10. Which of the following is NOT in the system state vector? a. the location of the stack b. the privilege mode C. the instruction counter d. the memory protection flag 11. A multi-threaded program: a. b. c. d. e. requires multiple CPU's or cores shares its memory with all its threads needs 2 instruction counter registers is more expensive than a multi-process program requires semaphores and/or mutexes 12. Which of the following will NOT always cause a switch to the kernel? a. ULT thread switching b. request for /O c. addressing memory outside your assigned area d. requesting memory to be shared between processes 13. A spin-lock: a. b. c. d. e. can lead to priority inversion is OK if the spin is short or another CPU exists wastes CPU time avoids a mode switch all of the above 14. Given the following code where will function A run? PID-fork ()spawn a new process a. b. c. If (PID) A) the parent process the child process the kernel 15. Which of the following is NOT the responsibility of the o/S? a. optimize memory usage b. protect data c. optimize device usage d. optimize the program's code 16. Which of the following is NOT in the set of actions that occur from the time a device signals an interrupt, to the time when the 1 level interrupt handler gets control? a. set privilege mode on