Draeger India Interview Questions and Answers

A C program to print even numbers from the Fibonacci series using dynamic programming.

• Use dynamic programming to store previously calculated Fibonacci numbers.

• Iterate through the Fibonacci series and check if each number is even.

• Print the even numbers found.

The boot up process of a typical machine involves several stages, including power-on, BIOS initialization, bootloader loading, kernel loading, and initialization of the operating system.

• The boot up process starts with the power-on of the machine.

• The BIOS (Basic Input/Output System) is initialized, which performs a series of hardware checks and initializes the system components.

• The bootloader is loaded, which is responsible for loading the operating system.

• The kernel of the op...read more

Optimized code to find prime numbers

• Start checking from 2 up to the square root of the number

• Use the modulo operator to check if the number is divisible by any smaller number

• If the number is divisible by any smaller number, it is not prime

• If the number is not divisible by any smaller number, it is prime

WhatsApp is a messaging app that allows users to send text messages, voice messages, images, and videos.

• WhatsApp uses a centralized database to store user information, messages, and media files.

• The database schema includes tables for users, groups, messages, media files, and settings.

• Each user has a unique ID, phone number, and profile information stored in the database.

• Messages are linked to users and groups through foreign keys in the database.

• Media files are stored in a se...read more

Automation script to open Google Chrome and verify login functionality

• Use Selenium WebDriver to automate browser actions

• Locate the login elements using appropriate locators

• Enter login credentials and submit the form

• Verify successful login by checking for expected elements on the next page