Snowflake : DEA-C02 Questions & Answers
Last Updated: Oct 06, 2026
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Snowflake DEA-C02 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Performance Optimization | 15% | - Warehouse Performance
|
| Data Transformation with Snowflake | 30% | - Snowflake Scripting
|
| Data Ingestion and Consumption | 20% | - Bulk Loading and Unloading
|
| Security and Governance | 15% | - Data Security
|
| Data Architecture and Processing | 20% | - Data Modeling for Performance
|
Snowflake SnowPro Advanced: Data Engineer (DEA-C02) Sample Questions:
You need to implement a data masking policy on the 'EMAIL' column of the 'EMPLOYEES' table. The requirement is to redact the entire email address with 'XXXXX' if the user's role is 'PUBLIC'. If the user's role is 'ANALYST', the domain part of the email should be visible, but the username should be redacted. For all other roles, the full email should be visible. Which of the following SQL statements CORRECTLY implements this masking policy?
- A. Option E
- B. Option B
- C. Option D
- D. Option A
- E. Option C
Correct Answer: A 🗳️
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You are building a data pipeline that extracts data from a REST API, transforms it using Pandas DataFrames, and loads it into Snowflake. You need to implement error handling to gracefully handle network issues and API rate limits. Which of the following code snippets demonstrates the most robust approach to handle potential errors during data loading into Snowflake using the Python connector?
- A. Option E
- B. Option B
- C. Option D
- D. Option A
- E. Option C
Correct Answer: E 🗳️
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You need to create a UDF in Snowflake to perform complex data validation. This UDF must access an external API to retrieve validation rules based on the input data'. You want to ensure that sensitive API keys are not exposed within the UDF's code and that the external API call is made securely. Which of the following approaches is the MOST secure and appropriate for this scenario?
- A. Use a Snowflake Secret to securely store the API key. Retrieve the secret within the UDF using the 'SYSTEM$GET_SECRET function, and use 'SECURITY INVOKER with caution or define the UDF as 'SECURITY DEFINER with appropriate role based access controls .
- B. Store the API key in a Snowflake table with strict access controls, and retrieve it within the UDF using a SELECT statement. Use 'SECURITY INVOKER to ensure the UDF uses the caller's privileges when accessing the table.
- C. Store the API key as an environment variable within the UDF's JavaScript code. Snowflake automatically encrypts environment variables for security.
- D. Hardcode the API key directly into the UDF's JavaScript code, obfuscating it with base64 encoding.
- E. Pass the API key as an argument to the UDF when it is called. Rely on the caller to provide the correct key and keep it secure.
Correct Answer: A 🗳️
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You are tasked with creating a development environment from a production database in Snowflake. The production database is named 'PROD DB' and contains several schemas, including 'CUSTOMER DATA' and 'PRODUCT DATA'. You want to create a clone of the 'PROD DB' database named 'DEV DB', but you only need the 'CUSTOMER DATA' schema for development purposes and all the data should be masked with a custom UDF 'MASK EMAIL' for 'email' column in 'CUSTOMER' table. The 'email' column is VARCHAR. Which of the following sequences of SOL statements would achieve this in Snowflake? Note: UDF MASK EMAIL already exists in the account.
- A.
- B.
- C.
- D.
- E.
Correct Answer: B 🗳️
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A data engineer is using the Snowflake Spark connector to write data to a Snowflake table. The write operation fails consistently with the error 'net.snowflake.client.jdbc.SnowflakeSQLException: SQL execution error: String '. ' is too long (maximum is 16777216)'. Which of the following is the most likely cause and how can it be resolved using Spark Connector?
- A. Option E
- B. Option B
- C. Option D
- D. Option A
- E. Option C
Correct Answer: C 🗳️
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