hard Python: Find the Bug in Everyday Code
Answer 15 questions randomly selected from a bank of 40. Choose one best answer per question. Pass with 12 correct answers. Original professional practice, not an official certification exam.
Программирование
hard SQL Transactions and Concurrency: PostgreSQL Scenarios
Answer 15 questions randomly selected from a bank of 40. Choose one best answer per question. Pass with 12 correct answers. Original professional practice, not an official certification exam.
Authentication and Session Security: Practical Scenarios
Answer 15 questions randomly selected from a bank of 40. Choose one best answer per question. Pass with 12 correct answers. Original professional practice, not an official certification exam.
API Testing: Find the Missing Test Case
Answer 15 questions randomly selected from a bank of 40. Choose one best answer per question. Pass with 12 correct answers. Original professional practice, not an official certification exam.
Webhooks and Retries: Idempotency Scenarios
Answer 15 questions randomly selected from a bank of 30. Choose one best answer per question. Pass with 12 correct answers. Original practice material, not an official certification exam.
SQL Window Functions: Ranking and Running Totals
Answer 15 questions randomly selected from a bank of 30. Choose one best answer per question. Pass with 12 correct answers. Original practice material, not an official certification exam.
SQL JOIN Debugging: Duplicates and Missing Rows
Answer 15 questions randomly selected from a bank of 30. Choose one best answer per question. Pass with 12 correct answers. Original practice material, not an official certification exam.
PostgreSQL NULL Traps: COUNT, Filters and NOT IN
Answer 15 questions randomly selected from a bank of 30. Choose one best answer per question. Pass with 12 correct answers. Original practice material, not an official certification exam.
Git Recovery: Revert, Restore and Shared History
Answer 15 questions randomly selected from a bank of 30. Choose one best answer per question. Pass with 12 correct answers. Original practice material, not an official certification exam.
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