talk
... Structure – how is an operating system organized? Sharing – how are resources shared among users Naming – how are resources named (by users or programs) Protection – how is one user/program protected from another Security – how to restrict the flow of information Performance – why is it so slow? Rel ...
... Structure – how is an operating system organized? Sharing – how are resources shared among users Naming – how are resources named (by users or programs) Protection – how is one user/program protected from another Security – how to restrict the flow of information Performance – why is it so slow? Rel ...
Operating Systems - Villanova Computer Science
... An Operating System is a collection of programs Basic tasks of OS BIOS and booting of OS GUI and command line interfaces Cache and Virtual Memory ...
... An Operating System is a collection of programs Basic tasks of OS BIOS and booting of OS GUI and command line interfaces Cache and Virtual Memory ...
Chapter 2 – Operating System Overview
... 1. T / F – An operating system controls the execution of applications and acts as an interface between applications and the computer hardware. 2. T / F – The operating system maintains information that can be used for billing purposes on multi-user systems. 3. T / F – The operating system typically ...
... 1. T / F – An operating system controls the execution of applications and acts as an interface between applications and the computer hardware. 2. T / F – The operating system maintains information that can be used for billing purposes on multi-user systems. 3. T / F – The operating system typically ...
powerpoint
... Issues in Operating Systems • structure - how is the OS organized? • sharing - how are resources shared among users? • naming - how are resources named by users or programs? • protection - how is one user/program ...
... Issues in Operating Systems • structure - how is the OS organized? • sharing - how are resources shared among users? • naming - how are resources named by users or programs? • protection - how is one user/program ...
PDF
... to do more than one thing at a time (spool job to printer and continue typing) Memory protection added back in to protect against buggy applications – not other users! Linux (and even Windows now) allow users to log in remotely and multiple users to be running jobs ...
... to do more than one thing at a time (spool job to printer and continue typing) Memory protection added back in to protect against buggy applications – not other users! Linux (and even Windows now) allow users to log in remotely and multiple users to be running jobs ...
virtual machine
... • Affected by choice of hardware, type of system • User goals and System goals – User goals – operating system should be convenient to use, easy to learn, reliable, safe, and fast – System goals – operating system should be easy to design, implement, and maintain, as well as flexible, reliable, erro ...
... • Affected by choice of hardware, type of system • User goals and System goals – User goals – operating system should be convenient to use, easy to learn, reliable, safe, and fast – System goals – operating system should be easy to design, implement, and maintain, as well as flexible, reliable, erro ...
Operating Systems
... • In a complex machine, having a part move more quickly just because system resources are available may be just as catastrophic as having it not move at all because the system was busy ...
... • In a complex machine, having a part move more quickly just because system resources are available may be just as catastrophic as having it not move at all because the system was busy ...
Lecture 1
... •The CPU is multiplexed among several jobs that are kept in memory and on disk (the CPU is allocated to a job only if the job is in memory). •A job is swapped in and out of memory to the disk. •On-line communication between the user and the system is provided; when the operating system finishes the ...
... •The CPU is multiplexed among several jobs that are kept in memory and on disk (the CPU is allocated to a job only if the job is in memory). •A job is swapped in and out of memory to the disk. •On-line communication between the user and the system is provided; when the operating system finishes the ...
tutorial-02-with
... Benefits typically include the following (a) adding a new service does not require modifying the kernel, (b) it is more secure as more operations are done in user mode than in kernel mode, and (c) a simpler kernel design and functionality typically results in a more reliable operating system. Q 8) ...
... Benefits typically include the following (a) adding a new service does not require modifying the kernel, (b) it is more secure as more operations are done in user mode than in kernel mode, and (c) a simpler kernel design and functionality typically results in a more reliable operating system. Q 8) ...
Enhanced Guide to Managing & Maintaining Your PC, 3e
... What kind of user interface is provided? Can the OS support multitasking? Can the OS easily manage large quantities of primary memory (RAM) and secondary storage? How many and what kinds of applications are written to work with the OS? How powerful must the hardware be to make efficient use of the O ...
... What kind of user interface is provided? Can the OS support multitasking? Can the OS easily manage large quantities of primary memory (RAM) and secondary storage? How many and what kinds of applications are written to work with the OS? How powerful must the hardware be to make efficient use of the O ...
4 - Operating System Basics.ppt
... Types of Operating Systems • Multi user/Multitasking OS – Many users connect to one computer – Each user has a unique session – UNIX, Linux, and VMS – Maintenance can be easy – Requires a powerful computer ...
... Types of Operating Systems • Multi user/Multitasking OS – Many users connect to one computer – Each user has a unique session – UNIX, Linux, and VMS – Maintenance can be easy – Requires a powerful computer ...
Operating Systems CMPSC 473
... • OS competes with the processes for resources – E.g., OS uses disk to swap ...
... • OS competes with the processes for resources – E.g., OS uses disk to swap ...
Operating Systems EDA092, DIT400 Why study Operating Systems
... What does an Operating System do: ...
... What does an Operating System do: ...
LECT03
... o A collection of tasks can be completed in less time with time-sharing than when completed sequentially ...
... o A collection of tasks can be completed in less time with time-sharing than when completed sequentially ...
Introduction and History Sarah Diesburg Operating Systems CS 3430
... operators walk around the machine room ...
... operators walk around the machine room ...
PPT
... Support abstractions through which different applications can share data and notify each other of events ...
... Support abstractions through which different applications can share data and notify each other of events ...
Operating Systems
... Utility software: programs for performing fundamental activities, but not included in operating systems. n ...
... Utility software: programs for performing fundamental activities, but not included in operating systems. n ...
Ch2 OS Structures 1
... delete them, search them, list file Information, permission management. – Communications – Processes may exchange information, on the same computer or between computers over a network • via shared memory or through message passing (packets moved by the OS) – Error detection – OS needs to be consta ...
... delete them, search them, list file Information, permission management. – Communications – Processes may exchange information, on the same computer or between computers over a network • via shared memory or through message passing (packets moved by the OS) – Error detection – OS needs to be consta ...
CH 4 – Review - WordPress.com
... Windows XP successfully merged two customer groups: users of older DOS-based technology and users of Windows NT – True A significant change in windows 7 is the ability to support – multi-touch screen technology Windows 8 is a major redesign that present apps on the Start Screen shown in – tiles Netw ...
... Windows XP successfully merged two customer groups: users of older DOS-based technology and users of Windows NT – True A significant change in windows 7 is the ability to support – multi-touch screen technology Windows 8 is a major redesign that present apps on the Start Screen shown in – tiles Netw ...
CSC221 COMPUTER ORGANZIATION AND ASSEMBLY LANGUAGE
... What is an Operating System? • A program that acts as an intermediary between a user of a computer and the computer hardware.` • An operating system is a software that manages the computer hardware and provides basis for application programs. • The main goals of operating system are: • Execute user ...
... What is an Operating System? • A program that acts as an intermediary between a user of a computer and the computer hardware.` • An operating system is a software that manages the computer hardware and provides basis for application programs. • The main goals of operating system are: • Execute user ...
Operating Systems Overview
... • You double-click an icon to choose (activate) it, for instance, to launch a program. The meaning of “activate” depends on the icon! • The Windows operating system offers two (unique?) tools, called the taskbar and Start button. These help you run and manage programs. Difficult to say these are uni ...
... • You double-click an icon to choose (activate) it, for instance, to launch a program. The meaning of “activate” depends on the icon! • The Windows operating system offers two (unique?) tools, called the taskbar and Start button. These help you run and manage programs. Difficult to say these are uni ...