In general, most kernels fall into one of three types: monolithic, microkernel, and hybrid. Linux is a monolithic kernel while OS X (XNU) and Windows 7 use hybrid kernels.

Which Linux kernel is best?

Currently (as of this new release 5.10), most Linux distributions like Ubuntu, Fedora, and Arch Linux are using the Linux Kernel 5. x series. However, the Debian distribution appears to be more conservative and still uses the Linux Kernel 4. x series.

Is Linux written in C or C++?

Linux. Linux is also written mostly in C, with some parts in assembly. About 97 percent of the world’s 500 most powerful supercomputers run the Linux kernel.