Production Support Software Engineer Interview Questions and Answers

Program to reverse a string using array of characters

• Create an array of characters to store the input string

• Iterate through the input string and store each character in the array

• Iterate through the array in reverse order to construct the reversed string

Mkdir command is used to create a new directory in a file system.

• Used to create a new directory in a specified location

• Syntax: mkdir [directory_name]

• Can create multiple directories at once using mkdir -p

• Example: mkdir new_directory

SQL is a programming language used for managing and querying relational databases.

• SQL stands for Structured Query Language

• It is used to retrieve, insert, update, and delete data in databases

• Common SQL commands include SELECT, INSERT, UPDATE, DELETE

• SQL is used in various database management systems like MySQL, Oracle, SQL Server

• Example: SELECT * FROM customers WHERE city = 'New York';

Multi threading concept involves running multiple threads simultaneously to improve performance and responsiveness.

• Allows multiple tasks to be executed concurrently

• Improves performance by utilizing multiple CPU cores

• Requires synchronization to prevent data corruption

• Examples: Java threads, Python threading module