1. If a user program wants to request the operating system to perform a privileged task on its behalf, it performs _________________.

a. an interrupt call b. a service call c. a privilege call d. a system call

2. When __________ call is executed, it is treated by the hardware as a software interrupt.

a. an interrupt b. a service c. a privilege d. a system

3. To prevent a user program from getting stuck in an infinite loop, the operating system implements the _________ technique.

a. timer b. interrupt c. privileged code d. preemption

4. which of the following fetches and executes user-specified commands?

a. command executor b. user command interpreter c. command interpreter

5. when we have multiple processes waiting on each other for a resource, we say _________ has occurred.

a. An interrupt b. a deadlock c. preemption d. starvation

6. The module which gives control of the CPU to the process selected by the short-term scheduler is called _____________

a. dispatcher b. interrupt c. scheduler d. controller

7. there is a list that keeps track of processes residing in main memory waiting to be executed. This list is called _____________

a. job queue b. ready queue c. execution queue d. process queue

8. in DOS, a filename cannot exceed ___________ characters.

a. 9 b. 7 c. 8 d. 17

9. Which of the following operating systems does not support multitasking? a. Linux b. Windows c. DOS d. MAC

10. The initial program that loads when the computer is powered up is called __________ a. boot program b. bootloader c. bootstrap d. boot initializer