Exam (elaborations)

PowerBI Certification Exam 2023 Verified 100%

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PowerBI Certification Exam 2023 Verified 100%
If you want your data to automatically refresh as you interact with visualizations,
which option should you choose?
A) Import
B) DirectQuery
B) DirectQuery

Explanation: When you use DirectQuery, no data is imported into Power BI Desktop. As
you create or interact with a visualization, PowerBI Desktop queries the underlying data
source, i.e. you're always viewing current data.
How do you connect to Excel files that contain target figures? The solution
should involve minimum manual work when new Excel files are created.

A) Connect to the files with Folder connector and use the Combine Binaries
functionality.

B) Connect to a new file each month, perform transformations, and use Append
function in Power Query Editor to combine all targets in the same table.
A) Connect to the files with Folder connector and use the Combine Binaries
functionality.

Explanation: Connecting to files separately will take time if there are lots of files in the
folder. Its always better to connect to folder if files have same structure. If you copy new
files in that folder with same structure, that file will be loaded automatically without doing
any change to data sources.
Imagine that you have created a query named "Customers" in a PowerBI Desktop
to append the rowss from three external tables with customer data into a single
output table named "Customers".

What would be the best approach to add a new fabricated ID column to the
Customers table to ensure that every row in the "Customers" table contains a
unique ID value?

A) Modify the Customer query by adding a counter column.

B) Modify the data model by extending the Customers table with a Counter
column.

C) Modify the customers query by adding an index column.

D) Modify the data model by extending the Customers table with an index column.
C) Modify the Customers query by adding an index column.

,Explanation: Index column option is available in query editor to add indexed column
starting from 0, 1, or custom number.
Which two of the following strategies are recommended when designing the
queries to import data from an OLTP-style database into a Power BI Desktop
project?

A) Normalizing the data model to make it better suited for data analysis and
reporting.

B) Denormalizing the data model to make it better suited for data analysis and
reporting.

C) Refactoring the imported tables into a multidimensional cube.

D) Refactoring the imported tables into a star schema.
B) Denormalizing the data model to make it better suited for data analysis and reporting.

D) Refactoring the imported tables into a star schema.

Explanation: Denormalization and star schema is desired to transform the data in the
format that is best fit for visualizations.
Which of the following statements are true with respect to designing a Power BI
Desktop project in DirectQuery mode?

A) All queries within the project must be from a single source database.

B) No support for parent-child DAX functions.

C) You cannot convert column data types when editing a query.

D) You cannot add measures to the data model.
B) No support for parent-child functions.

Explanation: When in DirectQuery mode, it is not possible to use the family of 'DAX
PATH( )' functions that generally handle parent-child structures, such as chart of
accounts, or employee hierarchies.
Which three transformations are available when you right-click a column header
in the Query Editor window?

A) Remove

B) Duplicate Column

C) Change Type

D) Count Rows

, A) Remove
B) Duplicate Column
C) Change Type
D) Count Rows

Answer: Count Rows option is not there when you right click on column.
When using the "Split Column by Delimiter" transformation, which option may
result in more than two columns?

A) At the left-most delimiter.

B) At each occurrence of the delimiter.

C) At the right-most delimiter.

D) None of the Above.
B) At each occurrence of the delimiter.

Explanation: Using "At each occurrence of the delimiter", number of columns will
depend on number of times a delimiter is used in string/text.
Select the feature that allows you to navigate through HTML tags to get the data
from website?

A) Get JSON Data.

B) Web Scraping.

C) Scaffolding.
B) Web Scraping

Explanation: Web Scraping is the new feature of PowerBI that allows you to navigate
through HTML tags to get data from website.
Client provides you with SQL Server Analysis Service database connectivity with
Multidimensional database structure.

To import data use Get Data -> SQL Server Analysis Service and data will be
imported to Power BI.

Is this statement correct?

A) True
B) False
B) False
A dataset is available in PowerBI service online. Would you be able to import data
from Power BI Service using Get Data --> Power BI dataset?

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PowerBI Certification Exam 2023 Verified 100%

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