Keyloop Infrastructure Engineer Interview Questions and Answers

Thread concepts involve concurrent execution of multiple parts of a program.

• Threads allow for parallelism and can improve performance.

• Threads can communicate with each other through shared memory or message passing.

• Thread synchronization is important to prevent race conditions and deadlocks.

• Examples of thread concepts include multithreading, thread pools, and futures.

• Thread safety is important to ensure correct behavio

I would immediately inform the project manager and the testing team about the error and work collaboratively to find a solution.

• Notify the project manager and testing team about the error

• Collaborate with the testing team to understand the issue

• Analyze the code to identify the root cause of the error

• Work with the development team to fix the error as quickly as possible

• Perform thorough testing to ensure the issue is reso...read more

Unique key allows null values, primary key does not.

• Primary key is a unique identifier for a record in a table

• Unique key allows null values, primary key does not

• A table can have only one primary key, but multiple unique keys

• Primary key is automatically indexed, unique key is not necessarily indexed

HAVING clause is used in SQL to filter data based on aggregate functions.

• It is used with GROUP BY clause to filter data based on aggregate functions

• It is used to filter data after grouping has been done

• It is similar to WHERE clause but operates on grouped data

• Example: SELECT department, AVG(salary) FROM employees GROUP BY department HAVING AVG(salary) > 50000;