Production Support Associate Interview Questions and Answers

Linux commands are used to interact with the operating system and perform various tasks.

• ls - list directory contents

• cd - change directory

• pwd - print working directory

• mkdir - make a new directory

• rm - remove files or directories

• cp - copy files or directories

• mv - move files or directories

• grep - search for patterns in files

• chmod - change file permissions

• sudo - execute a command as the superuser

SQL joins are used to combine rows from two or more tables based on a related column between them.

• Joins are used to retrieve data from multiple tables in a single query

• Types of joins include INNER JOIN, LEFT JOIN, RIGHT JOIN, and FULL JOIN

• Example: SELECT * FROM table1 INNER JOIN table2 ON table1.column = table2.column