What is defined as a system that contains both hardware and software to perform a dedicated function?

The correct answer is an embedded system because it specifically refers to a combination of hardware and software designed to perform a specific, dedicated function within a larger system. Unlike general-purpose computers, embedded systems are often optimized for particular tasks and are found in various applications, from household appliances to industrial machines.

An embedded system typically includes a microcontroller or microprocessor along with the necessary software that controls hardware devices, enabling them to function efficiently without the need for user intervention. This makes embedded systems essential for automation and control tasks where performance and reliability are critical.

In contrast, an application server primarily serves applications, a network device focuses on connectivity and communication within a network, and a workstation provides a general computing environment for users to perform various tasks. These options do not meet the specific criteria of having both hardware and software for dedicated functions in the way that embedded systems do.