To put the kernel in context, you can think of a Linux machine as having 3 layers: The hardware: The physical machine—the bottom or base of the system, made up of memory (RAM) and the processor or central processing unit (CPU), as well as input/output (I/O) devices such as storage, networking, and graphics.

How many layers are there in Linux?

The Linux system basically works on 4 layers. See the below diagram, shows the layers of of the Linux system architecture. Hardware − Hardware consists of all physical devices attached to the System.

What are the components of a Linux system?

Every OS has component parts, and the Linux OS also has the following components parts:

• Bootloader. Your computer needs to go through a startup sequence called booting. …
• OS Kernel. …
• Background services. …
• OS Shell. …
• Graphics server. …
• Desktop environment. …
• Applications.