Operating system questions

CS-149 Homework-1 Due Sept-6 at 11:59 PM

1- The interrupt request of a device is connected to IRQ-7 of a slave 8259 and another device interrupt request is at IRQ-3 of Master 8259 within the PC architecture. Which device has a higher interrupt priority and what is your reason?

2- When the PC is turned on, is the program counter cleared to contain zero? Explain.