Senior Engineer 3 Interview Questions and Answers

ITIL (Information Technology Infrastructure Library) is a set of best practices for IT service management.

• ITIL is a framework that outlines best practices for IT service management.

• It focuses on aligning IT services with the needs of the business.

• ITIL defines processes for service design, transition, operation, and continual improvement.

• A service in ITIL is a means of delivering value to customers by facilitating outcomes customers want to achieve without the ownership of spe...read more

SQL joins are used to combine rows from two or more tables based on a related column between them. Shell scripting is a way to automate tasks using command line scripts.

• SQL joins are used to retrieve data from multiple tables based on a related column

• Common types of SQL joins include INNER JOIN, LEFT JOIN, RIGHT JOIN, and FULL JOIN

• Shell scripting involves writing scripts to automate tasks using command line commands

• Shell scripts can be used to perform repetitive tasks, automa...read more

Handled critical issues related to system downtime and data loss

• Resolved a server crash that caused a 4-hour downtime

• Recovered lost data due to a database corruption issue

• Fixed a network outage that affected multiple departments

• Identified and fixed a security vulnerability that could have led to a data breach

SQL keys are used to uniquely identify records in a table. They include primary, foreign, and unique keys.

• Primary key: uniquely identifies each record in a table, must be unique and not null

• Foreign key: links two tables together, ensures referential integrity

• Unique key: ensures that all values in a column are unique