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[General] Valid PCAD-31-02 Exam Voucher | PCAD-31-02 Questions Answers

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【General】 Valid PCAD-31-02 Exam Voucher | PCAD-31-02 Questions Answers

Posted at 3 day before      View：31 | Replies：1        Print      Only Author   [Copy Link] 1#
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Python Institute Certified Associate Data Analyst with Python (PCAD-31-02) Sample Questions (Q124-Q129):NEW QUESTION # 124
Which of the following correctly demonstrates the use of parameterized queries using Python's sqlite3 module?
  • A. cursor.execute("SELECT * FROM users WHERE id = ':id'", {'id': user_id})
  • B. cursor.execute("SELECT * FROM users WHERE id = ?", (user_id,))
  • C. cursor.execute("SELECT * FROM users WHERE id = ?", user_id)
  • D. cursor.execute("SELECT * FROM users WHERE id = " + user_id)
Answer: B

NEW QUESTION # 125
How would you extract the last three rows of a DataFrame df using position-based indexing?
  • A. df.iloc[-3:]
  • B. df[-3]
  • C. df.loc[-3:]
  • D. df.tail(3)
Answer: A

NEW QUESTION # 126
Which best practices help enhance database security when building Python data analysis pipelines?
(Choose two)
  • A. Limit database user permissions to only necessary operations
  • B. Sanitize input by replacing dangerous characters with asterisks
  • C. Store credentials securely using environment variables
  • D. Construct queries using f-strings for readability
Answer: A,C

NEW QUESTION # 127
Which techniques are commonly used to manage type conversion between SQL and Python when importing database values?
(Choose two)
  • A. Automatically casting Python variables to SQL column types without validation
  • B. Defining column types in Python using sqlite3.register_converter()
  • C. Using a mapping function to convert SQL types into Python objects
  • D. Ignoring data types and treating everything as strings
Answer: B,C

NEW QUESTION # 128
Which SQL commands can be used to modify the contents of a table's data directly?
(Choose all that apply)
  • A. UPDATE
  • B. DELETE
  • C. INSERT
  • D. SELECT
Answer: A,C

NEW QUESTION # 129
......
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Posted at yesterday 21:14        Only Author  2#
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