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Snowflake COF-C02 Exam Syllabus Topics:

SectionWeightObjectives
Topic 1: Performance Optimization20-25%- Query Performance
  • 1. Query History
  • 2. Result Set Caching
  • 3. Query Profiling
- Warehouse Optimization
  • 1. Warehouse Sizing
  • 2. Multi-cluster Configuration
  • 3. Auto-Suspend/Auto-Resume
- Data Optimization
  • 1. Search Optimization Service
  • 2. Materialized Views
  • 3. Clustering Keys
Topic 2: Account Access and Security20-25%- Network Security
  • 1. Private Connectivity
  • 2. Network Policies
- Authentication
  • 1. Multi-Factor Authentication
  • 2. SSO Integration
  • 3. User/Role Management
- Authorization
  • 1. Grant/Revoke Commands
  • 2. Role Hierarchy
  • 3. Object Privileges
Topic 3: Data Handling and Transformation15-20%- Semi-Structured Data
  • 1. Flattening Data
  • 2. VARIANT Data Type
  • 3. JSON/Avro/Parquet Handling
- Data Transformation
  • 1. Time Travel Features
  • 2. Snowflake SQL Functions
  • 3. Data Pipelines
Topic 4: Billing and Account Management10-15%- Account Operations
  • 1. Database/Schema Management
  • 2. Account Parameters
  • 3. Object Naming Conventions
- Credit Usage
  • 1. Credit Monitoring
  • 2. Resource Monitors
Topic 5: Cloud Architecture and Data Loading20-25%- Snowflake Architecture Overview
  • 1. Layers (Storage, Compute, Services)
  • 2. Virtual Warehouses
  • 3. Snowflake Editions
  • 4. Multi-cluster Warehouses
- Data Loading Techniques
  • 1. Bulk Loading (COPY INTO)
  • 2. Continuous Loading
  • 3. Data Loading Best Practices

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Snowflake SnowPro Core Certification Exam Sample Questions (Q201-Q206):

NEW QUESTION # 201
Which Snowflake feature enables loading data from cloud storage as soon as files are available in a stage?

Answer: D

Explanation:
* Snowpipe is Snowflake's continuous data ingestion service that loads data from cloud storage (e.g., S3, Azure Blob, Google Cloud Storage) into Snowflake as soon as the files become available in a stage.
* Snowpipe uses event-driven architecture to automatically detect new files and load them with low- latency.
Why Other Options Are Incorrect:
* A. COPY INTO <location> command: This command is for manual or scheduled bulk data loading, not continuous, automated loading.
* B. Data replication: Used for replicating databases across regions, not for data loading.
* D. Direct share: Used for sharing data between Snowflake accounts, not for loading files.
References:
* Snowpipe Documentation


NEW QUESTION # 202
The customer table in the Tl database is accidentally dropped.
Which privileges are required to restore this table? (Select TWO).

Answer: A,B

Explanation:
* To restore a dropped table in Snowflake, you need specific privileges:
* Ownership (B): The owner of the table can perform all operations, including restoring dropped tables.
* All privileges on the database (D): Having full database privileges includes access to restore dropped objects within that database.
Why Other Options Are Incorrect:
* A. Select privilege: Only allows querying data, not restoration.
* C. All privileges on the table: The table no longer exists, so this does not apply.
* E. Create table privilege: This allows creating new tables, not restoring dropped ones.
References:
* Undrop Table
* Snowflake Privileges Documentation


NEW QUESTION # 203
What are the correct parameters for time travel and fail-safe in the Snowflake Enterprise Edition?

Answer: B


NEW QUESTION # 204
If a JOIN operation is based on two columns which both contain NULL values, what SQL function will return results?

Answer: C

Explanation:
* In SQL, NULL values are not equal to other NULL values. To make comparisons work in join operations, the NVL function can replace NULL with a non-NULL value.
* Example:
SELECT *
FROM table1 t1
JOIN table2 t2
ON NVL(t1.col, 'default') = NVL(t2.col, 'default');
Why Other Options Are Incorrect:
* B. Equal_null function: No such function exists in Snowflake SQL.
* C. NULLIF function: Used to return NULL when two values are equal, not for handling NULL in joins.
* D. IFNULL function: Similar to NVL but less commonly used in this context.
References:
* NVL Function Documentation


NEW QUESTION # 205
A user is loading JSON documents composed of a huge array containing multiple records into Snowflake. The user enables the strip__outer_array file format option What does the STRIP_OUTER_ARRAY file format do?

Answer: B

Explanation:
Data Size Limitations
The VARIANT data type imposes a 16 MB size limit on individual rows.
For some semi-structured data formats (e.g. JSON), data sets are frequently a simple concatenation of multiple documents. The JSON output from some software is composed of a single huge array containing multiple records. There is no need to separate the documents with line breaks or commas, though both are supported.
If the data exceeds 16 MB, enable the STRIP_OUTER_ARRAY file format option for the COPY INTO <table> command to remove the outer array structure and load the records into separate table rows:
copy into <table>
from @~/<file>.json
file_format = (type = 'JSON' strip_outer_array = true);
https://docs.snowflake.com/en/user-guide/semistructured-considerations.html


NEW QUESTION # 206
......

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