MoEngage NOC Engineer Interview Questions and Answers

The Linux start process involves booting the operating system, initializing hardware, loading the kernel, and starting system services.

• BIOS/UEFI performs Power-On Self Test (POST)

• Bootloader (GRUB) loads the Linux kernel

• Kernel initializes hardware and mounts the root filesystem

• Systemd or SysVinit starts system services

A simple shell script to display current date and time

• Use the 'date' command to get the current date and time

• Create a new shell script file with a .sh extension

• Add the 'date' command to the script file

• Make the script file executable using 'chmod +x script.sh'

• Run the script using './script.sh'

A Python program to calculate the factorial of a number

• Use a loop to multiply numbers from 1 to the given number

• Handle edge cases like 0 and negative numbers

• Use recursion for a more concise solution