ARMSOFTECH.AIR Senior Airman Interview Questions and Answers

Count occurrences of a letter in a string.

• Iterate through each character in the string and count occurrences of the specified letter.

• Use a hashmap to store the count of each letter.

• Handle both uppercase and lowercase letters to ensure accurate counting.

Use SQL JOIN to combine data from 3 tables based on a common key.

• Use INNER JOIN, LEFT JOIN, or RIGHT JOIN depending on the desired result

• Specify the columns to select from each table

• Use ON clause to specify the join condition

Green-field projects are great opportunities to start fresh and implement new technologies.

• Green-field projects allow for creative freedom and innovation

• They provide the opportunity to work with the latest technologies and tools

• Starting from scratch can lead to cleaner code and better architecture

• Examples: Developing a new mobile app, creating a new website from scratch

SAP OS/DB migration involves moving SAP systems from one operating system and database to another.

• It is a complex process that requires careful planning and execution.

• It involves analyzing the current system landscape and identifying the target system.

• The migration process includes data backup, system shutdown, system copy, and system startup.

• Testing and validation are critical to ensure the new system is functioning p...read more