QUESTION 4 The relationship between which stack attributes is responsible for stack overflows? Stack base and stack pointer Stack limit and stack pointer Stack limit and value at the top of the stack Stack base and stack limit QUESTION 5 The C function iopl() changes the I/O privilege level of the calling process What two actions does this function allow the calling process to perform? (Hint Read the appropriate manual page) Disablelenable interrupts Modify the interrupt vector Bypass memory protection Have unrestricted access to all ports