The correct answer is D. Controlling the fuel injection system of an automobile engines.
A real-time operating system (RTOS) is an operating system (OS) designed to guarantee a certain level of performance or response time by executing tasks in a timely manner. It is a type of operating system that is designed to run applications that have strict timing requirements. RTOSs are often used in embedded systems, such as those found in automobiles, aircraft, and medical devices.
The other options are not as likely to be used for a real-time operating system. Option A, controlling access to a shared printer in a network, is not a task that requires a real-time operating system. Option B, ensuring that system clock works correctly on server, is a task that could be performed by a real-time operating system, but it is not as critical as the task of controlling the fuel injection system of an automobile engine. Option C, managing the access to system files in a laptop computers, is a task that is not typically performed by a real-time operating system.
In conclusion, the
correct answer is D. Controlling the fuel injection system of an automobile engines.