Week 0, Introduction
... security: how is the integrity of the OS and its resources ensured? protection: how is one user/program protected from another? performance: how do we make it all go fast? reliability: what happens if something goes wrong – hardware or software extensibility: can we add new features? communication: ...
... security: how is the integrity of the OS and its resources ensured? protection: how is one user/program protected from another? performance: how do we make it all go fast? reliability: what happens if something goes wrong – hardware or software extensibility: can we add new features? communication: ...
The Windows NT 4.0 Environment
... Support for Intel 80486, Pentium, and Pentium Pro-based computers, in addition to RISC (Reduced instruction set computers)-based computers, such as MIPS R4x00, DEC Alpha AXP and PReP-compliant PowerPC-based systems. Additionally, both systems support multiple microprocessors and are symmetric multip ...
... Support for Intel 80486, Pentium, and Pentium Pro-based computers, in addition to RISC (Reduced instruction set computers)-based computers, such as MIPS R4x00, DEC Alpha AXP and PReP-compliant PowerPC-based systems. Additionally, both systems support multiple microprocessors and are symmetric multip ...
Design and implementation of the Lambda µ
... must develop device drivers for them. This feature is very important for embedded systems. However, µ-kernel architecture is slower and consumes more memory than monolithic architecture. Although these week points are improved by L4[5] roughly, but it is not enough. Cost and performance of embedded ...
... must develop device drivers for them. This feature is very important for embedded systems. However, µ-kernel architecture is slower and consumes more memory than monolithic architecture. Although these week points are improved by L4[5] roughly, but it is not enough. Cost and performance of embedded ...
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 ...
Chapter 1 Operating System Overview
... When CPU runs command of monitor, the monitor gains the control. When CPU runs command of user program, the user program gains the control. Transfer the control: First monitor gains the control, when user program load in, it gains the control, when the user program finish or error, the monitor re ...
... When CPU runs command of monitor, the monitor gains the control. When CPU runs command of user program, the user program gains the control. Transfer the control: First monitor gains the control, when user program load in, it gains the control, when the user program finish or error, the monitor re ...
Module Operating Systems (Server)
... 1. Understand and explain the concurrency and deadlock issues, which arise in modern multi-programmed operating systems on uni-processor and multi-processor/multicore systems. 2. Explain different types of operating systems structures 3. Compare and contrast single-threaded and multi-threaded proces ...
... 1. Understand and explain the concurrency and deadlock issues, which arise in modern multi-programmed operating systems on uni-processor and multi-processor/multicore systems. 2. Explain different types of operating systems structures 3. Compare and contrast single-threaded and multi-threaded proces ...
ch13
... Blocking and Nonblocking I/O Blocking - process suspended until I/O completed Easy to use and understand Insufficient for some needs ...
... Blocking and Nonblocking I/O Blocking - process suspended until I/O completed Easy to use and understand Insufficient for some needs ...
What is an Operating System?
... Time-sharing system allows many users to share the computer simultaneously. As the system switches rapidly from one user to the next, each user feels that entire computer system is dedicated to her use. Time slice for each jobs Effective Rapid response time ...
... Time-sharing system allows many users to share the computer simultaneously. As the system switches rapidly from one user to the next, each user feels that entire computer system is dedicated to her use. Time slice for each jobs Effective Rapid response time ...
Solutions - Philadelphia University Jordan
... Question 3:Describe the three general methods used to pass parameters to the operating system during system calls. 3 points 1- pass the parameters in registers which is useful if the amount of data is small and can be fit in register. This method is fast but can pass large amount of data. 2- parame ...
... Question 3:Describe the three general methods used to pass parameters to the operating system during system calls. 3 points 1- pass the parameters in registers which is useful if the amount of data is small and can be fit in register. This method is fast but can pass large amount of data. 2- parame ...
Mac OSX Kernel(XNU)
... kernel mode the top 1GB. When the kernel switches between tasks, it replaces the lower 3GB with pages of another task ...
... kernel mode the top 1GB. When the kernel switches between tasks, it replaces the lower 3GB with pages of another task ...
Operating system
... Group identifier (group ID) allows set of users to be defined and controls managed, then also associated with each process, file Privilege escalation allows user to change to effective ID with more rights, such as setuid ...
... Group identifier (group ID) allows set of users to be defined and controls managed, then also associated with each process, file Privilege escalation allows user to change to effective ID with more rights, such as setuid ...
Chapter 6: Operating Systems: The Genie in the Computer
... being too big to fit into the available RAM. • The operating system divides the program into pieces. • The pieces are stored on the hard disk as if it were additional RAM memory needed by the program. • The pieces are retrieved into RAM as needed. • Disadvantage: This slows the system down, because ...
... being too big to fit into the available RAM. • The operating system divides the program into pieces. • The pieces are stored on the hard disk as if it were additional RAM memory needed by the program. • The pieces are retrieved into RAM as needed. • Disadvantage: This slows the system down, because ...
Operating Systems - bu people
... disables interrupts before entering a critical section, and enables them again after its completion A resource is any object used by a task. It can be anything from an I/O pin to a data structure Shared resources are resources that can be used by more than one task. However, to prevent data corrupti ...
... disables interrupts before entering a critical section, and enables them again after its completion A resource is any object used by a task. It can be anything from an I/O pin to a data structure Shared resources are resources that can be used by more than one task. However, to prevent data corrupti ...
Chapter 2
... • System V: 1983 - A different virtual memory architecture • System V Release 2 (SVR2): 1984 • SVR3: 1987 • Introduced interprocess communication, shared memory, semaphores, message passing, remote file sharing, shared libraries • SVR4:1989 ...
... • System V: 1983 - A different virtual memory architecture • System V Release 2 (SVR2): 1984 • SVR3: 1987 • Introduced interprocess communication, shared memory, semaphores, message passing, remote file sharing, shared libraries • SVR4:1989 ...
Chapter 1 (Part 2) Introduction to Operating System
... A master processor controls the system. The other processors either look to the master for instructions or have predefined tasks. Thus, this defines a master-slave relationship master processor schedules and allocated work to slave processors. More common in extremely large systems ...
... A master processor controls the system. The other processors either look to the master for instructions or have predefined tasks. Thus, this defines a master-slave relationship master processor schedules and allocated work to slave processors. More common in extremely large systems ...
Introduction
... d. Real time. Often used in a dedicated application, this system reads information from sensors and must respond within a fixed amount of time to ensure correct performance. e. Network. Provides operating system features across a network such as file sharing. f. SMP. Used in systems where there are ...
... d. Real time. Often used in a dedicated application, this system reads information from sensors and must respond within a fixed amount of time to ensure correct performance. e. Network. Provides operating system features across a network such as file sharing. f. SMP. Used in systems where there are ...
ppt - Computer Science
... • SPIN doesn’t define thread model, instead defines structure upon which different threading models can be implemented. • This structure is defined by a set of events coordinating processor allocation between schedulers and thread packages • SPIN provides Strands • An application-specific thread pac ...
... • SPIN doesn’t define thread model, instead defines structure upon which different threading models can be implemented. • This structure is defined by a set of events coordinating processor allocation between schedulers and thread packages • SPIN provides Strands • An application-specific thread pac ...
Computer Network and Infrastructure
... user operation (this is the true case) the processor will be idle for a long time. Multiprogramming which has more than one process in the memory solves this. Which means multiple user programs are now available for task switching. A proper process mix will further enhance the CPU and I/O hardware u ...
... user operation (this is the true case) the processor will be idle for a long time. Multiprogramming which has more than one process in the memory solves this. Which means multiple user programs are now available for task switching. A proper process mix will further enhance the CPU and I/O hardware u ...
Introduction to Operating Systems
... E.g., must actually implement the design Must handle corner cases (e.g., handle malloc failure) Don’t use global variables if automatic ones suffice Don’t use deceptive names for variables ...
... E.g., must actually implement the design Must handle corner cases (e.g., handle malloc failure) Don’t use global variables if automatic ones suffice Don’t use deceptive names for variables ...
Operating systems for mobile computing
... Android is not the only smartphone that has the potential to solve major causes of dissatisfaction that users have with their phones. According to Pip Coburn, a global technology strategist, “People change habits when the pain of their current situation exceeds their perceived pain of adopting a pos ...
... Android is not the only smartphone that has the potential to solve major causes of dissatisfaction that users have with their phones. According to Pip Coburn, a global technology strategist, “People change habits when the pain of their current situation exceeds their perceived pain of adopting a pos ...
CC4201519521
... the system. Each file or directory has three basic permission types: read - The read permission means user's ability to read the contents of the file. write write permissions mean's user's ability to write or edit a file or directory. execute - The execute permission means user's ability to execute ...
... the system. Each file or directory has three basic permission types: read - The read permission means user's ability to read the contents of the file. write write permissions mean's user's ability to write or edit a file or directory. execute - The execute permission means user's ability to execute ...
Training Package - Install and optimise operating system software
... Operating System may include but is not limited to: Linux 7.0 or above Windows 2000 or above Apple OS X or above. Software may include but is not limited to: operating systems, including standalone personal computer systems and network operating ...
... Operating System may include but is not limited to: Linux 7.0 or above Windows 2000 or above Apple OS X or above. Software may include but is not limited to: operating systems, including standalone personal computer systems and network operating ...
Operating System
... User interacts with menus and visual images such as buttons and other graphical objects to issue commands ...
... User interacts with menus and visual images such as buttons and other graphical objects to issue commands ...
Process Description and Control
... Steps in a Context Switch Save context of “old” process Update “old” PCB with the new state and any accounting information Move “old” PCB to appropriate queue Select a “new’’ process for execution Update PBC of “new” process Update memory management tables Restore context of “new” process ...
... Steps in a Context Switch Save context of “old” process Update “old” PCB with the new state and any accounting information Move “old” PCB to appropriate queue Select a “new’’ process for execution Update PBC of “new” process Update memory management tables Restore context of “new” process ...