________ is IBM's first 64-bit enterprise operating system with very little downtime.
A) HP-UX
B) Unix
C) Chrome
D) z/OS

Question

Quizplus · Accepted Answer

z/OS is IBM's first 64-bit enterprise operating system that is designed to run on their flagship mainframe systems. It is known for its high level of reliability, availability, and serviceability, with very little downtime. HP-UX and Unix are not IBM operating systems, while Chrome is a web browser and not an operating system.

________ Is IBM's First 64-Bit Enterprise Operating System with Very