Top 20 Tableau Server Interview Questions & Answers [For Freshers & Experienced]
Updated on Sep 04, 2023 | 11 min read | 11.3k views
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Updated on Sep 04, 2023 | 11 min read | 11.3k views
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Tableau is amongst the most used BI tools across the world. It is used to connect to data and visualize and create interactive dashboards.
In this blog, you will find some of the most essential Tableau server interview questions and answers to brush up your Tableau skills and crack the job interview to land in your dream company. So, without any further ado, let’s get started.
Let us look at some of the top Tableau Server interview questions that can be asked in the Tableau Admin Interview:
1. What is data visualization?
Data Visualization is the conversion of data into a graphical format that everyone can easily understand. It can be done through various formats such as charts, maps, and graphs. Data visualization is used to identify the trends, outliers, and patterns in the data.
2. List the file extensions in Tableau.
We have different kinds of file types and extensions in Table. A few of these are:
3. What are the different site roles present in a Tableau server? Can the interactor publish the visualizations?
The different types of roles available in the Tableau server are as follows:
No, an interactor cannot be able to publish the visualizations.
4. What is the disadvantage of context filters?
The user does not frequently change the Context Filter. In case the Filter is changed, the database must be recomputed, and the temporary table has to be rewritten. This process slows down the performance.
When we set a dimension to context, Tableau creates a temporary table that needs a reload each time the view is initiated.
5. How many maximum tables can you join in Tableau?
In Tableau, we can join a maximum of 32 tables.
Read: Tableau Interview Questions
6. What is an Alert, and how do you configure Alerts in the Tableau server?
Alert is a process of automatically knowing the Tableau server-status in the form of an email if the server gets down. If we wish to configure the Alerts in the Tableau server, we need an SMTP (Simple Mail Transfer Protocol) server.
7. What is a Choropleth Map?
A choropleth map is used to show divided geographic areas that are colored, shaded, or patterned concerning a data variable. It is used to visualize values over a geographical area to find out patterns across the displayed location.
8. What is SSL, and how do we configure SSL?
SSL is the short form for Secured Socket Layer. SSL secures the information while transforming over the network – by converting it into an encrypted format. Once the information reaches the target, SSL will automatically decrypt it.
To configure the SSL, we need an SSL certificate file. We can get this certificate file from a 3rd-party hosting company such as NORTON.
9. Explain the limitations of the parameters of Tableau.
The Tableau’s parameters can only be represented in four ways on a dashboard. Also, these parameters do not allow any further multiple selections in a filter.
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10.How can you view the underlying SQL queries in Tableau?
We have two methods to view the underlying SQL queries in Tableau. They are:
Help> Settings and Performance > Start Performance Recording
11.How do you handle null and other special values in Tableau?
When we have null values, zeroes, or negative values on a logarithmic axis, Tableau cannot plot them. It displays an indicator at the lower right corner of the view, and we can click on the indicator to choose one of the following options:
12.How to get the current date in Tableau?
We can get the current date and time in Tableau using the NOW() function.
13.What are the shelves?
A shelve is an area of the visualization display where parts of information can be dropped to make sure that Tableau acts on them. When we place a dimension on the rows or columns’ shelves, headers are generated for the members.
In Tableau, we have four kinds of shelves:
Read: 6 Types of Filters in Tableau: How You Should Use Them
14.What is the difference between data blending and join?
In SQL terms, Join is used to combine two data sources into a single data source. While Blending is a Tableau term used to refer to combining two data sources into an available chart.
A significant difference between these terms is that a join is applied once at the data source and used for every chart, while a blend is done individually for every chart.
15.What is the Tableau Data Engine?
The Tableau data engine is one of the fantastic features of Tableau. It is an analytical database designed to achieve instant query response, predictive performance and integrate seamlessly into existing data infrastructure.
When dealing with a massive amount of data, it takes some time to create indexes, import, and sort data, but after that, the process speeds up. The data is stored on disk once it is imported, and the RAM is hardly utilized.
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16.What are the advantages associated with Tableau?
Some of the top benefits of using Tableau are:
17.What is Assume Referential Integrity?
In database terms, each row in the certainty table has a combination row in the measurement table. Using this strategy, we create primary and foreign keys to join the tables.
By using Assume Referential Integrity, we tell Tableau that the joined tables have referential integrity. We confirm that the table will dependably have a coordinating row in the Dimension table in simpler terms.
18.Why do we use the mark card in Tableau?
The Mark card is an essential element for the visual inspection in Tableau. When we drag fields to different Marks card properties, we add setting and details to the view marks.
Later, we can use the Marks Card to set the mark as write and encode our information with size, color, text, shape, and details.
19.Does Tableau allows the automation of reports?
Yes, Tableau allows the automation of reports. To automate any report, we need to publish the concerned report to the Tableau server.
20.What are the two ways to connect with the dataset?
We have two methods to make a connection with the dataset:
21.What are the various user roles in Tableau?
Tableau offers various user roles to manage and control access to the tool. Some of the common user roles in Tableau are:
22.What are the file extensions associated with Tableau?
Tableau uses different file extensions for various purposes. Here are some of the common file extensions you will come across while working with Tableau:
23.What is a Tableau Reader?
Tableau Reader is a free application that allows users to open and view Tableau workbooks without the Tableau license needed. It enables users to interact with the visualizations and explore the data, but they cannot modify or create new visualizations.
24.What distinguishes Tableau from other business intelligence tools?
The key distinction between Tableau and standard BI is the level of expertise necessary to utilize both. Tableau does not require any coding or BI experience to examine data.
25.What are Tiled and Floating Dashboards?
When creating dashboards in Tableau, you can choose between two layout options: Tiled and Floating.
Also Read: How To Pick The Right Tableau Product For Your Requirement?
Following are the top tableau scenario based interview questions for experienced professionals:
1. Can You Optimize the Performance of a Dashboard?
Yes, to optimize the performance of a Tableau dashboard, i perform these best practices:
2. If my license expires today, would users be able to see dashboards or workbooks that I previously put on the server?
Yes, even if your Tableau license expires, users will still be able to see the dashboards and workbooks you published on the server earlier. However, they won’t be able to make any changes or create new visualizations without an active Tableau license.
Tableau has garnered interest among the people from all sectors such as business, researchers, different industries, etc. If you have been aspiring to make a career ahead in Tableau, you need to prepare well to crack the interview process.
We hope that these Tableau server interview questions and answers are helpful to you.
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