Question

2.1 The services and functions provided by an operating system can be
divided into two main categories. Briefly describe the two categories
and discuss how they differ.​

Answer 1

Answer:

One class of services provided by an operating system is to enforce protection

between different processes running concurrently in the system. Processes are

allowed to access only those memory locations that are associated with their

address spaces. Also, processes are not allowed to corrupt files associated with other

users. A process is also not allowed to access devices directly without operating

system intervention. The second class of services provided by an operating system is

to provide new functionality that is not supported directly by the underlying

hardware. Virtual memory and file systems are two such examples of new services

provided by an operating system.