Correct Answer:
D. d) All of the mentioned
Explanation:
All of the mentioned
All of the options listed - Windows CE, RTLinux, and VxWorks - are considered real-time operating systems (RTOS). Each is designed to handle time-critical tasks with strict deadlines, making them suitable for applications like industrial control, robotics, and aerospace.
Windows CE: A versatile RTOS developed by Microsoft for embedded systems.
RTLinux: A real-time extension for the Linux kernel.
VxWorks: A widely used commercial RTOS known for its reliability and performance.