Operating Systems Unit 1

PART – A (2 MARKS)

1) Differentiate between tightly coupled systems and loosely coupled systems.
2) Define OS
3) What are the differences between Batch OS and Multiprogramming?
4) What are the differences between Multitasking and Multiprogramming?
5) What are the differences between SMP and ASMP?
6) What is Clustered System?
7) What is Real Time System? List out their types.
8) Is Os a resource Manager? If so justify your answer
9) What is the kernel?
10) What are the three main purposes of an operating system?
11) List the four steps that are necessary to run a program on a completely
dedicated machine.
12) What are batch systems?
13) What are privileged instructions?
14) What do you mean by system calls?
15) What is process control block?
16) What are schedulers?
17) What is co-operative process?
18) What are the use of job queues, ready queues and device queues?
19) State the advantage of multiprocessor system.
20) What is the main advantage of multiprogramming?

21) What is the use of inter process communication.
22) What is meant by context switch?
23) What is independent process?
24) What are the benefits of co-operating processes?
25) How can a user program disturb the normal operation of the system?
26) What are the three major activities of an operating system in regard to
Secondary- storage management?
27) What is a thread?
28) What are the benefits of multithreaded programming?
 29) Compare user threads and kernel threads.
 30) What is the use of fork and exec system calls?
 31) Define thread cancellation & target thread.
 32) What are the different ways in which a thread can be cancelled?