main()

{

fork();

 

printf(“Hello World!”);

}

Output for the above unix program is

- Normal completion

- Time limit exceeded

- Memory unavailable

- Bounds violation

- Protection error

- Arithmetic error

- Time overrun

- I/O failure

- Invalid instruction

- Privileged instruction

- Data misuse

- Operator or OS intervention

- Parent termination.

15 jobs.

When the OS at the explicit request of another process creates a process, this action is called process spawning.

It does not have the features like

1. ability to support multiple processors


2. virtual storage


3. source level debugging

No Windows NT is not so, because its not implemented in object oriented language and the data structures reside within one executive component and are not represented as objects and it does not support object oriented capabilities.

Encapsulation, Object class and instance.

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.

1.Hardware abstraction layer

2.Kernel

3.Subsystems

4.System Services.