National Payments Corporation of India Data Center Operations Engineer Interview Questions and Answers

The boot process is the sequence of steps that a computer system goes through to start up and load the operating system.

• Power-on self-test (POST) is performed to check hardware components

• The BIOS or UEFI firmware is loaded and initializes hardware

• The bootloader is executed to locate and load the operating system

• The operating system kernel is loaded into memory

• Device drivers are loaded and initialized

• System services and

The patching process involves applying updates to software or systems to fix vulnerabilities or improve functionality. Rollback process is used to revert changes if issues occur.

• Patching process involves identifying vulnerabilities or bugs, testing patches, and applying them to the affected systems.

• Rollback process is a contingency plan to revert changes if issues arise after patching.

• Patching can be done manually or t...read more