Projecting a multi-dimensional dataset onto which vector has the greatest variance?

• A.first principal component
• B.first eigenvector
• C.not enough information given to answer
• D.second eigenvector
• E.second principal component

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Once a cluster is deleted, below additional actions need to performed by the administrator

• A.Remove virtual machines but storage and networking are automatically dropped
• B.Drop storage disks but Virtual machines and networking are automatically dropped
• C.Remove networking but Virtual machines and storage disks are automatically dropped
• D.Remove logs
• E.No action needs to be performed. All resources are automatically removed.

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How do you handle failures gracefully when writing code in Pyspark, fill in the blanks to complete the below statement
1._____
2.
3. Spark.read.table("table_name").select("column").write.mode("append").SaveAsTable("new_table_name")
4.
5._____
6.
7. print(f"query failed")

• A.try: failure:
• B.try: catch:
• C.try: except:
• D.try: fail:
• E.try: error:

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A data engineer needs to dynamically create a table name string using three Python varia-bles: region, store,
and year. An example of a table name is below when region = "nyc", store = "100", and year = "2021":
nyc100_sales_2021
Which of the following commands should the data engineer use to construct the table name in Py-thon?

• A.f"{region}+{store}+_sales_+{year}"
• B."{region}{store}_sales_{year}"
• C."{region}+{store}+"_sales_"+{year}"
• D."{region}+{store}+_sales_+{year}"
• E.f"{region}{store}_sales_{year}"

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You are asked to set up an alert to notify in an email every time a KPI indicater increases beyond a threshold value, team also asked you to include the actual value in the alert email notification.

• A.Use notebook and python code to run every minute, using python variables to capture send the information in an email
• B.Setup an alert but use the default template to notify the message in email's subject
• C.Setup an alert but use the custom template to notify the message in email's subject
• D.Use the webhook destination instead so alert message can be customized
• E.Use custom email hook to customize the message

Correct Answer: C

Explanation
Alerts support custom template supports using variables to customize the default message, set up the query to compare the KPI current value to the threshold and use the variable QUE-RY_RESULT_VALUE to display the value in the email notification.
here is a simple alert, that uses variables in the custom template to present these values in the email notification message, when the alert is fired these variables get replaced with actual values.
Alert with custom template
Graphical user interface, application Description automatically generated

When you enable preview you can see how the alert looks when you substitute the variables.
Graphical user interface, text, application, email Description automatically generated

Below are additional template variables available to you with the custom template.
Alerts | Databricks on AWS
Graphical user interface, text, application, email Description automatically generated

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