SNOWPRO-CORE Practice Questions: Data Loading and Unloading Domain

Published: August 21, 2025 | 10 min read

Test your SNOWPRO-CORE knowledge with 5 practice questions from the Data Loading and Unloading domain. Includes detailed explanations and answers.

SNOWPRO-CORE Practice Questions

Master the Data Loading and Unloading Domain

Test your knowledge in the Data Loading and Unloading domain with these 5 practice questions. Each question is designed to help you prepare for the SNOWPRO-CORE certification exam with detailed explanations to reinforce your learning.

Question 1

How can you ensure data security when unloading data from Snowflake to an AWS S3 bucket?

A) Use the COPY INTO command with the ENCRYPTION parameter set to 'aws_kms'.

B) Use the COPY INTO command without specifying any encryption options.

C) Use the COPY INTO command with the ENCRYPTION parameter set to 'NONE'.

D) Use the COPY INTO command with the ENCRYPTION parameter set to 'SNOWFLAKE'.

Show Answer & Explanation

Correct Answer: A

Explanation: Option A is correct because specifying 'aws_kms' ensures that the data is encrypted using AWS Key Management Service, providing an additional layer of security. Option B is incorrect because it does not specify encryption, potentially leaving data unprotected. Option C is incorrect because explicitly setting ENCRYPTION to 'NONE' means no encryption is applied. Option D is incorrect because 'SNOWFLAKE' is not a valid option for the ENCRYPTION parameter.

Question 2

Which feature allows you to optimize the cost of data storage by automatically compressing files during the data unloading process?

A) File Compression

B) Data Deduplication

C) Automatic Clustering

D) Data Partitioning

Show Answer & Explanation

Correct Answer: A

Explanation: File Compression is a feature that optimizes storage costs by compressing files during the data unloading process. Data Deduplication, Automatic Clustering, and Data Partitioning are not related to file compression.

Question 3

Which of the following is a best practice for optimizing the performance of data loading into Snowflake?

A) Load data in small batches to avoid resource contention.

B) Use a single large file for loading data to minimize network overhead.

C) Use multiple smaller files for parallel loading.

D) Disable auto-scaling to maintain consistent performance.

Show Answer & Explanation

Correct Answer: C

Explanation: Using multiple smaller files allows Snowflake to load data in parallel, which optimizes performance by utilizing multiple compute resources. Option A is incorrect because loading data in small batches can lead to inefficiencies. Option B is incorrect because a single large file does not leverage parallel processing. Option D is incorrect because disabling auto-scaling can limit the ability to handle varying workloads efficiently.

Question 4

When unloading data from Snowflake to an external stage, which of the following is a best practice to ensure data security?

A) Use a public bucket with no access restrictions for ease of access.

B) Enable encryption using a customer-managed key.

C) Disable compression to simplify data retrieval.

D) Use the default Snowflake encryption with no additional configuration.

Show Answer & Explanation

Correct Answer: B

Explanation: Using a customer-managed key for encryption provides an additional layer of security beyond Snowflake's default encryption. Option A is incorrect as public buckets pose a security risk. Option C is incorrect because compression does not impact security and can reduce storage costs. Option D is less secure than using customer-managed keys.

Question 5

You need to load a large dataset from an AWS S3 bucket into a Snowflake table. Which of the following commands will correctly load the data considering the file format is CSV and you want to skip the first header row?

A) COPY INTO my_table FROM @my_stage FILE_FORMAT = (TYPE = 'CSV' SKIP_HEADER = 1);

B) COPY INTO my_table FROM @my_stage FILE_FORMAT = (TYPE = 'CSV' HEADER = TRUE);

C) COPY INTO my_table FROM 's3://my-bucket/' FILE_FORMAT = (TYPE = 'CSV' SKIP_HEADER = 1);

D) COPY INTO my_table FROM 's3://my-bucket/' FILE_FORMAT = (TYPE = 'CSV' HEADER = TRUE);

Show Answer & Explanation

Correct Answer: A

Explanation: Option A is correct because it uses the correct syntax for specifying a file format with the SKIP_HEADER attribute in Snowflake. Option B is incorrect because HEADER is not a valid attribute in Snowflake's FILE_FORMAT. Option C is incorrect because it doesn't specify a stage; instead, it uses a direct S3 path. Option D is incorrect for the same reason as B, and it also uses a direct S3 path.

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About SNOWPRO-CORE Certification

The SNOWPRO-CORE certification validates your expertise in data loading and unloading and other critical domains. Our comprehensive practice questions are carefully crafted to mirror the actual exam experience and help you identify knowledge gaps before test day.