Final answer:
d) All of the mentioned The answer to which of the options is a real-time operating system is d) All of the mentioned, as RTLinux, VxWorks, and Windows CE are all real-time operating systems designed for handling real-time processes.
Step-by-step explanation:
The question "Which one of the following is a real-time operating system? a) RTLinux b) VxWorks c) Windows CE d) All of the mentioned" refers to various operating systems designed to handle real-time processes.
Real-time operating systems (RTOS) are systems that process data as it comes in, typically within a strict time constraint. They are commonly used in embedded systems where timely task execution is critical.
The correct answer to the question is d) All of the mentioned. RTLinux is a real-time variant of Linux, VxWorks is a widely-used RTOS in the embedded systems industry, and Windows CE is an embedded real-time operating system developed by Microsoft.