A Data Engineer is writing a Python script using the Snowflake Connector for Python. The Engineer will use the snowflake.connector.connect function to connect to Snowflake. The requirements are…

Question

Options

• Aauthenticator
• Barrow_number_to_decimal
• Cclient_prefetch_threads
• Dclient_session_keep_alive
• Evalidate_default_parameters

• A
  6% (3)
• B
  2% (1)
• C
  81% (44)
• D
  11% (6)

Explanation

validate_default_parameters=True (E) tells the connector to verify that the database, schema, and warehouse specified in the connection string actually exist before completing the connection - if any are missing, it raises an exception immediately rather than silently connecting and failing later. client_prefetch_threads (C) controls how many threads pre-fetch result chunks in parallel, directly improving download performance for large result sets.

The distractors are wrong for these reasons: A (authenticator) configures the auth method (e.g., SSO, OAuth) and has no effect on parameter validation or download speed; B (arrow_number_to_decimal) only affects how numeric types are represented when using Arrow format, unrelated to either requirement; D (client_session_keep_alive) prevents idle session timeouts but does nothing for validation or download throughput.

Memory tip: Map each requirement to a keyword - "Validate" existence → validate_default_parameters; "Prefetch threads" → faster downloads. Both answers have the requirement baked into the parameter name itself.

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