【評判】Practice Exams | Microsoft Azure DP-203 Data Engineering

Exam DP-203: Data Engineering on Microsoft Azure
Design and Implement Data Storage
Design a partition strategy
Design the serving layer
Implement physical data storage structures
Implement logical data structures
Implement the serving layer
Ingest and transform data
Design and develop a batch processing solution
Design and develop a stream processing solution
Manage batches and pipelines
Design security for data policies and standards
Implement data security
Monitor data storage and data processing
Optimize and troubleshoot data storage and data processing

In order to set realistic expectations, please note: These questions are NOT official questions that you will find on the official exam. These questions DO cover all the material outlined in the knowledge sections below. Many of the questions are based on fictitious scenarios which have questions posed within them.

The official knowledge requirements for the exam are reviewed routinely to ensure that the content has the latest requirements incorporated in the practice questions. Updates to content are often made without prior notification and are subject to change at any time.

Each question has a detailed explanation and links to reference materials to support the answers which ensures accuracy of the problem solutions.

The questions will be shuffled each time you repeat the tests so you will need to know why an answer is correct, not just that the correct answer was item "B" last time you went through the test.

NOTE: This course should not be your only study material to prepare for the official exam. These practice tests are meant to supplement topic study material.

Should you encounter content which needs attention, please send a message with a screenshot of the content that needs attention and I will be reviewed promptly. Providing the test and question number do not identify questions as the questions rotate each time they are run. The question numbers are different for everyone.

As a candidate for this exam, you should have subject matter expertise in integrating, transforming, and consolidating data from various structured, unstructured, and streaming data systems into a suitable schema for building analytics solutions.

As an Azure data engineer, you help stakeholders understand the data through exploration, and build and maintain secure and compliant data processing pipelines by using different tools and techniques. You use various Azure data services and frameworks to store and produce cleansed and enhanced datasets for analysis. This data store can be designed with different architecture patterns based on business requirements, including:

• Management data warehouse (MDW)

• Big data

• Lakehouse architecture

As an Azure data engineer, you also help to ensure that the operationalization of data pipelines and data stores are high-performing, efficient, organized, and reliable, given a set of business requirements and constraints. You help to identify and troubleshoot operational and data quality issues. You also design, implement, monitor, and optimize data platforms to meet the data pipelines.

As a candidate for this exam, you must have solid knowledge of data processing languages, including:

• SQL

• Python

• Scala

You need to understand parallel processing and data architecture patterns. You should be proficient in using the following to create data processing solutions:

• Azure Data Factory

• Azure Synapse Analytics

• Azure Stream Analytics

• Azure Event Hubs

• Azure Data Lake Storage

• Azure Databricks

Skills at a glance

• Design and implement data storage (15–20%)

• Develop data processing (40–45%)

• Secure, monitor, and optimize data storage and data processing (30–35%)

Design and implement data storage (15–20%)

Implement a partition strategy

• Implement a partition strategy for files

• Implement a partition strategy for analytical workloads

• Implement a partition strategy for streaming workloads

• Implement a partition strategy for Azure Synapse Analytics

• Identify when partitioning is needed in Azure Data Lake Storage Gen2

Design and implement the data exploration layer

• Create and execute queries by using a compute solution that leverages SQL serverless and Spark cluster

• Recommend and implement Azure Synapse Analytics database templates

• Push new or updated data lineage to Microsoft Purview

• Browse and search metadata in Microsoft Purview Data Catalog

Develop data processing (40–45%)

Ingest and transform data

• Design and implement incremental loads

• Transform data by using Apache Spark

• Transform data by using Transact-SQL (T-SQL) in Azure Synapse Analytics

• Ingest and transform data by using Azure Synapse Pipelines or Azure Data Factory

• Transform data by using Azure Stream Analytics

• Cleanse data

• Handle duplicate data

• Avoiding duplicate data by using Azure Stream Analytics Exactly Once Delivery

• Handle missing data

• Handle late-arriving data

• Split data

• Shred JSON

• Encode and decode data

• Configure error handling for a transformation

• Normalize and denormalize data

• Perform data exploratory analysis

Develop a batch processing solution

• Develop batch processing solutions by using Azure Data Lake Storage, Azure Databricks, Azure Synapse Analytics, and Azure Data Factory

• Use PolyBase to load data to a SQL pool

• Implement Azure Synapse Link and query the replicated data

• Create data pipelines

• Scale resources

• Configure the batch size

• Create tests for data pipelines

• Integrate Jupyter or Python notebooks into a data pipeline

• Upsert data

• Revert data to a previous state

• Configure exception handling

• Configure batch retention

• Read from and write to a delta lake

Develop a stream processing solution

• Create a stream processing solution by using Stream Analytics and Azure Event Hubs

• Process data by using Spark structured streaming

• Create windowed aggregates

• Handle schema drift

• Process time series data

• Process data across partitions

• Process within one partition

• Configure checkpoints and watermarking during processing

• Scale resources

• Create tests for data pipelines

• Optimize pipelines for analytical or transactional purposes

• Handle interruptions

• Configure exception handling

• Upsert data

• Replay archived stream data

Manage batches and pipelines

• Trigger batches

• Handle failed batch loads

• Validate batch loads

• Manage data pipelines in Azure Data Factory or Azure Synapse Pipelines

• Schedule data pipelines in Data Factory or Azure Synapse Pipelines

• Implement version control for pipeline artifacts

• Manage Spark jobs in a pipeline

Secure, monitor, and optimize data storage and data processing (30–35%)

Implement data security

• Implement data masking

• Encrypt data at rest and in motion

• Implement row-level and column-level security

• Implement Azure role-based access control (RBAC)

• Implement POSIX-like access control lists (ACLs) for Data Lake Storage Gen2

• Implement a data retention policy

• Implement secure endpoints (private and public)

• Implement resource tokens in Azure Databricks

• Load a DataFrame with sensitive information

• Write encrypted data to tables or Parquet files

• Manage sensitive information

Monitor data storage and data processing

• Implement logging used by Azure Monitor

• Configure monitoring services

• Monitor stream processing

• Measure performance of data movement

• Monitor and update statistics about data across a system

• Monitor data pipeline performance

• Measure query performance

• Schedule and monitor pipeline tests

• Interpret Azure Monitor metrics and logs

• Implement a pipeline alert strategy

Optimize and troubleshoot data storage and data processing

• Compact small files

• Handle skew in data

• Handle data spill

• Optimize resource management

• Tune queries by using indexers

• Tune queries by using cache

• Troubleshoot a failed Spark job

• Troubleshoot a failed pipeline run, including activities executed in external services