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| Certification Vendor: | Snowflake |
|---|---|
| Exam Name: | SnowPro® Core Certification Exam |
| Exam Number: | COF-C02 |
| Related Certifications: | SnowPro Core Recertification (COF-R02) SnowPro Advanced: Data Engineer SnowPro Advanced: Architect |
| Passing Score: | 750 (scale 0–1000) |
| Exam Price: | 175 USD |
| Exam Format: | Multiple choice, Multiple select |
| Available Languages: | English, Spanish |
| Certificate Validity Period: | 2 years |
| Real Exam Qty: | 100 |
| Exam Duration: | 115 minutes |
| Recommended Training: | Snowflake Documentation & Tutorials Snowflake Official Learning Paths |
| Exam Registration: | Official Registration Pearson VUE Registration |
| Sample Questions: | Snowflake COF-C02 Sample Questions |
| Exam Way: | Online proctored or in-person at Pearson VUE test centers |
| Pre Condition: | No mandatory prerequisites; 6+ months hands-on experience with Snowflake strongly recommended |
| Official Syllabus URL: | https://learn.snowflake.com/en/certifications/snowpro-core/ |
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Snowflake COF-C02 Certification Exam is an industry-recognized credential that showcases the candidate's proficiency in cloud data warehousing. SnowPro Core Certification Exam certification program is ideal for professionals who are looking to enhance their skills in cloud data management and analytics. SnowPro Core Certification Exam certification provides a competitive edge to the candidates over others in the industry and increases their chances of getting hired by top organizations.
NEW QUESTION # 441
How can a user optimize the performance of a COPY INTO < table > query that is being run on a very large file?
Answer: B
Explanation:
The correct answer is A. Split the file into smaller files .
Snowflake can load files in parallel. A single very large file limits parallelism because fewer worker threads can process the load concurrently. Splitting a very large file into multiple smaller files allows Snowflake to load the files in parallel, improving performance.
Why A is correct:
For best loading performance, Snowflake recommends splitting large data files into smaller files of a recommended size range so that the load operation can be parallelized.
Why the other options are incorrect:
B). Increasing the warehouse size can sometimes help, but if the load is constrained by a single very large file, file splitting is the better optimization.
C). SIZE_LIMIT controls the maximum amount of data loaded during a COPY command. It does not improve performance for a very large file.
D). COMPRESSION = AUTO lets Snowflake detect compression type. It does not solve the lack of parallelism caused by a single large file.
Official Snowflake documentation reference:
Snowflake documentation recommends splitting large files into smaller files to increase parallelism and improve load performance.
Reference: Snowflake Documentation - Data loading considerations; Snowflake Documentation - COPY INTO < table > ; SnowPro Core Study Guide - Data Loading and Unloading.
NEW QUESTION # 442
What is a characteristic of a tag associated with a masking policy?
Answer: C
Explanation:
In Snowflake, a tag can be associated with only one masking policy for each data type. This means that for a given data type, you can define a single masking policy to be applied when a tag is used. Tags and masking policies are part of Snowflake's data classification and governance features, allowing for data masking based on the context defined by the tags.
Reference:
Snowflake Documentation: Tag-Based Masking Policies
NEW QUESTION # 443
How long does Snowflake retain information in the ACCESS HISTORY view?
Answer: B
NEW QUESTION # 444
Assume there is a table consisting of five micro-partitions with values ranging from A to Z.
Which diagram indicates a well-clustered table?
Answer: D
Explanation:
A well-clustered table in Snowflake means that the data is organized in such a way that related data points are stored close to each other within the micro-partitions. This optimizes query performance by reducing the amount of scanned data. The diagram indicated by option C shows a well-clustered table, as it likely represents a more evenly distributed range of values across the micro-partitions1.
References = Snowflake Micro-partitions & Table Clustering
NEW QUESTION # 445
A company strongly encourages all Snowflake users to self-enroll in Snowflake's default Multi-Factor Authentication (MFA) service to provide increased login security for users connecting to Snowflake.
Which application will the Snowflake users need to install on their devices in order to connect with MFA?
Answer: D
Explanation:
Snowflake's default Multi-Factor Authentication (MFA) service is powered by Duo Security. Users are required to install the Duo Mobile application on their devices to use MFA for increased login security when connecting to Snowflake. This service is managed entirely by Snowflake, and users do not need to sign up separately with Duo1.
NEW QUESTION # 446
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