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Snowflake COF-C02 Exam Syllabus Topics:

Section	Weight	Objectives
Performance Concepts & Optimization	15%	- Warehouse sizing & tuning 1. Scaling, clustering, and concurrency management 2. Query profiling and optimization techniques - Data optimization features 1. Clustering keys, search optimization, materialized views 2. Caching and result reuse
Snowflake Architecture & Cloud Concepts	25%	- Cloud data platform fundamentals 1. Virtual warehouses and resource management 2. Service layers and separation of storage/compute 3. Data storage structure and formats - Account structure and hierarchy 1. Organization, account, database, schema levels 2. Object ownership and naming conventions
Account Access & Security	20%	- Authentication & authorization 1. Network policies and security settings 2. Users, roles, privileges and access control - Data protection & governance 1. Data masking and row-level security 2. Encryption at rest and in transit
Data Protection & Data Sharing	10%	- Secure data sharing 1. Sharing security and access control 2. Direct sharing, data exchanges, reader accounts - Data recovery & retention 1. Data retention policies and backup 2. Time Travel, Fail-safe, cloning capabilities
Data Pipelines & Automation	10%	- Workflow & automation 1. Change data capture and processing 2. Streams, tasks, and pipes - Integration & connectivity 1. External functions and API integration 2. Connectors and ETL/ELT patterns
Data Loading & Transformation	20%	- Data ingestion methods 1. Bulk loading, continuous loading, external stages 2. File formats and data type handling - Data transformation & querying 1. Working with structured, semi-structured, unstructured data 2. DDL/DML operations and SQL functions

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Snowflake SnowPro Core Certification Exam Sample Questions (Q142-Q147):

NEW QUESTION # 142
What happens when an external or an internal stage is dropped? (Select TWO).

A. When dropping an external stage, the files are not removed and only the stage is dropped
B. When dropping an internal stage, the files are deleted with the stage and the files are not recoverable
C. When dropping an external stage, both the stage and the files within the stage are removed
D. When dropping an internal stage, the files are deleted with the stage and the files are recoverable
E. When dropping an internal stage, only selected files are deleted with the stage and are not recoverable

Answer: A,B

Explanation:
When an external stage is dropped in Snowflake, the reference to the external storage location is removed, but the actual files within the external storage (like Amazon S3, Google Cloud Storage, or Microsoft Azure) are not deleted. This means that the data remains intact in the external storage location, and only the stage object in Snowflake is removed.
On the other hand, when an internal stage is dropped, any files that were uploaded to the stage are deleted along with the stage itself. These files are not recoverable once the internal stage is dropped, as they are permanently removed from Snowflake's storage.
References:
* [COF-C02] SnowPro Core Certification Exam Study Guide
* Snowflake Documentation on Stages

NEW QUESTION # 143
What would cause different results to be returned when running the same query twice?

A. sample is used and the seed is not set.
B. Fixed-size sampling Is used.
C. SAMPLE is used and the seed is set
D. Fraction-based sampling is used.

Answer: A

Explanation:
When using the SAMPLE clause in a query, if the seed is not set, Snowflake will use a different random seed for each execution of the query. This results in different rows being sampled each time, leading to different results. Setting a seed ensures that the same rows are sampled each time the query is run.
:
Snowflake Documentation: Sampling

NEW QUESTION # 144
What is the first step when creating a Data Exchange in Snowflake?

A. Run the CREATE LISTING command.
B. Contact Snowflake Support.
C. Run the CREATE SHARE command.
D. Create an organization ID.

Answer: B

Explanation:
The correct answer is D. Contact Snowflake Support .
Important correction:
The provided answer A. Create an organization ID is not the best answer. A Snowflake organization is required for certain marketplace and sharing features, but users do not typically "create an organization ID" as the first procedural step for setting up a Data Exchange.
Why D is correct:
A Data Exchange is a private data hub that allows providers and consumers to securely share data. Creating or enabling a Data Exchange typically requires Snowflake involvement. The first step is to contact Snowflake Support or a Snowflake representative to enable or configure the Data Exchange.
Why the other options are incorrect:
A). An organization identifier may be involved in account and organization-level administration, but creating an organization ID is not the first step to create a Data Exchange.
B). CREATE LISTING is used for creating listings after the provider/share setup exists.
C). CREATE SHARE creates a share object, but it is not the first step for creating the Data Exchange itself.
Official Snowflake documentation reference:
Snowflake documentation describes Data Exchange as a controlled data sharing hub and indicates that setting up a Data Exchange requires working with Snowflake.
Reference: Snowflake Documentation - Data Exchange; Snowflake Documentation - Secure Data Sharing; SnowPro Core Study Guide - Data Protection and Governance.

NEW QUESTION # 145
In which use cases does Snowflake apply egress charges?

A. Query result retrieval
B. Loading data into Snowflake
C. Data sharing within a specific region
D. Database replication

Answer: C

NEW QUESTION # 146
When cloning a schema, which Snowflake object will not be included in the clone?

A. A User-Defined Function (UDF)
B. An external stage
C. A named internal stage
D. A task

Answer: B

NEW QUESTION # 147
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