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NAS-C01 Zertifikatsdemo, NAS-C01 Tests, NAS-C01 Quizfragen Und Antworten, NAS-C01 Lernressourcen, NAS-C01 Online Prüfung

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Snowflake SnowPro Specialty - Native Apps NAS-C01 Prüfungsfragen mit Lösungen (Q112-Q117):

112. Frage
A company publishes a Snowflake Native Application on the Snowflake Marketplace providing aggregated sales dat a. They want to ensure data is fresh and updated daily at 00:00 UTC. They are considering several approaches to automate this data refresh process.
Which of the following methods are MOST effective and SECURE for scheduling and executing this daily data update within the Snowflake Native Application environment? Choose two.

  • A. Implement a Java-based scheduler within the Snowflake Native Application itself using UDFs, triggered by an external service via API integration.
  • B. Schedule a Python script using an external task service (e.g., AWS Lambda) that connects to Snowflake and executes the data refresh procedure.
  • C. Utilize a cron job on a virtual machine to execute a SQL script via SnowSQL, connecting to Snowflake and refreshing the data.
  • D. Use Snowflake Tasks scheduled to run daily at 00:00 UTC to execute a stored procedure within the Native Application that updates the data.
  • E. Leverage Snowflake's Data Marketplace update scheduling feature (if available and applicable to their type of listing) to automatically refresh the data.

Antwort: D,E

Begründung:
Snowflake Tasks provide a secure and managed way to schedule tasks within the Snowflake environment. Leveraging Data Marketplace update scheduling (if available) is the most direct and efficient method. External task services and cron jobs introduce external dependencies and security concerns, and Java schedulers within UDFs are less common and can be complex to manage.


113. Frage
You are designing a Snowflake Native Application that provides a data enrichment service. Consumers provide their data via a secure data share, and your application enriches it with external datasets within your provider account. To ensure data security and prevent accidental data leakage, which of the following strategies should you implement when designing the application's logic (select all that apply)?

  • A. Use fully qualified names when referencing objects within the consumer's shared data (e.g.,
  • B. Log all data access and modifications performed by the application, including the user context (application role), timestamps, and objects accessed, for auditing purposes.
  • C. Grant the consumer's application role 'OWNERSHIP' privilege on the data share. This simplifies data management for the consumer.
  • D. Implement strict input validation and sanitization of the data received from the consumer to prevent SQL injection or other malicious attacks that could lead to data exfiltration.
  • E. Create a dedicated service user within your provider account with restricted privileges to access the shared data. The application's logic should execute using this service user's context.

Antwort: A,B,D

Begründung:
Options B, D, and E are correct. B: using fully qualified names is crucial for unambiguously identifying the consumer's objects and preventing naming conflicts. D: Input validation is essential to protect against security vulnerabilities. E: Logging is vital for auditing and identifying potential security breaches. A is incorrect because granting ownership is excessive and insecure; the consumer should retain ownership. C is unnecessary and doesn't directly address the security concerns; using the application role provides sufficient context.


114. Frage
A provider develops a Snowflake Native Application that requires access to consumer's 'ORDERS' table for data enrichment. The provider has created an object role 'app_role'. Which of the following steps are REQUIRED for the application to successfully access and query the 'ORDERS table in the consumer's environment during the installation phase?

  • A. The consumer grants USAGE privilege on the schema containing the 'ORDERS' table to the provider account.
  • B. The consumer creates a new role, grants SELECT on the 'ORDERS' table to this role, and then grants the role to the application's 'app_role' in the consumer account. The application manifest specifies the consumer_role.
  • C. The consumer grants IMPORTED PRIVILEGES on the share containing the 'ORDERS table to the 'app_role' in the provider account.
  • D. The consumer grants USAGE privilege on the database containing the 'ORDERS' table to the provider account.
  • E. The provider grants OWNERSHIP on the 'app_role' role to the application.

Antwort: B

Begründung:
Option D is correct. To access the 'ORDERS' table, the consumer must grant necessary privileges to the application's 'app_role' within their account. Creating a new role, granting SELECT on the table to this role, and then granting the role to the application's role is the correct procedure. Options A, C, and E are incorrect because direct granting of privileges to the provider account is not the right way to provide application access, since Native Apps have to be securely isolated. Option B is incorrect because ownership transfer is generally not related to access within the consumer account.


115. Frage
You are developing a Snowflake Native Application with a complex custom billing model. Your application measures several consumption metrics, including data processed, API calls, and unique users. You want to offer consumers flexible pricing plans that combine fixed monthly fees with usage-based charges, and provide detailed invoices. What is the most appropriate way to construct your Snowflake native application to perform the custom billing?

  • A. Utilize Snowflake's resource monitors to track overall consumption and apply a fixed cost per resource unit consumed.
  • B. Develop a separate application outside of Snowflake to poll the application's internal tables for usage metrics and perform all billing calculations externally.
  • C. Develop stored procedures within the application to measure each metric, apply the complex pricing logic, and generate invoices directly within Snowflake as JSON documents. Offer these invoices as output from a 'GET INVOICE stored procedure exposed to the customer.
  • D. Use Snowflake's native metering functions to calculate storage and compute costs, and manually calculate the other metrics outside of Snowflake. Combine these values to generate the invoices using an external billing system.
  • E. Implement all metering logic within stored procedures in your Snowflake Native App package. Create a scheduled task that runs daily to calculate the billing amounts and store them in a billing table. Use Snowflake's data sharing to expose billing information to an external billing system.

Antwort: C

Begründung:
Option E offers the most comprehensive and integrated solution. All calculations and invoice generation occur within Snowflake, leveraging its capabilities. Options A, B, and D delegate key aspects of billing to external systems, complicating the process and potentially introducing security risks. Relying solely on Snowflake's resource monitors (C) does not provide granular control over usage-based charges for diverse metrics. Keeping everything within the native app package allows for optimal control and integration.


116. Frage
You have a Snowflake Native Application that utilizes a managed table. After upgrading your application to version 2.0, some users report that they are missing data in the managed table. After investigation, you realize version 2.0 changed the schema of the managed table and also did not properly migrate all the data from old format into new format. Which of the following steps should be taken to address the missing data after upgrading a Snowflake Native Application?

  • A. Since managed tables are fully managed by Snowflake, contact Snowflake support to initiate a data recovery process in each affected consumer account.
  • B. Create a new version 2.1 that includes a data migration script to transfer data from the old schema (as it existed in version 1.0) to the new schema in version 2.0. Use release directives to upgrade affected users to version 2.1 after staging.
  • C. Manually insert the missing data into the managed table in each consumer's account, contacting affected users to coordinate the data entry.
  • D. Create a new version 2.1. Within version 2.1's setup script, dynamically detect if the application is an upgrade from 1.0 and, if so, execute the data migration script to transfer data from the old schema to the new schema.
  • E. Rollback all users to version 1.0 and then perform the schema migration directly on the consumer's account using custom SQL scripts.

Antwort: D

Begründung:
Option D is the correct approach. By dynamically detecting the upgrade and running a data migration script, the application ensures data integrity during the upgrade process. The data migration script will convert data from old format to new format. Option A is almost correct, however we don't assume the user is at 1.0. The application may be updated from earlier versions as well. Option B is not feasible due to operational overhead of doing it for each consumers and requires high privilege on consumer side which is not allowed for native apps. Option C is not practical or scalable. Managed tables are managed by your application code within the package, so Snowflake support won't perform data manipulation (Option E).


117. Frage
......

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