Interview Questions - Operating Systems

29.
What has triggered the need for multitasking in PCs?
  1. Increased speed and memory capacity of microprocessors together with the support fir virtual memory and
  2. Growth of client server computing

30.
What are the four layers that Windows NT have in order to achieve independence?
  1. Hardware abstraction layer
  2. Kernel
  3. Subsystems
  4. System Services.

31.
What is SMP?
To achieve maximum efficiency and reliability a mode of operation known as symmetric multiprocessing is used. In essence, with SMP any process or threads can be assigned to any processor.

32.
What are the key object oriented concepts used by Windows NT?
Encapsulation, Object class and instance.