The Snowflake architectural layer responsible for a query execution plan is:
C. Cloud services
The Cloud Services layer in Snowflake handles activities such as query optimization, compilation, and execution planning.
Query execution is performed in the processing layer. Snowflake processes queries using “virtual warehouses”. Each virtual warehouse is an MPP compute cluster composed of multiple compute nodes allocated by Snowflake from a cloud provider.
C
https://docs.snowflake.com/en/user-guide/cost-understanding-compute#label-cloud-services-credit-usage
https://docs.snowflake.com/en/user-guide/intro-key-concepts
At least the discussion section under each question looks very valuable from learning perspective. You have a chance to see other opinions, sometimes different than yours which urges you to your own deeper research and better understanding.
why not a Cloud Provider as per the below-
Query execution is performed in the processing layer. Snowflake processes queries using “virtual warehouses”. Each virtual warehouse is an MPP compute cluster composed of multiple compute nodes allocated by Snowflake from a cloud provider.
cloud services, Query Processing and Data storage are the layers. Must be A compute as its not any of the other 3. It must imply query processing layer.
Query execution plan, does not need an active virtual warehouse to complete as it only compiles the SQL queries and consumes only Cloud service credits, since its a metadata operation. I would go with C.
Cloud Services
The cloud services layer is a collection of services that coordinate activities across Snowflake. These services tie together all of the different components of Snowflake in order to process user requests, from login to query dispatch. The cloud services layer also runs on compute instances provisioned by Snowflake from the cloud provider.
Services managed in this layer include:
Authentication
Infrastructure management
Metadata management
Query parsing and optimization
Access control
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