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Snowflake Online Assessment Test

The Snowflake Online Assessment Test evaluates a candidate's proficiency with the Snowflake data platform. Using scenario-based MCQ questions and hands-on SQL queries, it assesses topics such as Snowflake architecture, data warehousing concepts, performance tuning, security features, data sharing, and more. This test helps in identifying professionals adept at leveraging Snowflake for data management and analytics.

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Screen candidates with a 25 mins test

Test duration:  25 mins
Difficulty level:  Moderate
Availability:  Ready to use
Questions:
  • 12 Snowflake MCQs
Covered skills:
Snowflake Architecture
Data Warehousing Concepts
SQL Queries in Snowflake
Snowflake Security Features
Data Loading and Unloading
Snowflake Performance Tuning
Time Travel and Data Recovery
Snowflake Cloning and Zero-Copy Cloning
Snowflake Data Sharing
Stored Procedures and User-Defined Functions in Snowflake
Snowflake Integration with Other Tools
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Adaface is used by 1500+ businesses in 80 countries.

Adaface skill assessments measure on-the-job skills of candidates, providing employers with an accurate tool for screening potential hires.

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Use the to shortlist qualified candidates

The Snowflake Online Assessment Test helps recruiters and hiring managers identify qualified candidates from a pool of resumes, and helps in taking objective hiring decisions. It reduces the administrative overhead of interviewing too many candidates and saves time by filtering out unqualified candidates at the first step of the hiring process.

The test screens for the following skills that hiring managers look for in candidates:

  • Understanding the core concepts of Snowflake architecture
  • Creating and managing Snowflake accounts and users
  • Designing and implementing data warehouses in Snowflake
  • Loading and extracting data from Snowflake tables
  • Working with Snowflake Virtual Warehouses
  • Understanding data sharing and data replication in Snowflake
  • Performing advanced analytics and querying in Snowflake
  • Implementing security and access controls in Snowflake
  • Monitoring and optimizing Snowflake performance
  • Managing and automating Snowflake tasks and jobs
  • Working with Snowflake connectors and integrations
  • Troubleshooting and resolving issues in Snowflake
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Screen candidates with the highest quality questions

We have a very high focus on the quality of questions that test for on-the-job skills. Every question is non-googleable and we have a very high bar for the level of subject matter experts we onboard to create these questions. We have crawlers to check if any of the questions are leaked online. If/ when a question gets leaked, we get an alert. We change the question for you & let you know.

How we design questions

These are just a small sample from our library of 15,000+ questions. The actual questions on this Snowflake Online Assessment Test will be non-googleable.

🧐 Question

Hard

Data Parsing
Data Types
Query Optimization
Aggregate Functions
Solve
Consider a database in Snowflake containing a table transactions with the following schema: trans_id (VARCHAR), trans_date (DATE), customer_id (INT), amount (DECIMAL(10,2)), category (VARCHAR). The table has millions of records distributed across various categories and dates. You need to write a SQL query that finds the average transaction amount per category for transactions that occurred in the last 30 days from today but excludes any categories where the total number of transactions in this time period is less than 10.

Assuming today's date in Snowflake is accessed using CURRENT_DATE(), how would you write this query?
 image

Hard

Data Transformation and Efficiency
SQL execution
Performance optimization
Solve
In a Snowflake environment, a data engineer is tasked with optimizing a large query that aggregates transaction data across multiple years for trend analysis. The original query is experiencing timeouts and excessive computational load. The table transactions has the following schema: id (INT), user_id (INT), amount (FLOAT), transaction_date (DATE). The engineer decides to utilize Snowflake's clustering feature on transaction_date to improve query performance. Consider the following pseudo code for the optimized query:
 image
Which modification will most effectively optimize the query performance in Snowflake considering its architecture?
A: Replace CLUSTER BY with PARTITION BY in the SELECT statement.
B: Utilize CLUSTER BY in the CREATE TABLE statement instead of in the SELECT statement.
C: Increase the WAREHOUSE_SIZE to a larger instance before running the query.
D: Use ORDER BY at the end of the query to organize the results by transaction_date.
E: Change SUM(amount) to COUNT(amount) to reduce computational overhead.
F: Add an index on transaction_date to speed up query execution.

Medium

Schema Integration
Data Warehousing
Schema Design
Query Performance
Solve
A data engineering team is tasked with integrating multiple data sources into a Snowflake data warehouse. The primary sources include transactional data from an e-commerce platform, customer data from a CRM system, and product information from an inventory management system. The goal is to optimize query performance for reports that aggregate transactional sales by product category, customer demographics, and sales region. Considering the need for efficient joins and aggregated queries, the team proposes a design using a combination of normalized and denormalized schemas.

The transactional data includes fields such as Transaction_ID, Customer_ID, Product_ID, Quantity, and Sale_Amount. The customer data holds Customer_ID, Name, Age, Gender, and Region. The product information contains Product_ID, Product_Name, Category, and Price.

You are to evaluate the proposed schema:

1. Transactions table (normalized)
2. Customers table (normalized)
3. Products table (normalized)
4. Sales summary table (denormalized, aggregating key metrics by Product Category and Region)

Which schema modification would best optimize the Snowflake query performance for the intended reports?
A: Add a Region column to the Products table.
B: Create an additional denormalized table aggregating customer demographic data by Region.
C: Index Customer_ID in the Transactions table.
D: Implement clustering on the Category column in the Products table.
E: Implement clustering on Customer_ID in the Transactions table.
🧐 Question🔧 Skill

Hard

Data Parsing
Data Types
Query Optimization
Aggregate Functions

3 mins

Snowflake
Solve

Hard

Data Transformation and Efficiency
SQL execution
Performance optimization

3 mins

Snowflake
Solve

Medium

Schema Integration
Data Warehousing
Schema Design
Query Performance

3 mins

Snowflake
Solve
🧐 Question🔧 Skill💪 Difficulty⌛ Time
Data Parsing
Data Types
Query Optimization
Aggregate Functions
Snowflake
Hard3 mins
Solve
Data Transformation and Efficiency
SQL execution
Performance optimization
Snowflake
Hard3 mins
Solve
Schema Integration
Data Warehousing
Schema Design
Query Performance
Snowflake
Medium3 mins
Solve

Test candidates on core topics

Snowflake: Snowflake is a cloud data platform that provides a fully managed and scalable solution for data warehousing and analytics. It allows users to store and analyze large volumes of data from various sources, enabling real-time decision making and advanced analytics. This skill is measured in the test to assess a candidate's ability to work with Snowflake, perform data modeling, write SQL queries, and optimize database performance.

Data Warehousing: Data warehousing is the process of collecting, organizing, and storing data from various sources in a centralized repository for analysis and reporting. This skill is measured in the test as it is essential for working with Snowflake and understanding data modeling concepts for effective data management and analysis.

SQL Queries: SQL queries are used to retrieve, manipulate, and manage data stored in a relational database. This skill is measured in the test to evaluate a candidate's proficiency in writing SQL queries, which is necessary for data extraction, transformation, and loading (ETL) processes in Snowflake.

Database Performance Optimization: Database performance optimization involves analyzing and fine-tuning the structure, configuration, and queries of a database to improve its efficiency and responsiveness. This skill is measured in the test to assess a candidate's ability to identify and resolve performance bottlenecks in Snowflake databases, ensuring optimal query execution and resource utilization.

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Have questions about the Snowflake Online Assessment Test?

What roles can I use the for?

Here are few roles for which we recommend this test:

  • Data Engineer
  • Data Architect
  • Database Administrator
  • Business Intelligence Developer
  • Data Analyst
  • ETL Developer
  • Cloud Engineer
  • Solutions Architect
  • Big Data Engineer
  • Data Warehousing Specialist
Can I combine the Snowflake Online Assessment Test with questions from the SQL Online Test?

Yes, recruiters can request a custom test combining skills. Refer to the SQL Online Test for details on assessing SQL skills.

How to use the Snowflake Online Assessment Test in my hiring process?

Use this test as a pre-screening tool. Add a link to the assessment in your job post or invite candidates by email. This helps identify skilled candidates earlier.

What are the main Data Warehousing tests?

Explore more data warehousing-related assessments:

Do you have any anti-cheating or proctoring features in place?

We have the following anti-cheating features in place:

  • Non-googleable questions
  • IP proctoring
  • Screen proctoring
  • Web proctoring
  • Webcam proctoring
  • Plagiarism detection
  • Secure browser
  • Copy paste protection

Read more about the proctoring features.

What experience level can I use this test for?

Each Adaface assessment is customized to your job description/ ideal candidate persona (our subject matter experts will pick the right questions for your assessment from our library of 10000+ questions). This assessment can be customized for any experience level.

I'm a candidate. Can I try a practice test?

No. Unfortunately, we do not support practice tests at the moment. However, you can use our sample questions for practice.

Can I get a free trial?

Yes, you can sign up for free and preview this test.

What is the Snowflake Online Assessment Test?

The Snowflake Online Assessment Test is designed to evaluate a candidate's skills in Snowflake. It is used by recruiters to assess proficiency in various Snowflake-related tasks and concepts.

What topics are covered in the Snowflake Online Assessment Test?
  • Snowflake Architecture
  • Data Warehousing Concepts
  • SQL Queries in Snowflake
  • Snowflake Security Features
  • Data Loading and Unloading
  • Snowflake Performance Tuning
  • Time Travel and Data Recovery
  • Snowflake Cloning and Zero-Copy Cloning
  • Snowflake Data Sharing
  • Stored Procedures and User-Defined Functions in Snowflake
  • Snowflake Integration with Other Tools
Can I test Snowflake and Data Analytics skills together in a test?

Yes, you can combine Snowflake and Data Analytics skills in one test. Check the Data Analytics in AWS Test for more details.

Can I combine multiple skills into one custom assessment?

Yes, absolutely. Custom assessments are set up based on your job description, and will include questions on all must-have skills you specify. Here's a quick guide on how you can request a custom test.

How do I interpret test scores?

The primary thing to keep in mind is that an assessment is an elimination tool, not a selection tool. A skills assessment is optimized to help you eliminate candidates who are not technically qualified for the role, it is not optimized to help you find the best candidate for the role. So the ideal way to use an assessment is to decide a threshold score (typically 55%, we help you benchmark) and invite all candidates who score above the threshold for the next rounds of interview.

Does every candidate get the same questions?

Yes, it makes it much easier for you to compare candidates. Options for MCQ questions and the order of questions are randomized. We have anti-cheating/ proctoring features in place. In our enterprise plan, we also have the option to create multiple versions of the same assessment with questions of similar difficulty levels.

What is the cost of using this test?

You can check out our pricing plans.

I just moved to a paid plan. How can I request a custom assessment?

Here is a quick guide on how to request a custom assessment on Adaface.

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