5. Which component is part of the system unit?
Answer: A
Expansion slot is part of the system unit.
The expansion slot is a component of the system unit, serving as a connection point for additional hardware such as graphic cards or sound cards to enhance the computer's capabilities.
A) Expansion slot
This option is correct because an expansion slot is indeed a part of the system unit. It allows for the installation of various expansion cards, which can add new functionalities to the computer, such as improved graphics or additional ports.
B) Printer
A printer is not part of the system unit; it is an external peripheral device that connects to the computer to produce hard copies of documents. While essential for many users, it does not reside within the system unit itself.
C) Monitor
The monitor is also an external device and is not part of the system unit. It serves as the display for the computer's graphical output but operates independently from the core components housed within the system unit.
D) Keyboard
The keyboard is a peripheral input device that allows users to interact with the computer. Like the printer and monitor, it is not contained within the system unit but connects externally to facilitate user input.
Conclusion
The expansion slot is definitively part of the system unit, while the printer, monitor, and keyboard are all external devices that serve different functions. This distinction underscores the essential role of the expansion slot in enhancing the internal capabilities of the computer, making it the only correct answer among the provided options.