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Snowflake NAS-C01 Exam Syllabus Topics:

Section	Weight	Objectives
Snowflake Native Applications Deployment	25%	- Build, version, and release native applications 1. Use Snowflake's marketplace 2. Use data sharing for app interoperability
Snowflake Native Applications Installation and Testing	20%	- Install and test native applications 1. Validate application functionality and performance
Snowflake Native App Framework Overview	20%	- Understand Snowflake architecture, features, tools, and best practices 1. Data sharing and protection mechanisms 2. Account security and access management 3. Cloud-based computing and storage concepts
Snowflake Native Applications Design and Creation	35%	- Create and manage billing events and cost monitoring techniques 1. Formulate Snowflake native application workflows and procedures - Apply Snowflake best practices while building native application workloads 1. Build, distribute, and monetize apps in Snowflake 2. Design scalable applications

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Snowflake SnowPro Specialty - Native Apps Sample Questions (Q236-Q241):

NEW QUESTION # 236
A Native App developer is using Snowflake's Event Tables for tracing the execution of their application. They have noticed a significant performance overhead when event logging is enabled, particularly for high-volume UDFs. Which of the following strategies would be MOST effective in mitigating the performance impact of event logging while still capturing valuable tracing information?

A. Reduce the number of columns captured in the event tables to minimize the amount of data being written. Store all tracing data in a single large event table to simplify querying.
B. Write event data directly to an external cloud storage system (e.g., AWS S3, Azure Blob Storage) bypassing Snowflake's Event Tables altogether.
C. Increase the frequency of event table flushes to reduce the number of events buffered in memory. This minimizes memory pressure and write latency.
D. Disable event logging entirely for high-volume UDFs to eliminate the performance overhead.
E. Implement sampling or conditional logging within the UDFs, only logging events for a subset of executions or when specific conditions are met. Utilize asynchronous logging techniques where appropriate to offload logging operations.

Answer: E

Explanation:
Option C offers the best balance between performance and valuable tracing information. Sampling allows you to reduce the volume of events logged, while conditional logging ensures that only relevant events are captured. Asynchronous logging further minimizes the performance impact. Option A is not desirable as it eliminates tracing altogether. Option B will not reduce overhead. Option D is a good strategy but doesn't address high logging volumes. Option E may not be compliant or possible.

NEW QUESTION # 237
Your team is developing a Snowflake Native App that requires access to network resources outside of Snowflake. After configuring an external access integration, you encounter an error indicating that the application cannot access the specified endpoint, even though the integration appears to be correctly configured. Assuming all network policies are in place and the external access integration is correctly defined, what is the MOST likely cause of this issue and how can it be resolved?

A. The network policy attached to the external access integration is too restrictive and is blocking access to the required endpoint. Review and update the network policy to allow access to the endpoint.
B. The application role used by the application lacks the ' IMPORTED PRIVILEGES privilege on the external access integration. Grant this privilege using 'GRANT IMPORTED PRIVILEGES ON INTEGRATION TO APPLICATION ROLE
C. The URL specified in the external access integration is incorrect or contains a typo. Verify the URL and ensure it matches the expected endpoint.
D. The application needs to be explicitly granted the USAGE privilege on the external access integration. Use 'GRANT USAGE ON INTEGRATION TO APPLICATION ROLE
E. The external function or procedure attempting to use the integration has not been granted the REFERENCE USAGE privilege on the integration. Use 'GRANT REFERENCE USAGE ON INTEGRATION TO PROCEDURE ;

Answer: B,E

Explanation:
The application role needs 'IMPORTED PRIVILEGES on the external access integration to utilize its settings (A). Also, the specific external functions or procedures within the application that are leveraging the external access integration require the 'REFERENCE USAGE privilege on the integration (E). Without both privileges granted, the application won't be able to access the external resources defined in the integration. Option B 'USAGE' is not the correct privilege for external access integrations. While options C and D could be potential issues, they are less likely if the integration appears to be correctly configured.

NEW QUESTION # 238
You're developing a Snowflake Native App. Part of your application logic involves using a UDF (User-Defined Function) to perform complex calculations on data residing in a table within the consumer's Snowflake account. Which of the following statements correctly describes how you would package and deploy this UDF within your Native App using the application package?

A. The UDF definition must be created as an external function, pointing to an external API endpoint that your application controls, enabling the UDF logic to be executed outside of the consumer's Snowflake environment.
B. The UDF definition must be created directly within the consumer's account after the application is installed, as UDFs cannot be included in the application package.
C. You must create the UDF within a schema in your application package, and grant USAGE privilege on the schema to the application role. The application code can then execute the UDF without any further privilege grants within the consumer account, and the UDF can be called from SQL or other UDFs using unqualified names.
D. You must create the UDF within a schema in your application package. No additional privileges need to be granted, as the application role automatically has all necessary privileges within the application's namespace.
E. You must create the UDF within a schema in your application package, and grant USAGE privilege on the schema to the application role. The consumer will automatically be granted EXECUTE privilege on the UDF.

Answer: C

Explanation:
The UDF needs to be created within a schema in the application package. The application role needs USAGE privilege on the schema containing the UDF, and the application can then execute the UDF.

NEW QUESTION # 239
You are developing a Native App on Snowflake that collects usage data from consumer accounts. You need to store this data securely and efficiently, and you anticipate that the volume of data will grow rapidly. Which of the following strategies would you consider to OPTIMIZE storage and query performance for this usage data within the application?

A. Implement a data retention policy to automatically purge older usage data that is no longer needed.
B. Create separate tables for each consumer account to store their usage data.
C. Use clustering keys on columns commonly used in queries, such as timestamp and consumer account ID. Consider data compression options if available.
D. Partition the usage data table by consumer account ID to isolate data from different consumers.
E. Store all usage data in a single table and rely on Snowflake's automatic clustering to handle performance.

Answer: A,C

Explanation:
Implementing a data retention policy reduces storage costs and improves query performance by removing unnecessary data. Using clustering keys optimizes query performance by physically organizing the data based on frequently queried columns. Storing all data in a single table (A) may lead to performance issues as the table grows. Partitioning (B) doesn't exist in Snowflake. Creating separate tables per account (C) can become unmanageable at scale.

NEW QUESTION # 240
A Snowflake Native Application uses a task 'aggregate_data' to aggregate dat a. This task is owned by the 'app_public' role and executes a stored procedure 'aggregate data proc'. Consumers have reported the task sometimes fails intermittently, citing permission issues, specifically related to accessing a specific table in the consumer account. The application provider has granted 'SELECT' privilege on the table to the 'app_public' role. However, the failures persist. What is the MOST LIKELY cause of the intermittent failures related to executing the task?

A. The task 'aggregate_data' is executing with definer's rights (OWNER) of the application, so the grant of SELECT privilege to 'app_public' is sufficient, and there is likely an issue with transient network connectivity.
B. The stored procedure is executed with caller's rights (CALLER), and the 'EXECUTE TASK privilege wasn't granted correctly, which causes the user to randomly lose access on the Snowflake Ul.
C. The stored procedure is executed with caller's rights (CALLER), but the application role 'app_public' doesn't have sufficient warehouse privileges in the consumer account.
D. The stored procedure is executed with definer's rights (OWNER), so the privilege check occurs against the application provider's account, not the consumer's account.
E. The stored procedure is executed with caller's rights (CALLER), but the application role 'app_public' doesn't have the ACTIVATION privilege on the task.

Answer: D

Explanation:
When a stored procedure is executed by a task, the stored procedure runs with the rights of the OWNER by default. This means that even if you grant 'SELECT privilege on the table to 'app_public' (the task's role), if the stored procedure is executing with definer's rights, it is checking the privileges in the application provider's account, not the consumer's. Therefore, the application provider's account needs to have SELECT privilege on the table. It is unlikely there is any issues related to warehouse rights, or that they would resolve transient network connectivity issues. The EXECUTE TASK' privilege only relates to being able to execute the task, not what the task can access.

NEW QUESTION # 241
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