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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Performance and Best Practices | 10% | - Security and governance
|
| Topic 2: Snowpark Concepts and Architecture | 25% | - Snowpark architecture and execution model
|
| Topic 3: Snowpark API and Development | 30% | - Multi-language support
|
| Topic 4: Data Transformations and Operations | 35% | - DataFrame manipulation
|
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NEW QUESTION # 306
You have a SQL query stored in a file named 'query.sqr which contains several complex analytical calculations. The query depends on a Snowpark 'session' object already established. You want to create a Snowpark DataFrame from the result of this query. Which of the following code snippets achieves this with optimal performance and readability, assuming correct file access permissions?
Answer: A
Explanation:
Option A provides the most straightfomard and efficient approach. It reads the SQL query from the file and directly creates a Snowpark DataFrame using 'session.sql(sql_query)'. Option B introduces Pandas, which is unnecessary and less efficient. Option C uses the Snowflake Connector outside of Snowpark's API, which is generally not the preferred approach. Option D has a non-existent function create_dataframe' , and Option E reads lines separately requiring a join which might be erroneous.
NEW QUESTION # 307
You have a Snowpark Python application that performs complex data transformations and machine learning model training. The data is stored in Snowflake tables. You notice that model training jobs, specifically those involving large feature sets and iterative algorithms, are consistently slow. The warehouse is already scaled to a LARGE size. Which of the following techniques, when applied individually or in combination, would MOST likely improve the performance of model training in Snowpark?
Answer: B,D
Explanation:
Caching intermediate DataFrames (Option B) avoids redundant computations, significantly speeding up iterative algorithms. Filtering and data skipping (Option E) reduce the amount of data processed, which is especially beneficial with large feature sets. While sprocs (Option A) offer performance benefits for certain IJDFs, the impact on overall model training performance might be less significant compared to caching and data reduction. External functions (Option C) may introduce network latency, outweighing the potential benefits, unless carefully optimized for data transfer. Scaling up (Option D) might help, but is not the most likely to improve performance, given that the warehouse is already at a LARGE size. Focusing on more efficient data handling is better in most cases.
NEW QUESTION # 308
A data engineer is tasked with creating a Snowpark session using JWT authentication. They have a private key 'rsa_key.pff, a user name 'snowpark_user' , and an account identifier 'my_account'. The goal is to create a session object suitable for submitting Snowpark jobs. Which code snippet correctly demonstrates the instantiation of a session object using JWT?
Answer: E
Explanation:
Option B correctly reads the private key file, converts it to the required PEM format, and then uses it within the connection parameters to establish a Snowpark session. It handles the private key securely by loading and formatting it properly before passing it to the connection parameters. Option A, C and D attempts to directly provide the path to the private key or read the content with incorrect formatting which is incorrect. Option E doesn't address reading the private key in correct form and only address warehouse selection after the session is create.
NEW QUESTION # 309
You are working with a Snowpark DataFrame 'sales_data' containing sales transactions. The DataFrame includes columns 'transaction_id' (STRING), 'product_id' (IN T), 'sale_date' (DATE), and 'sale_amount' (DOUBLE). You need to calculate the total sales amount for each product on a daily basis. Furthermore, you want to filter out any days where the total sales amount for a specific product is less than $50. Which of the following code snippets correctly achieves this using Snowpark Python?
Answer: A,E
Explanation:
Options A and B are correct. Both first group the data by 'product_id' and 'sale_date' and calculate the sum of 'sale_amount' for each group. They then filter the results to include only those rows where 'total_sales' is greater than 50. 'filter' and 'where' are interchangable. C would be invalid snowpark as you use 'having' after group_by. Option D and E would also be valid if the prompt asked for all days with a sale amount equal to greater than $50 not greater.
NEW QUESTION # 310
You are developing a Snowpark application that utilizes a UDF. You need to ensure that the UDF runs with the privileges of the caller (the user executing the query). Which of the following steps are necessary to accomplish this while creating the Snowpark session?
Answer: C
Explanation:
To ensure a UDF runs with the privileges of the caller, you need to explicitly specify the 'api_caller_identity=sf.Caller.CALLER when defining the UDF using Snowpark. This instructs Snowflake to execute the UDF with the caller's permissions. No special session configurations are needed. Option A is irrelevant for caller's identity. Option B is incorrect as it's not automatic. Option D does not exist. Option E is a valid SQL command but needs to be implemented in Python using 'session.sqr function
NEW QUESTION # 311
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