Unix hardware level
... 1. Introduction 2. Kernel Architecture 3. File System 4. Memory Management 5. Security 6. Conclusion ...
... 1. Introduction 2. Kernel Architecture 3. File System 4. Memory Management 5. Security 6. Conclusion ...
CS3161 Operating System Principles
... both the CPU and I/O operates simultaneously. Example : Spooling implemented as printer queues to keep printer and CPU busy, while multiple processes can be generating printer output. CS3161 Operating System Principle ...
... both the CPU and I/O operates simultaneously. Example : Spooling implemented as printer queues to keep printer and CPU busy, while multiple processes can be generating printer output. CS3161 Operating System Principle ...
Summary for chapter 2 OPERATING SYSTEM nAJWA kNEFATI
... If the mechanism is properly separated from policy, it can be used either to support a policy decision that I/O-intensive programs should have priority over CPU-intensive ones or to support the opposite policy Microkernel-based operating systems (Section 2.7.3) take the separation of mechanism and p ...
... If the mechanism is properly separated from policy, it can be used either to support a policy decision that I/O-intensive programs should have priority over CPU-intensive ones or to support the opposite policy Microkernel-based operating systems (Section 2.7.3) take the separation of mechanism and p ...
ComputersandFiles
... computers and operating system and competes directly with Microsoft. Apple makes Macintosh computers, ibooks, G5 computers, etc… OS X will not run on a regular PC, it will work only on Apple made computers. Windows will not work on an Apple machine. ...
... computers and operating system and competes directly with Microsoft. Apple makes Macintosh computers, ibooks, G5 computers, etc… OS X will not run on a regular PC, it will work only on Apple made computers. Windows will not work on an Apple machine. ...
What is an Operating System? ¯ Three views of an operating system
... System View: The OS manages the hardware resources of a computer system. ¯ The execution environment provided by the OS includes a variety of abstract ¯ Resources include processors, memory, disks and other storage devices, entities that can be manipulated by a running program. Examples: ...
... System View: The OS manages the hardware resources of a computer system. ¯ The execution environment provided by the OS includes a variety of abstract ¯ Resources include processors, memory, disks and other storage devices, entities that can be manipulated by a running program. Examples: ...
Operating System Overview
... – File open, close, read and write – Control the CPU, or a single user takes over by doing while ( 1 ) ; ...
... – File open, close, read and write – Control the CPU, or a single user takes over by doing while ( 1 ) ; ...
OPERATING SYSTEMS 2015-16 1 OPERATING SYSTEM
... Timesharing (multitasking) is logical extension in which CPU switches jobs so frequently that users can interact with each job while it is running, creating interactive computing Response time should be < 1 second Each user has at least one program executing in memory [process If several jobs ...
... Timesharing (multitasking) is logical extension in which CPU switches jobs so frequently that users can interact with each job while it is running, creating interactive computing Response time should be < 1 second Each user has at least one program executing in memory [process If several jobs ...
• Chapter 1: Introduction
... • Time-Sharing Systems provide the following: – On-Line file system, where the files are on a collection of disks. Therefore, disk management must be provided. – A mechanism for concurrent execution, which requires CPU scheduling schemes. – Mechanisms for job synchronization and communication to ens ...
... • Time-Sharing Systems provide the following: – On-Line file system, where the files are on a collection of disks. Therefore, disk management must be provided. – A mechanism for concurrent execution, which requires CPU scheduling schemes. – Mechanisms for job synchronization and communication to ens ...
slides
... The operating system provides permission management to allow or deny access to files or directories. ...
... The operating system provides permission management to allow or deny access to files or directories. ...
Computer Hardware
... Operating Systems: An Overview The Architecture of Computer Hardware and Systems Software: An Information Technology Approach ...
... Operating Systems: An Overview The Architecture of Computer Hardware and Systems Software: An Information Technology Approach ...
ppt
... Multiprocessing and Distributed Systems • Types of multi-computers • Shared memory multiprocessors • Clusters of separate computers • Distributed systems ...
... Multiprocessing and Distributed Systems • Types of multi-computers • Shared memory multiprocessors • Clusters of separate computers • Distributed systems ...
Unix
... that can hold files and directories). When you are logged in to your account, you are always in some directory. That is called the current directory. Your “home” directory is the directory that you are in by default each time you ...
... that can hold files and directories). When you are logged in to your account, you are always in some directory. That is called the current directory. Your “home” directory is the directory that you are in by default each time you ...
Unix
... that can hold files and directories). When you are logged in to your account, you are always in some directory. That is called the current directory. Your “home” directory is the directory that you are in by default each time you ...
... that can hold files and directories). When you are logged in to your account, you are always in some directory. That is called the current directory. Your “home” directory is the directory that you are in by default each time you ...
Final Exam 2004 PowerPoint
... – A secure “tunnel” through the Internet – Windows XP support two VPN protocols: – Point-to-Point-Tunneling Protocol (PPTP) (9x+) • Allows you to establish a secure remote access pipeline over the public Internet and to “tunnel” IPX or TCP/IP traffic inside ...
... – A secure “tunnel” through the Internet – Windows XP support two VPN protocols: – Point-to-Point-Tunneling Protocol (PPTP) (9x+) • Allows you to establish a secure remote access pipeline over the public Internet and to “tunnel” IPX or TCP/IP traffic inside ...
Abstract View of System Components
... 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. ...
... 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. ...
What is an Operating System?
... • Time-Sharing Systems provide the following: – On-Line file system, where the files are on a collection of disks. Therefore, disk management must be provided. – A mechanism for concurrent execution, which requires CPU scheduling schemes. – Mechanisms for job synchronization and communication to ens ...
... • Time-Sharing Systems provide the following: – On-Line file system, where the files are on a collection of disks. Therefore, disk management must be provided. – A mechanism for concurrent execution, which requires CPU scheduling schemes. – Mechanisms for job synchronization and communication to ens ...
Multiprocessor and Real
... • Central queue needs mutual exclusion – May be a bottleneck when more than one processor looks for work at the same time ...
... • Central queue needs mutual exclusion – May be a bottleneck when more than one processor looks for work at the same time ...
5. Process and thread scheduling
... (When and in which order?) • Dispatching – Short term scheduling (milliseconds) – Select process from Ready List to run • We use the term scheduling to refer to both ...
... (When and in which order?) • Dispatching – Short term scheduling (milliseconds) – Select process from Ready List to run • We use the term scheduling to refer to both ...
Overview of OS/2
... executed. The range of virtual addresses available is called virtual address space, whereas the range of physical addresses available is called physical address space. Virtual memory systems have the characteristic of allowing a program or process to be independent of its actual position in physical ...
... executed. The range of virtual addresses available is called virtual address space, whereas the range of physical addresses available is called physical address space. Virtual memory systems have the characteristic of allowing a program or process to be independent of its actual position in physical ...
13. Operating Systems
... Operating Systems: An Overview The Architecture of Computer Hardware and Systems Software: An Information Technology Approach ...
... Operating Systems: An Overview The Architecture of Computer Hardware and Systems Software: An Information Technology Approach ...
OPERATING SYSTEMS UNIT I Syllabus: Operating Systems
... 1. Explain the various types of computer systems. 2. Explain how protection is provided for the hardware resources by the operating system. 3. What are the system components of an operating system and explain them? 4. What are the various process scheduling concepts? 5. List five services provided b ...
... 1. Explain the various types of computer systems. 2. Explain how protection is provided for the hardware resources by the operating system. 3. What are the system components of an operating system and explain them? 4. What are the various process scheduling concepts? 5. List five services provided b ...
MS-DOS-&-PC-DOS-by-Lindsey-Buranych-Alan-Crouch
... interface. The desire for an interactive, graphical interface (influenced by the Apple Macintosh). – Several programs running under MS-DOS introduced their own graphical interfaces, however, this did not provide much consistency. “Non-Microsoft efforts to provide a consistent interface also failed.” ...
... interface. The desire for an interactive, graphical interface (influenced by the Apple Macintosh). – Several programs running under MS-DOS introduced their own graphical interfaces, however, this did not provide much consistency. “Non-Microsoft efforts to provide a consistent interface also failed.” ...
OS 2200
OS 2200 is the operating system for the Unisys ClearPath Dorado family of mainframe systems. The operating system kernel of OS 2200 is a lineal descendant of Exec 8 for the UNIVAC 1108. Documentation and other information on current and past Unisys systems can be found on the Unisys public support website.See Unisys 2200 Series system architecture for a description of the machine architecture and its relationship to the OS 2200 operating system.