Course Overview, History
... • Simple batch systems (mid1950s – mid 1960s) – Permanently resident OS in primary memory – Loaded a single job from card reader, ran it, loaded next job... – Control cards in the input file told the OS what to do – Spooling allowed jobs to be read in advance onto tape/disk ...
... • Simple batch systems (mid1950s – mid 1960s) – Permanently resident OS in primary memory – Loaded a single job from card reader, ran it, loaded next job... – Control cards in the input file told the OS what to do – Spooling allowed jobs to be read in advance onto tape/disk ...
CS 414/415 Systems Programming and Operating Systems
... – Overlaps I/O processing of a job with computation of another – Benefits from I/O devices that can operate asynchronously – Requires the use of interrupts and DMA – Optimizes for throughput at the cost of response time ...
... – Overlaps I/O processing of a job with computation of another – Benefits from I/O devices that can operate asynchronously – Requires the use of interrupts and DMA – Optimizes for throughput at the cost of response time ...
45.3% of employees are aware that their workplace can be
... Seminar/workshops instructed by an internal specialized team (43.7%); Seminar/workshops instructed by an external specialized firm (29.2%). 【Survey Overview】 Polled: Working men and women over 20 years old, nation wide Survey period: November 10-11, 2016 Survey method: Internet Valid response: 1,436 ...
... Seminar/workshops instructed by an internal specialized team (43.7%); Seminar/workshops instructed by an external specialized firm (29.2%). 【Survey Overview】 Polled: Working men and women over 20 years old, nation wide Survey period: November 10-11, 2016 Survey method: Internet Valid response: 1,436 ...
Staff ID Cards Poster
... Always wear your Staff I.D. card while at work. Wear it in a place so it is always visible. Be wary of anyone following you through swipe card zones. ...
... Always wear your Staff I.D. card while at work. Wear it in a place so it is always visible. Be wary of anyone following you through swipe card zones. ...
Introduction
... – Overlaps I/O processing of a job with computation of another – Benefits from I/O devices that can operate asynchronously – Requires the use of interrupts and DMA – Optimizes for throughput at the cost of response time ...
... – Overlaps I/O processing of a job with computation of another – Benefits from I/O devices that can operate asynchronously – Requires the use of interrupts and DMA – Optimizes for throughput at the cost of response time ...
Southeastern University
... –operating system code is executed as a separate entity that operates in privileged mode Execution Within User Processes –operating system software within context of a user process –process executes in privileged mode when executing operating system code Process-Based Operating System –major ker ...
... –operating system code is executed as a separate entity that operates in privileged mode Execution Within User Processes –operating system software within context of a user process –process executes in privileged mode when executing operating system code Process-Based Operating System –major ker ...
Global Challenges
... • The 1988 ITR does not contain explicit provisions on security in the use of ICTs – The reference in Article 9 to avoiding technical harm was added in light of the Morris worm, or Internet worm of 2 November 1988. • Some specific proposals have been submitted to CWG-WCIT that are clearly related to ...
... • The 1988 ITR does not contain explicit provisions on security in the use of ICTs – The reference in Article 9 to avoiding technical harm was added in light of the Morris worm, or Internet worm of 2 November 1988. • Some specific proposals have been submitted to CWG-WCIT that are clearly related to ...
Operating Systems (OS)
... Example of open specifications: POSIX (Portable Operating System Interface) ...
... Example of open specifications: POSIX (Portable Operating System Interface) ...
Architectural Support for Protection Rings
... Although this is a precise definition, virtual memory has always been implemented by pairing a fast DRAM Main Memory with a bigger, slower “backing store”. Originally, this was magnetic drum memory, but it soon became magnetic disk memory. The invention of time–sharing operating systems introduced a ...
... Although this is a precise definition, virtual memory has always been implemented by pairing a fast DRAM Main Memory with a bigger, slower “backing store”. Originally, this was magnetic drum memory, but it soon became magnetic disk memory. The invention of time–sharing operating systems introduced a ...
Operating Systems
... Operating Systems Learning outcomes of the curricular unit: This discipline aims to introduce the fundamental knowledge concerning the modern operating systems design. More specifically, the operating system most important functions and their main associated concepts are presented - process manageme ...
... Operating Systems Learning outcomes of the curricular unit: This discipline aims to introduce the fundamental knowledge concerning the modern operating systems design. More specifically, the operating system most important functions and their main associated concepts are presented - process manageme ...
09CS212 OPERATING SYSTEM Credits: 3:0:0 Course Objective: To
... Architecture - Operating System Structure - Operating System Operations - Process Management - Memory Management – Storage Management – Protection and Security – Distributed Systems – Special Purpose Systems - Computing Environments – Operating System Services – User Operating System Interface – Sys ...
... Architecture - Operating System Structure - Operating System Operations - Process Management - Memory Management – Storage Management – Protection and Security – Distributed Systems – Special Purpose Systems - Computing Environments – Operating System Services – User Operating System Interface – Sys ...
batch systems
... – A system has many resources: CPU time, memory, disk space, access to I/O devices – The OS is in charge of allocating these resources – Many possible policies: • allocate fairly; give more to those who pay more; give it all to me ...
... – A system has many resources: CPU time, memory, disk space, access to I/O devices – The OS is in charge of allocating these resources – Many possible policies: • allocate fairly; give more to those who pay more; give it all to me ...
Course Title: Operating System
... explain the objectives and functions of modern operating systems. describe the logical structure of, and facilities provided by, a modern operating system. analyze the tradeoffs inherent in operating system design. differentiate between the concepts of processes, threads and multithreading. demonstr ...
... explain the objectives and functions of modern operating systems. describe the logical structure of, and facilities provided by, a modern operating system. analyze the tradeoffs inherent in operating system design. differentiate between the concepts of processes, threads and multithreading. demonstr ...
Network Security - University of Hull
... Data about entities is being protected Entities can be People, Organisations or Objects Entities themselves encompass other entities – Collection or Containment Security involves: Physical Changes – Commissioning Operational Procedure – What they do Structure – Interrelations ...
... Data about entities is being protected Entities can be People, Organisations or Objects Entities themselves encompass other entities – Collection or Containment Security involves: Physical Changes – Commissioning Operational Procedure – What they do Structure – Interrelations ...
Structure of Operating Systems
... • In the idle loop: – OS executes an infinite loop (UNIX) – OS performs some system management & profiling – OS halts the processor and enter in low-power mode (notebooks) – OS computes some function (DEC’s VMS on VAX computed Pi) • OS wakes up on: – interrupts from hardware devices – traps from use ...
... • In the idle loop: – OS executes an infinite loop (UNIX) – OS performs some system management & profiling – OS halts the processor and enter in low-power mode (notebooks) – OS computes some function (DEC’s VMS on VAX computed Pi) • OS wakes up on: – interrupts from hardware devices – traps from use ...
Operating Systems Concepts
... Describe the overall functions of an operating system in a complete computer system. Differentiate between processes based and thread based execution. Calculate various parameters with regard to methods of paging, segmentation in memory management functions. List down the algorithms for sync ...
... Describe the overall functions of an operating system in a complete computer system. Differentiate between processes based and thread based execution. Calculate various parameters with regard to methods of paging, segmentation in memory management functions. List down the algorithms for sync ...
Operating- System Structures
... executing process, while the exec call overlays a new process based on a different executable over the calling process. ...
... executing process, while the exec call overlays a new process based on a different executable over the calling process. ...
![[Lecture 1, part 3] Kernel interaction with the hardware: Interrupt](http://s1.studyres.com/store/data/014183875_1-7af0f6b03bedcfbf8972c6054b446a98-300x300.png)
[Lecture 1, part 3] Kernel interaction with the hardware: Interrupt
... [Lecture 1, part 3] Kernel interaction with the hardware: Interrupt: Like input / output, user input, between kernel and device driver. Devices call back by interrupts. They are serviced immediately. And they are user transparent. Implementation: Each device only has limited number of interrupt even ...
... [Lecture 1, part 3] Kernel interaction with the hardware: Interrupt: Like input / output, user input, between kernel and device driver. Devices call back by interrupts. They are serviced immediately. And they are user transparent. Implementation: Each device only has limited number of interrupt even ...
Chapter 1 - OS Overview
... • A virus is any unauthorized program that is designed to: – gain access to a computer system – lodge itself in a secretive way by incorporating itself into other legitimate programs – replace itself ...
... • A virus is any unauthorized program that is designed to: – gain access to a computer system – lodge itself in a secretive way by incorporating itself into other legitimate programs – replace itself ...
lecture 14: virtualization
... 1. A virtualization system that partitions a single physical “machine” into multiple virtual machines. 2. Terminology a. Host – the machine and/or software on which the VMM is implemented b. Guest – the OS which executes under the control of the VMM Hypervisor: 1. In computing, a hypervisor (also: v ...
... 1. A virtualization system that partitions a single physical “machine” into multiple virtual machines. 2. Terminology a. Host – the machine and/or software on which the VMM is implemented b. Guest – the OS which executes under the control of the VMM Hypervisor: 1. In computing, a hypervisor (also: v ...
Glenbriar TakeStock! - Glenbriar Technologies Inc.
... • Provides a secure import/export facility that controls exchange between classified networks • Provides a guarded data feed that has flexible interfaces to allow integration with outside applications ...
... • Provides a secure import/export facility that controls exchange between classified networks • Provides a guarded data feed that has flexible interfaces to allow integration with outside applications ...
System Structures
... files and directories, create and delete them, search them, list file Information, permission ...
... files and directories, create and delete them, search them, list file Information, permission ...
Operating System
... Modern Operating Systems • Symmetric multiprocessing (SMP) – There are multiple processors – These processors share same main memory and I/O facilities – All processors can perform the same functions ...
... Modern Operating Systems • Symmetric multiprocessing (SMP) – There are multiple processors – These processors share same main memory and I/O facilities – All processors can perform the same functions ...
Total cost of ownership – Linux vs. QNX realtime operating system
... A significant issue impacting time-to-market is the availability and quality of device drivers. Ideally, the hardware vendor would create, maintain and support high quality drivers for their hardware. But unfortunately, Linux’s licensing model has a direct (and negative) impact here. Leading-edge ha ...
... A significant issue impacting time-to-market is the availability and quality of device drivers. Ideally, the hardware vendor would create, maintain and support high quality drivers for their hardware. But unfortunately, Linux’s licensing model has a direct (and negative) impact here. Leading-edge ha ...
Support: Ticket, Process, and Expectations
... Ensure email password is secure (forgot my password feature generally relies on your email account being secure) Avoid opening unknown email attachments ...
... Ensure email password is secure (forgot my password feature generally relies on your email account being secure) Avoid opening unknown email attachments ...