problem 1: What do you mean by the term extended machine view? What are the benefits of hierarchical operating system structure? Describe.

problem 2: Define the term system call? What are the different classes? Describe by using appropriate exs.

problem 3: What do you mean by the term virtual machine? What are the various benefits of it? prepare down a detailed note.

problem 4: What do you mean by the term system programs? What are their different groups? Describe.

problem 5: What do you mean by the term command interpreter? What are the various functions performed by it? Describe the two different approached to implement it.