a. Pass parameters in registers
b. Registers pass starting addresses of blocks of parameters
c. Parameters can be placed, or pushed, onto the stack by the program, and popped off the stack by the operating system
The mother board it holds all of the storage
The hypervisor which works on older PC's without hardware virtualization support is called VirtualBox. It is a software allows you to run operating systems in special environment which is called virtual machine. It means that you can run another OS without re-installing existing one.
Answer: the MAC (Media Access Control) address