If you are in search of material that could help you in cracking the Tableau Server interview, then you are in right place. In this blog, we are going to discuss the most frequently asked questions in the tableau Server interview. Having a good grip over these questions would boost your confidence and then you can easily crack the interview. Let's get into the question and answers part.
Today, many MNCs are looking for Professionals who can work on Tableau. This Best of Tableau Server interview questions and answers for 2024 will help you gain expertise in Tableau Server and clear interviews successfully.
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Data visualization is a process of converting data into a graphical format that can be understood by everyone. Visualization of data can be done by using various formats such as charts, maps, and graphs. It is quite challenging to understand the hidden insights or trends in data when it is in text format.
There are many data visualization tools available in the market, and they enable us to see trends, outliers, and patterns in data. Data visualization tools help big data in leveraging its full potentiality.
Tableau server is used for achieving self-service capabilities for your organization. It is mainly helpful for protecting access to published content. This enables the managers to set up groups and user permissions in projects
We have various types of user roles available in the Tableau server. Each level differs in terms of accessibility to sensitive data. Below mentioned are the different types of user roles
Filters help in restricting the data from the database. In the tableau server, we have three types of filters which are
Normal filter: it is used to restrict the data from the database based on the dimensions that have been laid. This filter can be created by simply dragging a filter onto the filter shelf.
Quick filter: the name itself states that it is used to filter the reports dynamically. Using Quick filter one can filter the data on the Dashboards in real-time. You are required to define the range to filter the values during run-time.
Context filter: It is used to filter the data that resides in individual worksheets. Whenever a sheet queries data, it creates a flat temporary table that contains all the values. This temporary table then used to filter the data.
There are few limitations associated with Context filters in the tableau server, which are
Tableau Interview Questions & Answers for 2021
Data blending is a process of bringing the data into one tableau view from multiple sources without writing any special codes. Below mentioned are the areas where Data blending is used.
We have various types of file extensions in tableau which are
For more info: Visit here for Complete Tableau File Extensions
TWB: it is an XML document that is made ready for you for the Tableau workbook. Which contains no data.
TWX: it is a Zipped’ one that contains the data like background images, file extracts, etc.
Tableau can run on Mac and Windows.
Yes, the parameters do have the drop-down list.
There are two ways for it -
Option1 - By using the performance recording feature
Create a performance recording for Tableau Server and Tableau Desktop to interpret the performance recording workbook for Tableau Desktop
Option 2 -
In Tableau Desktop:
In Tableau Server:
For more information: Visit Tableau Server Tutorial |
The data engine is an analytical database designed to receive instant query responses, integrate into existing data infrastructure, achieve predictive performance. Tableau data engine does not really follow in-memory technology. If you are handling a large amount of data, it may take time to import, create indexes and perform actions. Here, RAM is hardly utilized.
The basic difference between the embedded data source and the published data source is as follow -
Tableau Desktop - This is the place where dashboards and reports are created connecting it to the data sources
Tableau Server - This is a platform where reports and dashboards are published for other members to see
Data extracts are the first copies of the actual data fetched from the original data source. Tableau engine uses these data extracts rather than live DB connections to speed up the performance because extracted data is already imported, unlike live DB.
Aggregation and disaggregation are used to develop a scatterplot to compare and measure data values. Aggregation is the calculated form of a group of values that return a single numeric value. It is also possible to set a default aggregation for the values. Disaggregation of data refers to viewing each data source row and analyzing it dependently and independently.
Serialization is a process where an object or data structure is converted into a sequence of bits in order to store them in a file or memory buffer. It can also be transmitted across a network link in the same or another computer environment.
Recursive map: {value: [serialize(left), serialize(right)]}, where serialized leaf is null.
There are two types of user authentications in the Tableau server -
No, it is not possible.
In a Tableau server, the cache is handled in three ways -
Following are the different server processes available in Tableau -
A process of knowing the Tableau server-status automatically through an email whenever the server gets down is called an alert. To configure it, we require an SMTP server.
The different Site roles that are available in Tableau Server are as follows -
SSL stands for Secure Socket Layer that secures information. During data transfer, it encrypts the data, and once data reaches the destination, it will automatically decrypt it. To configure SSL, we need to obtain an SSL certificate file from the third hosting company.
No, Viewers cannot perform filtering.
No, interactor site role users cannot publish the visualization.
Page shelf is a powerful tool used to control the output display. It fragments the view into a series of pages, each having a different view. A user can also flip through pages using specific control to analyze view and analyze data.
Grouping is a collection of multiple members in a single dimension whereas set refers to a collection of members from multidimensional into a dynamic or constant group.
Two of the data roles in Tableau are - discrete and continuous dimensions.
Tableau server is used for publishing the dashboard, stories, and worksheet that are created by the Tableau desktop. After uploading the workbook on the server, you need not have a Tableau server installed in your system. You can simply work with the login credentials.
A hierarchical field drills down data and is used to view data in a more granular level and analyze the data better.
Performance testing can be done with TabJolt, which is a load generator to perform QA. TabJolt is not directly supported by Tableau; users need to install it from other open sources.
Different Tableau files include:
Yes, Tableau is good for strategic acquisition. It is used to get data insight to a great extent that other tools can’t. Also, it allows you to plan and point out the anomalies and improvise processes for the betterment of the organization.
A blended axis is helpful in comparing two measured values against the same axis. There is no need to add columns and rows to the view because when you blend measures, values for each measure is shown along one continuous axis. Multiple measures can be blended by dragging one measure and then dropping it onto an existing axis.
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Vinod M is a Big data expert writer at Mindmajix and contributes in-depth articles on various Big Data Technologies. He also has experience in writing for Docker, Hadoop, Microservices, Commvault, and few BI tools. You can be in touch with him via LinkedIn and Twitter.