Q. System calls are usually invoked by using __________?
Q. A processor needs a software interrupt to __________.
Q. A CPU has two modes: privileged and non-privileged. In order to change the mode from privileged to non-privileged, what is required?
Q. Which of the following is an example of a spooled device?
Q. Which scheduling policy is most suitable for a time-shared operating system?
Q. Which of the following actions is/are typically not performed by the operating system when switching context from process A to process B?
Q. A multi-user, multi-processing operating system cannot be implemented on hardware that does not support __________.
Q. Consider a set of n tasks with known runtimes R1, R2, R3...Rn to be run on a uniprocessor machine. Which of the following processor scheduling algorithms will result in the maximum throughput?
Q. Consider the following statements about user level threads and kernel level threads. Which one of the following statements is false?
Q. Which of the following does not interrupt a running process?
