Which of the following queues keeps a set of all processes residing in main memory ready and waiting to execute?

Explanation

Answer Option 3 Concept: Ready Queue : The processes that are residing in the main memory and are ready and waiting to execute are kept on a list called the ready queue. This queue is generally stored as a linked list. A ready-queue header contains pointers to the first and final PCBs in the list. Each PCB(Process Control Block) includes a pointer field that points to the next PCB in the ready queue. Additional Information Job queue : The processes enter the system, they are put into a job queue, which consists of all processes in the system. Device queue : It is the processes that are blocked due to the unavailability of an I/O device those processes constitute this queue.