The Linux kernel is the primary virtual machine; it is invoked by the service console. At normal run-time, the vmkernel is running on the bare computer, and the Linux-based service console runs as the first virtual machine. VMware dropped development of ESX at version 4.1, and now uses ESXi, which does not include a Linux kernel.
The definition of zen is slang for feeling peaceful and relaxed. An example of zen as an adjective is to have a zen experience, how you feel during a day at the spa. Zen is a type of Buddhism that focuses on awareness through the practice of meditation. An example of Zen is a rock garden that is tended to meditate.
Prof. Masunaga Reiho answered: Zen is the practice that helps every human being to penetrate to his true self through cross leg sitting (Zazen), and to vitalize this self in daily life.