I/O and Storage Management
... A read can be serviced by either of the two disks which contains the requested data (improved performance over RAID 0 if reads dominate) A write request must be done on both disks but can be done in parallel Recovery is simple but cost is high ...
... A read can be serviced by either of the two disks which contains the requested data (improved performance over RAID 0 if reads dominate) A write request must be done on both disks but can be done in parallel Recovery is simple but cost is high ...
PPT Chapter 14
... • A generic technique of speeding up access to file data is to use a memory hierarchy consisting of a part of memory and files stored on a disk ...
... • A generic technique of speeding up access to file data is to use a memory hierarchy consisting of a part of memory and files stored on a disk ...
Chapter 2 – outline
... The operating systems that are design to run on Apple computers. One of the latest versions of MAC OS. Provides a list of options or commands. the ability to switch between different applications stored in memory. Operating systems that are used to control and coordinate computers networked or linke ...
... The operating systems that are design to run on Apple computers. One of the latest versions of MAC OS. Provides a list of options or commands. the ability to switch between different applications stored in memory. Operating systems that are used to control and coordinate computers networked or linke ...
The Kaya OS project and the µMPS Hardware Simulator
... widespread use. Even for those with many years of experience teaching operating systems, the creation of the necessary accompanying curricular materials, in essence the design of a complete though unsophisticated operating system broken down into a series of realistically appropriate student assignm ...
... widespread use. Even for those with many years of experience teaching operating systems, the creation of the necessary accompanying curricular materials, in essence the design of a complete though unsophisticated operating system broken down into a series of realistically appropriate student assignm ...
operating system
... available versions include Linux and FreeBSD. Many versions of UNIX, including System V Release 4, merge earlier AT&T releases with BSD features. The recent POSIX standard for UNIX-like operating systems defines a single interface to UNIX. ...
... available versions include Linux and FreeBSD. Many versions of UNIX, including System V Release 4, merge earlier AT&T releases with BSD features. The recent POSIX standard for UNIX-like operating systems defines a single interface to UNIX. ...
PPT
... – Access to shared data by many concurrent users – Also background utility processing must be done ...
... – Access to shared data by many concurrent users – Also background utility processing must be done ...
Unit 3 Operation System
... in 1991, Linux is a freely available multitasking and multiuser operating system. From the outset, Linux was placed under General Public License (GPL). The system can be distributed, used and expanded free of charge. In this way, developers have access to all the source codes, thus being able to int ...
... in 1991, Linux is a freely available multitasking and multiuser operating system. From the outset, Linux was placed under General Public License (GPL). The system can be distributed, used and expanded free of charge. In this way, developers have access to all the source codes, thus being able to int ...
ICS 143 - Introduction to Operating Systems
... Allows overlap - I/O of one job with computation of another. Introduces notion of a job pool that allows OS choose next job to run so as to increase CPU utilization. ...
... Allows overlap - I/O of one job with computation of another. Introduces notion of a job pool that allows OS choose next job to run so as to increase CPU utilization. ...
the linux operating system
... kernel is one that includes virtually all of the OS functionality in one large block of code ...
... kernel is one that includes virtually all of the OS functionality in one large block of code ...
Questions 1 Question 8.1–1: (Solution, p 3) Name at least two
... Solution 8.2–4: (Question, p 1) When a running process requests interaction with a device that cannot immediately respond, the operating system moves it into the Blocked state so that it will not occupy CPU time while the device is working. Solution 8.2–5: (Question, p 1) A process is typically in t ...
... Solution 8.2–4: (Question, p 1) When a running process requests interaction with a device that cannot immediately respond, the operating system moves it into the Blocked state so that it will not occupy CPU time while the device is working. Solution 8.2–5: (Question, p 1) A process is typically in t ...
slides
... control statements is called variously: – command-line interpreter, or – shell (in UNIX). ...
... control statements is called variously: – command-line interpreter, or – shell (in UNIX). ...
ch1
... initial control in monitor control transfers to job when job completes control transfers back to monitor Operating System Concepts ...
... initial control in monitor control transfers to job when job completes control transfers back to monitor Operating System Concepts ...
Advanced Interactive Executive (AIX) operating system overview
... underlying hardware. We had decided to start with the U N I X system as a base. In view of our requirements, however, we were faced with the question of how best to provide the required enhancements. Two strategies could be followed. One was to rewrite the entire kernel. Although theoretically possi ...
... underlying hardware. We had decided to start with the U N I X system as a base. In view of our requirements, however, we were faced with the question of how best to provide the required enhancements. Two strategies could be followed. One was to rewrite the entire kernel. Although theoretically possi ...
BBA IInd SEMESTER EXAMINATION 2008-09
... What are the functions of an operating system? Explain. When do page-faults occur? Describe the actions taken by the operating system when a page-fault occurs. What is Directory Structure? Discuss its relevance. What is Banker’s algorithm? How is it relevant? Explain. What is Page Size? What is the ...
... What are the functions of an operating system? Explain. When do page-faults occur? Describe the actions taken by the operating system when a page-fault occurs. What is Directory Structure? Discuss its relevance. What is Banker’s algorithm? How is it relevant? Explain. What is Page Size? What is the ...
Operating Systems – Processes
... – In batch systems, referred to as jobs – In time shared systems, referred to as user programs or tasks ...
... – In batch systems, referred to as jobs – In time shared systems, referred to as user programs or tasks ...
Manage security settings with Action Center
... If you run a program such as an messaging program or a multiplayer network game that needs to receive information from the Internet or a network, the firewall asks if you want to block or unblock (allow) the connection. If you choose to unblock the connection, Windows Firewall creates an exception ...
... If you run a program such as an messaging program or a multiplayer network game that needs to receive information from the Internet or a network, the firewall asks if you want to block or unblock (allow) the connection. If you choose to unblock the connection, Windows Firewall creates an exception ...
www.cs.hofstra.edu
... Monitors program behavior in real-time for malicious actions – part of OS Look for well defined requests to the OS: modifications to files, disk formats, mods to scripts or macros, changes in config settings, open network connections, etc. IPS – Intrusion Prevention Systems ...
... Monitors program behavior in real-time for malicious actions – part of OS Look for well defined requests to the OS: modifications to files, disk formats, mods to scripts or macros, changes in config settings, open network connections, etc. IPS – Intrusion Prevention Systems ...
Implementing Processes, Threads, and Resources
... • Allocation and use of the primary memory resource – memory allocation among competing processes – enforce memory isolation and sharing ...
... • Allocation and use of the primary memory resource – memory allocation among competing processes – enforce memory isolation and sharing ...
Modes of Use Presentation
... However, modern operating systems can work in a multitude of different ‘modes’. So it is best to think of ‘Modes of Use’ as the different ways or modes operating systems can work in. ...
... However, modern operating systems can work in a multitude of different ‘modes’. So it is best to think of ‘Modes of Use’ as the different ways or modes operating systems can work in. ...
Chapter 8 Input/Output
... • Device sends a special signal to CPU when new data arrives or device ready for next data • CPU can be performing other tasks instead of polling device • “Wake me when we get there.” ...
... • Device sends a special signal to CPU when new data arrives or device ready for next data • CPU can be performing other tasks instead of polling device • “Wake me when we get there.” ...
Document
... Various mouse buttons over objects in the interface cause various actions (provide information, options, execute function, open directory (known as a folder) ...
... Various mouse buttons over objects in the interface cause various actions (provide information, options, execute function, open directory (known as a folder) ...
ppt - University of Illinois at Urbana
... operating system, describe their purpose, and explain how they function. Write, compile, debug, and execute C programs that correctly use system interfaces provided by UNIX (or a UNIXlike operating system). ...
... operating system, describe their purpose, and explain how they function. Write, compile, debug, and execute C programs that correctly use system interfaces provided by UNIX (or a UNIXlike operating system). ...
What is Operating System (OS)
... outline or plan of what everyone is going to do and how it relates to everything else. As many pieces of the project are related to each other this could be very helpful. To date it has been hard to get this interaction happening as most of the group are only just settling into new residences in Swe ...
... outline or plan of what everyone is going to do and how it relates to everything else. As many pieces of the project are related to each other this could be very helpful. To date it has been hard to get this interaction happening as most of the group are only just settling into new residences in Swe ...
Chapter 08
... cryptography as GPG include IPsec, CIPE, CFS and TCFS The Secure Shell (SSH) provides encrypted remote access via a utility that functions like Telnet. SSH also lets other protocols work with it to create secure connections for many purposes ...
... cryptography as GPG include IPsec, CIPE, CFS and TCFS The Secure Shell (SSH) provides encrypted remote access via a utility that functions like Telnet. SSH also lets other protocols work with it to create secure connections for many purposes ...