On which events is the cpu scheduler invoked for a kernel with cooperativescheduling (select all that apply) ?
a) when a process calls exit()
b) when the time slice of a process expires
c) when a process makes a read system call to read from a file
d) when an i/o interrupt occurs and the running process switches from the running state to the ready state

Python. primary u. s. interstate highways are numbered 1-99. odd numbers (like the 5 or 95) go north/south, and evens (like the 10 or 90) go east/west. auxiliary highways are numbered 100-999, and service the primary highway indicated by the rightmost two digits. thus, the 405 services the 5, and the 290 services the 90. given a highway number, indicate whether it is a primary or auxiliary highway. if auxiliary, indicate what primary highway it serves. also indicate if the (primary) highway runs north/south or east/west.