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NEW QUESTION 24
Which of the statements is correct when choosing between lakehouse and Datawarehouse?

• A. Traditional Data warehouses are the preferred choice if we need to support ACID, Lakehouse does not support ACID.
• B. Traditional Data warehouses have special indexes which are optimized for Machine learning
• C. Traditional Data warehouses can serve low query latency with high reliability for BI workloads
• D. SQL support is only available for Traditional Datawarehouse's, Lakehouses support Python and Scala
• E. Lakehouse replaces the current dependency on data lakes and data warehouses uses an open standard storage format and supports low latency BI workloads.

Answer: E

Explanation:
Explanation
The lakehouse replaces the current dependency on data lakes and data warehouses for modern data companies that desire:
* Open, direct access to data stored in standard data formats.
* Indexing protocols optimized for machine learning and data science.
* Low query latency and high reliability for BI and advanced analytics.

NEW QUESTION 25
Where are Interactive notebook results stored in Databricks product architecture?

• A. Data plane
• B. Data and Control plane
• C. Databricks web application
• D. JDBC data source
• E. Control plane

Answer: B

Explanation:
Explanation
The answer is Data and Control plane,
Only Job results are stored in Data Plane(your storage), Interactive notebook results are stored in a combination of the control plane (partial results for presentation in the UI) and customer storage.
https://docs.microsoft.com/en-us/azure/databricks/getting-started/overview#--high-level-architecture Snippet from the above documentation, Graphical user interface, application Description automatically generated

How to change this behavior?
You can change this behavior using Workspace/Admin Console settings for that workspace, once enabled all of the interactive results are stored in the customer account(data plane) except the new notebook visualization feature Databricks has recently introduced, this still stores some metadata in the control pane irrespective of the below settings. please refer to the documentation for more details.
Graphical user interface, text, application, email Description automatically generated

Why is this important to know?
I recently worked on a project where we had to deal with sensitive information of customers and we had a security requirement that all of the data need to be stored in the data plane including notebook results.

NEW QUESTION 26
You are designing an analytical to store structured data from your e-commerce platform and un-structured data from website traffic and app store, how would you approach where you store this data?

• A. Data lakehouse can store structured and unstructured data and can enforce schema
• B. Use traditional data warehouse for structured data and use data lakehouse for un-structured data.
• C. Traditional data warehouses are good for storing structured data and enforcing schema
• D. Data lakehouse can only store unstructured data but cannot enforce a schema

Answer: A

Explanation:
Explanation
The answer is, Data lakehouse can store structured and unstructured data and can enforce schema What Is a Lakehouse? - The Databricks Blog Graphical user interface, text, application Description automatically generated

NEW QUESTION 27
What is the purpose of the bronze layer in a Multi-hop Medallion architecture?

• A. Data quality checks, corrupt data quarantined
• B. Powers ML applications
• C. Reduces data storage by compressing the data
• D. Contain aggregated data that is to be consumed into Silver
• E. Copy of raw data, easy to query and ingest data for downstream processes.

Answer: E

Explanation:
Explanation
The answer is, copy of raw data, easy to query and ingest data for downstream processes, Medallion Architecture - Databricks Here are the typical role of Bronze Layer in a medallion architecture.
Bronze Layer:
1. Raw copy of ingested data
2. Replaces traditional data lake
3. Provides efficient storage and querying of full, unprocessed history of data
4. No schema is applied at this layer
Exam focus: Please review the below image and understand the role of each layer(bronze, silver, gold) in medallion architecture, you will see varying questions targeting each layer and its purpose.
Sorry I had to add the watermark some people in Udemy are copying my content.

NEW QUESTION 28
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