Naomi wants to secure a real-time operating system (RTOS). Which of the following techniques is best suited to providing RTOS security?

Using secure firmware, as well as using an RTOS with time and space partitioning, are both common methods to help ensure RTOS security. Unlike traditional operating systems, real-time operating systems are used in applications where they need to deal with inputs immediately. That means that adding additional load like firewalls and antimalware is not a typical component in RTOS applications. For similar reasons, you're unlikely to find a web browser on most devices running an RTOS.