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| Section | Objectives |
|---|---|
| Data Transformations and Querying | - Semi-structured data handling (VARIANT, JSON, Parquet) - SQL querying in Snowflake |
| Snowflake Architecture and Overview | - Virtual warehouses and resource scaling concepts - Snowflake architecture concepts (cloud data platform, separation of storage and compute) |
| Data Loading and Unloading | - Bulk loading using stages and COPY INTO - Data unloading and external stages |
| Data Protection, Security, and Performance | - Query performance optimization basics - Role-based access control (RBAC) - Time Travel and Fail-safe concepts |
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NEW QUESTION # 26
When a multi-cluster virtual warehouse is using an Economy scaling policy, when will an additional cluster be automatically started to handle queued queries?
Answer: A
Explanation:
The correct answer is D. When the system estimates that there is enough query load to keep the new cluster busy for at least 6 minutes .
In Snowflake, a multi-cluster warehouse can use either a Standard or Economy scaling policy. The Economy scaling policy is more conservative. It starts additional clusters only when Snowflake estimates that the extra cluster will have enough work to justify the additional compute cost.
Why D is correct:
With the Economy scaling policy, Snowflake starts another cluster only if the system estimates there is enough query load to keep the new cluster busy for approximately 6 minutes. This helps reduce credit consumption by avoiding unnecessary short-lived cluster starts.
Why the other options are incorrect:
A). The condition is not based on all active clusters running queries for more than 6 minutes.
B). A single queued query for more than 6 minutes is not the exact Economy scaling rule.
C). The rule is not specifically based on 3 or more queued queries.
D). This matches Snowflake's documented behavior for the Economy scaling policy.
Official Snowflake documentation reference:
Snowflake documentation explains that the Economy scaling policy conserves credits by starting additional clusters only when Snowflake estimates enough query load exists to keep the cluster busy for at least 6 minutes.
Reference: Snowflake Documentation - Multi-cluster warehouses; Snowflake Documentation - Scaling policy; SnowPro Core Study Guide - Virtual Warehouses and Resource Management.
NEW QUESTION # 27
How long is the Fail-safe period for temporary and transient tables?
Answer: D
Explanation:
Reference: https://docs.snowflake.com/en/user-guide/tables-temp-transient.html
NEW QUESTION # 28
Which of the following describes external functions in Snowflake?
Answer: A
Explanation:
External functions in Snowflake are a special type of User-Defined Function (UDF) that call code executed outside of Snowflake, typically through a remote service. Unlike traditional UDFs, external functions do not contain SQL code within Snowflake; instead, they interact with external services to process data2.
https://docs.snowflake.com/en/sql-reference/external-functions.html#:~:text=External%20functions%20are%20u
NEW QUESTION # 29
What operations can be performed while loading a simple CSV file into a Snowflake table using the COPY INTO command? (Select TWO).
Answer: A,E
Explanation:
When loading a simple CSV file into a Snowflake table using the COPY INTO command, you can perform various transformations and adjustments on the data as part of the loading process. Specifically, you can:
* B. Reorder the columns: Specify the order of columns in the COPY INTO command to match the structure of the target table if it differs from the order of columns in the source CSV file.
* D. Convert the datatypes: Explicitly convert the datatypes of the data being loaded to match the datatypes of the columns in the target table. This can be necessary when the source data's format does not match the target table's expected datatype.
References:
* Snowflake Documentation: Using the COPY INTO Command for Data Loading
NEW QUESTION # 30
Using which object-level parameters will help limit query processing and concurrency slowdowns? (Select TWO).
Answer: B,E
NEW QUESTION # 31
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