FUNDAMENTALS OF COMPUTER

Detailed explanation-1: -IBM® Z® mainframes run on z/OS ®, Linux®, z/VM®, z/VSE® and z/TPF, with multiple operating systems often running on a single mainframe.

Detailed explanation-2: -In addition to z/OS, four other operating systems dominate mainframe usage: z/VM, z/VSE™, Linux for System z®, and z/TPF. z/OS, a widely used mainframe operating system, is designed to offer a stable, secure, and continuously available environment for applications running on the mainframe.

Detailed explanation-3: -Multiple operating systems may be hosted on a particular mainframe. For instance, it is typical to utilize z/OS alongside Linux on a single mainframe. z/VM, z/VSE, Linux for System z, and z/TPF are the four dominant operating systems for mainframes, along with z/OS.

Detailed explanation-4: -Most batch processing systems for mainframe computers may also be considered “multi-user", to avoid leaving the CPU idle while it waits for I/O operations to complete. However, the term “multitasking” is more common in this context.

Detailed explanation-5: -z/OS is an operating system that runs IBM mainframe computers.