VII. Which of the following types of bus determines the direction of the data flow and when components can access the bus? a. Data bus b. Control bus c. Address bus d. None of them VIII. What does the Memory Address Register (MAR) store? a. The memory address of the Arithmetic Logic Unit b. The memory address of the start of RAM c. The memory address of the hard drive d. The memory address of the current memory cell that is to be accessed IX. What is a device controller? a. It is the hardware that controls the transfer of data between the computer and a device b. It is the hardware that controls the transfer of data between the processor and RAM c. It is the software that controls the transfer of data between the processor and RAM d. It is the software that controls the transfer of data between the computer and a device X. What is a device driver? a. It is the hardware that controls the computer on start-up b. It is the software that controls and operates a device connected to a computer c. It is the software that controls the computer on start-up d. It is the hardware that controls and operates a device connected to a computer XI. Which is the most commonly used technique to handle input/output requests in computers? a. Polling b. Semaphores c. Interrupts d. Packets XII. What is the correct description of a bus in a computer? a. A power supply b. A set of wires that interconnect components c. A peripheral device