Given that an operating system has a degree of multiprogramming of 8, answer the following. if 4 processes are in the ready queue, 1 is running, and 3 are in the disk queue, can we let a new process enter the system? justify. if 4 processes are in ready queue, 1 is running, and 2 are in the disk-1 queue, and 1 just completed execution, can we let a new process enter the system? justify.