Which operating system (OS) service ensures the proper operation of the central processing unit (CPU), memory, and input/output (I/O)? Communication Resource allocation Program execution Logging What was the role of the operating system (OS) in second generation computers? Multitasking, scheduling, and interacting with peripheral devices Automating the compilation, loading, and execution of programs Increasing computation power by using parallel processing Enforcing time-sharing and interacting with keyboards and display terminals Which solution is used by CPUs as a security measure to grant access to input/output (I/O) devices and CPU registers? General libraries User mode Privileged instructions Graphical user interface Which state does an operating system (OS) place a process in to allow debugging or regulate performance? Suspended Ready Terminated Blocked