Show the services which provided by operating system, Operating System

Assignment Help:

Q. Show the services which provided by operating system?

A) Resource Allocation:

  • If there are more than one user or jobs running at the same instance then resources should be allocated to every one of them. Operating system manages various types of resources require special allocation code i.e.CPU cycles, main memory and file storage.
  • There are a number of resources that require only general request and release code. For allocating CPU, CPU scheduling algorithms are used for better utilization of CPU. CPU scheduling routines consider the speed of CPU and number of available registers as well as other required factors.

B) Accounting :

  • Logs of every user should be kept. It is also essential to keep record of which user how much and what types of computer resources. This log is used for accounting purposes.
  • The accounting data can be used for statistics or for the billing. It is also used to improve system efficiency.

C) Protection:

  • Protection involves ensuring that all access to system resources is controlled. Security starts with each user having to authenticate to system typically by means of a password. External I/O devices should be also protected from invalid access attempts.
  • In protection all the access to the resources is controlled. In multiprocess environment it's possible that one process to interface with the other or with operating system so protection is required.

 


Related Discussions:- Show the services which provided by operating system

What are the requirements for a swapper to work, The swapper work s on t...

The swapper work s on the biggest scheduling priority. Initially it will look for any sleeping process, if not get then it will see for the ready-to-run process for swapping. Bu

Semispace, Semispace works by maintaining two disjoint areas from which mem...

Semispace works by maintaining two disjoint areas from which memory can be allocated. These areas are called the from-space and the to-space. At ?rst, the algorithm allocates memor

Explain memory management using bit maps, MEMORY MANAGEMENT USING BIT MAPS ...

MEMORY MANAGEMENT USING BIT MAPS   In this memory is separated into different allocation units each of some particular size(a few bites).consider every space of size 4k. A

Explain what type of group scope you will use, Question: (a) The actual...

Question: (a) The actual use and scope groups depend on the mode in which a domain is running. There are two domain modes in which you can run a Windows 2000 domain. List and d

Perl script, Write a Perl script assignGrades.pl to assign letter grades to...

Write a Perl script assignGrades.pl to assign letter grades to the students.

Long term scheduler, Long term scheduler calculates which processes are a...

Long term scheduler calculates which processes are admitted to the machine for processing. It accepts the degree of multiprogramming. Once accepted, a job converts a process.

What kernel provide for an effective user level thread, 1. What must a kern...

1. What must a kernel provide for an effective user-level thread implementation? 2. With respect to the quantum q in a scheduling algorithm, explain and discuss the impact of th

Action taken by the operating system when a page fault occur, Q. Under what...

Q. Under what conditions do page faults occur? Explain the actions taken by the operating system when a page fault occurs. Answer: A page fault take places when an access to

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd