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TDA-C01考試證照，TDA-C01熱門考古題

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最新的 Tableau Certified TDA-C01 免費考試真題 (Q14-Q19):

問題 #14
You are developing a data source in Tableau Prep.
You have two tables named Orders and Employees.
The Orders table was created in 2019 and contains the following columns.

The Employees table contains all the employee information for the various sales teams in the sales department and contains the following columns

You want to prepare the data so that you can analyze sales trends over time for every sales team.
Which three actions should you perform in order? (Place the three correct options in order. Use the arrows to move Options to Answer Area. Use Answer Area arrows to re-order the options.)

答案：

解題說明：

Explanation:

There are different ways to prepare the data in Tableau Prep, but one possible answer is:
Answer area:
Join the tables.
Aggregate the data by Sales Team.
Add the following filter to the Employees table: Sale Team - Team Alpha.
To analyze sales trends over time for every sales team, you need to combine the data from the Orders and Employees tables. You can do this by joining the tables on the Rep ID column, which is a common identifier for both tables. This will create a single table with all the columns from both tables. Next, you need to aggregate the data by Sales Team, which is the level of analysis you want. You can do this by grouping the data by the Sales Team column and applying an aggregation function (such as sum, average, count, etc.) to the other columns that you want to measure (such as Total Amount, Rep Tenure, etc.). This will create a summary table with one row for each sales team and the aggregated values for the other columns. Finally, you need to filter the data to focus on a specific sales team, such as Team Alpha. You can do this by adding a filter to the Employees table and selecting only the rows where Sales Team equals Team Alpha. This will remove the rows for other sales teams and keep only the data for Team Alpha.
References:
[Tableau Certified Data Analyst Exam Prep Guide], page 9, section "Preparing Data"
[Tableau Help: Join Your Data]
[Tableau Help: Aggregate Your Data]
[Tableau Help: Filter Your Data]

 

問題 #15
You need to change the values of a dimension without creating a new field.
What should you do?

• A. Transforms the fields
• B. Create groups
• C. Rename the fields
• D. Create aliases

答案：D

解題說明：
You can create aliases for the members of a dimension by right-clicking the dimension in the Data pane or in the view and selecting Aliases. This changes how the values are displayed in the view, but not the underlying data. For example, you can create an alias for "Central" as "Midwest".
In Tableau, aliases can be used to change the way dimension members appear without altering the underlying data. This is useful for display purposes and does not create a new field within the dataset.

 

問題 #16
You have the following dataset.

Which Level of Detail (LOD) expression should you use to calculate tie grand total of all the regions?

• A. {FIXED: TOTAL (Sales)}
• B. {FIXED: [Region] SUM Sales}
• C. {FIXED: SUM Sales}
• D. {Fixed: [Region]: TOTAL Sales}

答案：A

解題說明：
To calculate the grand total of all the regions, you need to use a Level of Detail (LOD) expression that ignores any dimensions in the view and returns the total sum of sales. The FIXED keyword allows you to specify the level of detail for the calculation, and the TOTAL function returns the sum of all values in the expression. Therefore, the correct LOD expression is {FIXED: TOTAL (Sales)}. Reference: https://help.tableau.com/current/pro/desktop/en-us/calculations_calculatedfields_lod.htm https://help.tableau.com/current/pro/desktop/en-us/functions_functions_tablecalculation.htm#TOTAL

 

問題 #17
A Data Analyst has received a request to provide a dashboard related to employee time logs. The employees are entering their time using mobile devices throughout the day and data is stored in a cloud-based database.
The end users would like to receive data on their dashboard in as close to real-time as possible.
How should the analyst best create a data source to meet these requirements?

• A. Create a connection to the database using Tableau Desktop. Publish the data source to Tableau Cloud using a live connection, ensuring the database firewall has been configured to allow connections from Tableau Cloud.
• B. Create a connection to the database to retrieve the data using Tableau Bridge. Schedule the refresh of the data extract to 15 minutes.
• C. Create a connection to the database using Tableau Desktop and retrieve an extract of the data. Publish the data source from Tableau Desktop to Tableau Cloud and schedule the refresh of the extract.
• D. Create a connection to the database using Tableau Desktop. Publish the data source to Tableau Cloud using a live connection and disable any firewalls on the database.

答案：A

 

問題 #18
From Tableau Desktop you sign in lo a Tableau Server site.
What appears in the list of available data sources when you search for a published data source?

• A. All the data sources published to the Tableau Server
• B. All the data sources published to the site within the folders to which you have access
• C. All the data sources published to the Tableau Server within the folders to which you have access
• D. All the data sources published to the site

答案：B

解題說明：
When you sign in to a Tableau Server site from Tableau Desktop and search for a published data source, you will see all the data sources published to the site within the folders to which you have access. You will not see data sources published to other sites or folders that you do not have permission to view. You can also filter your search by project, owner, or tag. Reference: https://help.tableau.com/current/pro/desktop/en-us/connect_basic.htm https://help.tableau.com/current/pro/desktop/en-us/connect_tableauserver.htm

 

問題 #19
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