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Connecting & Shaping Data - 1

Quiz by Support - BusinessPromoted .com

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20 questions
Show answers
  • Q1
    What is the primary function of Power Query in Power BI?
    To extract, transform, and load data
    To publish reports
    To create visualizations
    To perform direct queries on databases
    60s
  • Q2
    When connecting to a folder in Power BI, what advantage does it offer?
    Automatically appends new files added to the folder
    Allows only one-time data import
    Restricts to a single file type
    Requires manual refresh for new files
    60s
  • Q3
    In Power Query, what is the significance of the "Applied Steps" pane?
    Shows data preview and sample rows
    Lists available data connectors
    Records each transformation step applied to the data
    Displays data profiling statistics
    60s
  • Q4
    How can you handle new columns in a table that may vary each month?
    Create a new query for each month
    Ignore new columns and only process existing ones
    Manually remove unwanted columns each time
    Select columns to keep and remove others automatically
    60s
  • Q5
    What tool in Power Query helps in identifying and managing data errors?
    Data profiling tools
    Connection modes
    Merge queries
    Calendar creation
    60s
  • Q6
    When you need to transform data without altering the original column, which tab should you use?
    View tab
    Home tab
    Transform tab
    Add Column tab
    60s
  • Q7
    In Power BI, what is the default storage mode that caches data for quick queries?
    Composite model
    DirectQuery mode
    Import mode
    Live connection
    60s
  • Q8
    Which feature in Power Query allows you to merge data from different tables into a single table?
    Column transformations
    Append queries
    Table relationships
    Data profiling
    60s
  • Q9
    Why is it important to confirm data types in Power Query after loading data?
    To enable publishing the report
    To ensure accurate data transformation and analysis
    To speed up the data loading process
    To reduce the number of queries
    60s
  • Q10
    How does Power BI handle spaces in table and column names?
    It automatically removes spaces
    It accepts spaces without issues
    It converts spaces to hyphens
    It requires underscores
    60s
  • Q11
    Which tool in Power Query is used to extract data from a specific part of a text string?
    Merge Columns
    Column Distribution
    Text Before Delimiter
    Row Transformation
    60s
  • Q12
    What is the main benefit of using the column quality profiling tool?
    It formats the text data
    It shows the percentage of valid, error, and empty values
    It splits columns based on delimiters
    It merges columns with similar data
    60s
  • Q13
    What is a composite model in Power BI?
    A single mode for high-speed queries
    A live connection to Power BI Service
    A combination of import and DirectQuery modes
    A method to transform text columns
    60s
  • Q14
    How can you automate data cleansing processes in Power Query?
    By writing SQL queries
    By using applied steps that repeat each time data is refreshed
    By manually updating data each time
    By using DAX functions
    60s
  • Q15
    What should you do if Power BI does not correctly identify header rows in your data?
    Change the data source
    Remove the data and reload
    Ignore the headers
    Manually promote header rows
    60s

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