OperatingSystems课件.ppt,CPU调度程序 调度程序 衡量调度的标准 先来先服务调度 先来先服务调度(续) 最短作业优先调度 优先级调度 时间片轮转 多级队列 多级反馈队列调度 多级反馈队列实例 * Scheduling in Interactive Systems (5) Multiple queues Guaranteed scheduli
1、1,Operating System 9-12,Chapter 1,2,Chapter 9,9.1 The security environment 9.2 Basics of cryptography 9.3 User authentication 9.4 Attacks from inside the system 9.5 Attacks from outside the system 9.6 Protection mechanisms 9.7 Trusted systems,Security,3,The Security EnvironmentThreats,Security ...
(1)With operating systems, computers can store and process information. (2)An operating system can control all the computer’s resources. (3)Without operating system, application programs can never be run on the computer. 谢谢观赏! * 总目录 子目录 * 总目录 子目录 * 计算机专业英语 Lesson 6...
《OPERATING SYSTEMS教学课件》ch4.ppt,* Journaling File Systems (2) Operations required to remove a file in UNIX Remove the file from its directory. Release the i-node to the pool of free i-nodes. Return all the disk blocks to the pool of free disk blocks
Chapter11:Mass-StorageSystems OverviewofMassStorageStructureHDDSchedulingNVMSchedulingErrorDetectionandCorrectionStorageDeviceManagementSwap-SpaceManagementStorageAttachmentRAIDStructure OperatingSystemConcepts–10thEdition 11.2 Silberschatz,GalvinandGagne©2018 OverviewofMassStorageStructure ...
2018 General Graph Directory Operating System Concepts – 10th Edition 13.7 Silberschatz, Galvin and Gagne ?2018 File Sharing ? Sharing of files on multi-user systems is desirable ? Sharing may be done through a protection scheme ? On distributed systems, files may be shared across a network ?
OperatingSystemServices(Cont.)Onesetofoperating-systemservicesprovidesfunctionsthatarehelpfultotheuser(Cont):Communications–Processesmayexchangeinformation,onthesamecomputerorbetweencomputersoveranetworkCommunicationsmaybeviasharedmemoryorthroughmessagepassing(packetsmovedbytheOS)Errordetection–OSneedstobe...
Introduction Is the current release of the Windows operating system, produced by Microsoft for use on personal computers, including home and business. G OOD REASONS IT IS BEST TO UPGRADE TO W INDOWS 10 Windows 10 is an os coming from Microsoft pertaining to servers, desktops, laptops, ...
Operating systems [ os ] Done by ASHISH.S 9-A Start What is OS ? os [ OPERATING SYSTEM ] Is also like a back bone to a computer , its basic operation is to manage computer hardware resources and provides common services for computer programs Ex- windows MAC OSX BY APPLE Google chromo...
ProcessConceptProcessSchedulingOperationsonProcessesCooperatingProcessesInterprocessCommunicationCommunicationinClient-ServerSystems OperatingSystemConcepts-7thEdition,Feb7,2006 3.2 Silberschatz,GalvinandGagne©2005 ProcessConcept Anoperatingsystemexecutesavarietyofprograms:Batchsystem–jobsTime-sharedsystems–userprogramsor...