1.  What is kernel?

A kernel is the core component of an operating system that manages resources and enables communication between software and hardware. Karnel is a central component of an operating system that manages the operations of computers and hardware. It basically manages operations of memory and CPU time. It is a core component of an operating system. Kernel acts as a bridge between applications and data processing performed at the hardware level using inter-process communication and system calls.

2. Is Linux an operating system or a kernel?

Linux is both a kernel and the foundation of an operating system. While the term "Linux" is often used to refer to the entire operating system, strictly speaking, Linux is just the kernel component. Linux is often referred to a complete operating system that includes a shell and command line or GUI tools to control the system. Examples of popular Linux distributions include Ubuntu, Red Hat, and Debian.

3.   Is Linux Operating System Immune to Malware?

While Linux is widely thought to be safer than other operating systems such as Windows, no operating system is totally immune to malware. Because of its open-source nature and security procedures, Linux is less vulnerable to certain types of malware than other platforms, but it is not immune. However, Linux is not immune to malware, and there have been instances of Linux-specific malware and security breaches. It is crucial to keep the system up to date, use strong passwords, practice safe browsing habits, and apply security best practices to minimize the risk of malware infections on any operating system, including Linux. Additionally, installing security software, such as antivirus and intrusion detection tools, can further enhance protection.