Operating System (OS)
Operating system is

A collection of hardware components
A collection of input-output devices
A collection of software routines
All of these
None of these

ANSWER DOWNLOAD EXAMIANS APP

Operating System (OS)
The CPU, after receiving an interrupt from an I/O device

halts for a predetermined time
hands over control of address bus and data bus to the interrupting device
branches off to the interrupt service routine after completion of the current instruction
None of these
branches off to the interrupt service routine immediately

ANSWER DOWNLOAD EXAMIANS APP