Operating System (OS) Interview Questions And Answers

Operating System (OS) Interview Questions And Answers - Part I.

1. What Is An Operating System?

An operating system is the most important software that runs on a computer. An operating system is a program that acts as an intermediary between the user and the computer hardware. It manages the computer's memory, processes, and all of its software and hardware. It also allows you to communicate with the computer without knowing how to speak the computer's "language". Without an operating system, a computer is useless.

The purpose of an OS is to provide a convenient environment in which user can execute programs in a convenient and efficient manner.

2. What Are The Basic Functions Of Operating Systems?

Functions of an operating system are:

Shield the user from the intricate low-level details and provide an easier to program and more powerful interface to the machine or network => virtual machine.
Manage the system resources: Protection, Scheduling, Sharing, File system, Accounting, etc. This function is obviously important for multitasking (OS2) and multi-using/multitasking (UNIX, VMS) operating systems. Even for single-user/single task, resource management is important (e.g. file system allocation and structure).

3. What Are The Various Components Of A Computer System?

A computer system has four main components. They are:

Hardware (I/P & O/P Devices).
Operating system.
Application programs.
Users.

4. What Are The Basic Purposes Of Different Operating Systems?

The three basic purposes of an operating system are:

To provide a convenient environment for users to execute programs on computer hardware.
To allocate, fairly and efficiently, the computer resources needed to execute the program safely (without adversely affecting other users or the OS itself).
To provide a foundation for evolution to future services, while still supporting existing services.

5. What Is A Bootstrap Program & Where Is It Stored?

A bootstrap program is the initial program that the computer runs when it is powered up or rebooted. It initializes all aspects of the system, from CPU registers to device controllers to memory contents. Typically, it is stored in read-only memory (ROM) or electrically erasable programmable read-only memory (EEPROM), known by the general term firmware, within the computer hardware.

ALSO READ:

6. What is BIOS?
7. What are the advantages and disadvantage of multiprocessor systems?
8. What are the main differences between operating systems for mainframe computers and personal computers?
9. What are the five major activities of an operating system in regard to process management?
10. What are the three major activities of an operating system in regard to memory management?

11. What are the three major activities of an operating system in regard to file management?
12. Discuss various types of operating systems?
13. Discuss Real Time Operating Systems?
14. Discuss Multi-user and Single-user Operating Systems?
15. Discuss Multi-tasking and Single-tasking Operating Systems?

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Tell Me Something About Yourself - Interview Answers.

Try to introduce some of your most important employment-oriented skills as well as your education and accomplishments to the interviewer. Answer to this question is very important because it positions you for the rest of the interview . That's why this statement is often called the "Positioning Statement". One should take the opportunity to show his/her communication skills by speaking clearly and concisely in an organized manner. Since there is no right or wrong answer for this question hence it is important to appear friendly. YOUR ANSWERS CAN BE: 1) I am a person with strong interpersonal skills and have the ability to get along well with people . I enjoy challenges and looking for creative solutions to problems. 2) Besides the details given in my resume, I believe in character values, vision and action. I am quick in learning from mistakes. I am confident that the various tests that you have conducted will corroborate my competencies apti...

Sample Cover Letter / Job Application.

To The General Manager (HR) [ Name and Designation (Bold Words)] Infosys Limited Delhi – 110001 Uttam Agrawal Gandhi Chowk, Bhartee Street [ Name Bhawanipatna, Kalahandi Contact Address Orissa – 766001 Telephone No.] Ph. no - +91-9438170446 [Sub: Application for the position of ___________ in your esteemed organization.] Respected Sir, (Always use ‘Respected’) With reference to your advertisement dated 14th may’ 08 in The Times of India for the position of ___________ . I would like to place myself as a strong contender before you. OR This has reference to your advertisement dated 14th may’ 08 in The Times of India for the position of ____________. In the said connection I take this opportunity to apply for the said position as a strong contender. /*This is the Introduction i.e the first paragraph of your application/* ( Now the Second Paragraph is the Self Introduction) Try to start the second paragraph with the below mentioned lines: - I have the p...

Why From Electronics / Electrical / Mechanical to IT Industry? - Job Interview Answers.

Since I am a student of ECE, as u know that ECE/CSE/IT are sister branches and all are interrelated and secondly I think it will be of my best if I utilize my sharp analytical skills in a software industry so I basically do not have any problem to “SWITCH” from ECE to IT. And I believe flexibility must be there within us to progress in life. Q: IF AFTER SOMETIME YOU START DISLIKING THE JOB, WHAT WOULD YOU DO? Well, if such situation then my first priority would be to look within myself and try to find out any shortcomings or lack of skills and techniques. If such things happen then I would try to improve and rectify myself. Still if I don’t get an answer then I will speak to my seniors and colleagues to learn my mistakes so that I become more user friendly to my organization. Q: WHAT HAVE YOU LEARNT FROM YOUR FAILURES? From my failures I have learnt to analyze myself and find out my shortcomings . Those shortcomings are the areas of future improvement for me and I have...

HR & Technical Interview Questions With Answers.

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