is consequently represented as a single extract table. This is different from using Physical Tables storage. Physical storage retains an extract table for each physical table and is subject to additional eligibility restrictions. Tableau's current terminology replaced the older "Single Table" and
"Multiple Tables" extract terminology with Logical Tables and Physical Tables, respectively. Official Tableau documentation states that physical tables joined or unioned inside a logical table are merged as part of that logical table, and that Logical Tables extract storage creates one extract table per logical table. Therefore, a two-table union forming one logical table corresponds to a logical/single-table extract structure.
問題 #25
A Tableau associate has the following legend.
What occurs when the associate clicks the icon to the right of Air Ticketing Cabin Type Name?
答案：B
解題說明：
The icon displayed to the right of the legend title is Tableau's highlighting control. Therefore, clicking it controls legend highlighting, making C the correct answer. Legend highlighting is an interactive analytical feature that allows the viewer to focus on specific marks associated with a selected legend member. When highlighting is enabled and a value such as Business Class or First Class is selected, Tableau emphasizes the corresponding marks while visually dimming unrelated marks. This makes it possible to investigate one category without filtering other categories out of the visualization. Tableau supports both one-way and two- way legend highlighting. The icon displayed at the top of the legend indicates the available highlighting mode. In two-way highlighting, interaction can occur from either the legend or marks in the visualization. The Edit Colors command is accessed through the legend's menu or other color controls, not by clicking this highlighter icon. Likewise, the icon does not expose filter settings and does not hide or display the legend itself. Official Tableau documentation explicitly states that the icon at the top of the legend represents legend highlighting and can be used to control highlighting behavior.
問題 #26
When should a Tableau associate use a relationship instead of a join for two data sets?
答案：B
解題說明：
A relationship is particularly appropriate when the tables being combined contain data at different levels of detail, making D correct. Tableau relationships operate in the logical layer of the data model and preserve each logical table's native granularity. Tableau determines the necessary joins dynamically during analysis according to the fields used in the visualization. This behavior is materially different from a physical join. A join merges records into a single physical table before analysis. If tables have different granularities, a physical join can duplicate measure values or remove records depending on the join structure and matching keys. Relationships reduce that risk because Tableau aggregates relevant information according to each table's natural level of detail before combining results as required by the visualization. Official Tableau guidance explicitly recommends relationships for combining data from different levels of detail. Relationships also preserve independent logical tables rather than flattening them into a single physical table. Option B merely describes where tables reside and does not determine whether a relationship or join is preferable. Options A and C likewise do not identify the principal modeling scenario addressed by relationships. Relevant Tableau Desktop concepts include logical tables, physical tables, relationships, joins, aggregation behavior, and preservation of level of detail.
問題 #27
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