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MKICS,BHARUCH Unit 1 Operating System Concepts

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MKICS,BHARUCH Unit 1 Operating System Concepts

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Questions and Answers

What is the definition of an operating system?

An operating system is a program that controls the execution of application programs and acts as an interface between the user of the computer and the computer hardware.

What does the operating system control and co-ordinate?

The use of hardware among the various application programs for the various users.

What are the three objectives or goals of an operating system?

Convenience, Efficiency, Ability to evolve

What are the components of a computer system?

Hardware, software, and data. Signup and view all the answers

How can the hardware and software used in providing applications to a user be viewed?

In a layered or hierarchical fashion. Signup and view all the answers

What should an operating system allow in terms of new system functions?

Permit the effective development, testing, and introduction of new system functions without interfering with service. Signup and view all the answers

What are some reasons for the evolution of a major operating system?

H/W upgrades, new types of H/W, new services, and fixes Signup and view all the answers

Why is an upgrade to the operating system required when the H/W is upgraded or a new type of H/W is invented?

To exploit the new capabilities of the hardware Signup and view all the answers

What is one example of the operating system expanding to offer new services?

Adding new measurement and control tools Signup and view all the answers

What needs to be done when the operating system has faults that need to be fixed?

The faults need to be discovered and fixes made Signup and view all the answers

What are some services provided by the operating system to assist the programmer in creating programs?

Editors and debuggers Signup and view all the answers

What does the operating system handle for the user in terms of program execution?

Loading instructions and data into main memory, initializing I/O devices and files, and preparing other resources Signup and view all the answers

How does the operating system handle access to I/O devices?

It takes care of the details so that the programmer can think in simple reads and writes Signup and view all the answers

What is the role of the operating system in controlling access to files?

It provides protection mechanisms to control file access Signup and view all the answers

In what case does the operating system control access to the system as a whole and to specific system resources?

In a shared system Signup and view all the answers

What are the requirements placed on the design of an operating system due to the need for regular changes?

Modular construction, clearly defined interfaces, and good documentation Signup and view all the answers