A can be used to prevent a program from getting stuck in an infinite loop and never returning control back to the operating system Kernel Hardware timer The wait system call All of the above None of the above QUESTION 17 The first state a process created using the fork() system call will be in: Ready state Run state Wait state All of the above None of the above QUESTION 18 The monitor mode of execution in an OS is intended to O allow user process to execute 1/0 instructions without OS help Allow the operating system to execute instructions including privileged ones Allow I/O devices to respond back to the user All of the above None of the above The main purpose of the command line interpreter is to Execute commands issued by the user O Execute commands issued by application programs Execute commands issued by any process All of the above None of the above QUESTION 20 Computer system resources are best utilized when processes of the following type(s) run on the system: Memory-Bound processes OVO-Bound processes A mix of CPU and 1/0 bound processes All of the above None of the above QUESTION 21 Answer the following questions assuming that the code below was run on a shell (e.g bash) #include #include #include void main() { if(fork()) fork(); else printf("Hello World "); } How many total process will be created? Explain your answer How many times the "Hello World" line will be printed? Explain your