Final answer:
The real work of a cabinet department is done within the department itself. Each department has a head called a secretary who oversees a network of offices and agencies. These departments have different ranks of officials who work towards achieving the department's goals.
Step-by-step explanation:
The real work of a cabinet department is done within the department itself, which is composed of multiple levels of bureaucracy. Each cabinet department has a head called a secretary, who oversees a network of offices and agencies that make up the department. These departments have various ranks such as undersecretaries, assistant secretaries, and deputies, who work to achieve the department's mission-oriented functions.