1.   What is kernel? 

Answer:  Kernel is central component of a operating system that make communication between user’s level application and hardware, it also control the task management, disk management and memory management.

2.   Is Linux an operating system or a kernel?

Answer: Linux is a kernel not a operating system. And kernel is a part of operating system.

3.   Is Linux Operating System Immune to Malware?

Answer: Linux offer higher level of protection against virus than other operating systems. It’s a common myth that Linux systems are immune to viruses.