PPT Chapter 01
... Abstract Views of an Operating System • What is an OS? – Abstract views • To a college student: SW that permits access to the Internet • To a programmer: SW that makes it possible to develop programs on a computer system • To a user of an application package: SW that makes it possible to use the pa ...
... Abstract Views of an Operating System • What is an OS? – Abstract views • To a college student: SW that permits access to the Internet • To a programmer: SW that makes it possible to develop programs on a computer system • To a user of an application package: SW that makes it possible to use the pa ...
3103. Mathematical Foundation for Computer Science
... Deadlock in Distributed Systems Distributed File Systems Parallel Disks -- RAID Check-pointing Algorithms Data base operating system, introduction Concurrency Control for Transaction Processing, issues in parallel and distributed computing systems. Multiprocessor operating systems, multiprocessor op ...
... Deadlock in Distributed Systems Distributed File Systems Parallel Disks -- RAID Check-pointing Algorithms Data base operating system, introduction Concurrency Control for Transaction Processing, issues in parallel and distributed computing systems. Multiprocessor operating systems, multiprocessor op ...
Introduction to Cluster Computing
... Computing http://lcic.org/ “a central repository of links and information regarding Linux clustering, in all its forms.” www.beowulf.org resources for of clusters built on commodity hardware deploying Linux OS and open source software. ...
... Computing http://lcic.org/ “a central repository of links and information regarding Linux clustering, in all its forms.” www.beowulf.org resources for of clusters built on commodity hardware deploying Linux OS and open source software. ...
OPERATING SYSTEMS:
... and others from malicious or ignorant users. The User/Supervisor Mode and privileged instructions. Concurrent threads might interfere with others. This leads to protection of resources by user/supervisor mode. These resources include: I/O Define I/O instructions as privileged; they can be executed o ...
... and others from malicious or ignorant users. The User/Supervisor Mode and privileged instructions. Concurrent threads might interfere with others. This leads to protection of resources by user/supervisor mode. These resources include: I/O Define I/O instructions as privileged; they can be executed o ...
distributed DBMS
... Distributed Database Options (cont.) • Systems - Supports some or all functionality of one logical database – Full DBMS Functionality - All distributed DB functions – Partial-Multi database - Some distributed DB functions • Federated - Supports local databases for unique data requests – Loose Integ ...
... Distributed Database Options (cont.) • Systems - Supports some or all functionality of one logical database – Full DBMS Functionality - All distributed DB functions – Partial-Multi database - Some distributed DB functions • Federated - Supports local databases for unique data requests – Loose Integ ...
Windows Forensics - University of Washington
... Prevent: Windows Update, Time Service, Routing and Remote Access, ...
... Prevent: Windows Update, Time Service, Routing and Remote Access, ...
Software systems and issues Operating system operating systems
... logical view: put characters out in 66 lines of 80 characters physical view: paint individual bits of characters in raster across page ...
... logical view: put characters out in 66 lines of 80 characters physical view: paint individual bits of characters in raster across page ...
operating systems
... multiprocessing sometimes implies that more than one CPU is involved. In multitasking, only one CPU is involved, but it switches from one program to another so quickly that it gives the appearance of executing all of the programs at the same time. ...
... multiprocessing sometimes implies that more than one CPU is involved. In multitasking, only one CPU is involved, but it switches from one program to another so quickly that it gives the appearance of executing all of the programs at the same time. ...
Hassan Al-Makso`s presentation on Making OS Reliable and Secure
... Some are automatically generated, The Nooks team had to write 455 wrappers: 329 for functions the kernel exports and 126 for functions the device drivers export. When a driver tries to modify a kernel object: Its wrapper copies the object into the driver's protection domain, Upon successfu ...
... Some are automatically generated, The Nooks team had to write 455 wrappers: 329 for functions the kernel exports and 126 for functions the device drivers export. When a driver tries to modify a kernel object: Its wrapper copies the object into the driver's protection domain, Upon successfu ...
MultiLibOS: An OS architecture for Cloud
... functionality is replicated on every node. This introduces two challenges. First, most efforts take a clean slate approach that often sacrifices the rich functionality and interfaces of existing general purpose OSes. Second, it is our experience, that issues of scale and fault tolerance (even on a r ...
... functionality is replicated on every node. This introduces two challenges. First, most efforts take a clean slate approach that often sacrifices the rich functionality and interfaces of existing general purpose OSes. Second, it is our experience, that issues of scale and fault tolerance (even on a r ...
Software Engineering Syllabus
... Submit program to operator to run, along with any required ____ and special _________ Operator _____ program materials into machine’s mass storage Batch processing – the execution of jobs by collecting them in a single _____, then executing them _______ further _________ with the user ...
... Submit program to operator to run, along with any required ____ and special _________ Operator _____ program materials into machine’s mass storage Batch processing – the execution of jobs by collecting them in a single _____, then executing them _______ further _________ with the user ...
Software Engineering Syllabus
... Submit program to operator to run, along with any required ____ and special _________ Operator _____ program materials into machine’s mass storage Batch processing – the execution of jobs by collecting them in a single _____, then executing them _______ further _________ with the user ...
... Submit program to operator to run, along with any required ____ and special _________ Operator _____ program materials into machine’s mass storage Batch processing – the execution of jobs by collecting them in a single _____, then executing them _______ further _________ with the user ...
operating system (2a) - BackBenchersCafe.com
... What is the total head movement for the following scheduling schemes? (i) FCFS (ii) SSTF (iii) C-SCAN 8. Write short notes on any two of the following: (i) File allocation methods (ii) Interrupt ...
... What is the total head movement for the following scheduling schemes? (i) FCFS (ii) SSTF (iii) C-SCAN 8. Write short notes on any two of the following: (i) File allocation methods (ii) Interrupt ...
Lecture-1
... while reducing development time. – This means that most of the executable is library code ...
... while reducing development time. – This means that most of the executable is library code ...
DCE (distributed computing environment)
... purpose and that share a common DCE services. It is an administrative domain that allows users,machines, and resources to be managed through functions distributed within the network in which they are in. Members working on the same project in an organization are likely belong to the same cell. ...
... purpose and that share a common DCE services. It is an administrative domain that allows users,machines, and resources to be managed through functions distributed within the network in which they are in. Members working on the same project in an organization are likely belong to the same cell. ...
Implementationsupport
... Up to now, our concern has been slanted away from concerns of the actual programmer. Advances in coding have elevated programming from hardware-specific to interaction technique-specific. Layers of development tools ...
... Up to now, our concern has been slanted away from concerns of the actual programmer. Advances in coding have elevated programming from hardware-specific to interaction technique-specific. Layers of development tools ...
Introduction
... Four levels of computer description Processor level – Architectural Features specified » Interfaces » Instruction sets » Data Representation – More detailed individual component specification Global system structure – Overall system structure is defined – Major components identified » Processors » ...
... Four levels of computer description Processor level – Architectural Features specified » Interfaces » Instruction sets » Data Representation – More detailed individual component specification Global system structure – Overall system structure is defined – Major components identified » Processors » ...
Figure 15.1 A distributed multimedia system
... Network OS's (e.g. Mach, modern UNIX, Windows NT) • In a distributed OS, the user doesn't know (or care) where his programs are – do the same but they also support a wide range of communication standards and running. enable remote processes to access (some) local resources (e.g. files). ...
... Network OS's (e.g. Mach, modern UNIX, Windows NT) • In a distributed OS, the user doesn't know (or care) where his programs are – do the same but they also support a wide range of communication standards and running. enable remote processes to access (some) local resources (e.g. files). ...
Lecture_1 - bridges to computing
... The "Universal Machine" was a long sought goal of early computer scientists. Before operating systems were developed a programmer: ◦ Had to know the exact hardware details of the machine they were working on. ◦ Had to recompile and reload entire program to make even trivial changes. ◦ Couldn't reall ...
... The "Universal Machine" was a long sought goal of early computer scientists. Before operating systems were developed a programmer: ◦ Had to know the exact hardware details of the machine they were working on. ◦ Had to recompile and reload entire program to make even trivial changes. ◦ Couldn't reall ...
Operating Systems
... make up a single process • Useful for applications where performance severely degrades when any part of the application is not running • Threads often need to synchronize with each other ...
... make up a single process • Useful for applications where performance severely degrades when any part of the application is not running • Threads often need to synchronize with each other ...
Slide 1
... Many modern systems even make it possible to add and modify devices on the fly, without shutting down the system. USB and FireWire both provide this capability. ...
... Many modern systems even make it possible to add and modify devices on the fly, without shutting down the system. USB and FireWire both provide this capability. ...
Lecture 11
... Many modern systems even make it possible to add and modify devices on the fly, without shutting down the system. USB and FireWire both provide this capability. ...
... Many modern systems even make it possible to add and modify devices on the fly, without shutting down the system. USB and FireWire both provide this capability. ...
Introduction to Operating Systems
... • Act as a system manager / resource manager - controls hardware and software - act as an interface between user and system • Manages resources of the computer effectively ...
... • Act as a system manager / resource manager - controls hardware and software - act as an interface between user and system • Manages resources of the computer effectively ...
Distributed operating system
A distributed operating system is a software over a collection of independent, networked, communicating, and physically separate computational nodes. Each individual node holds a specific software subset of the global aggregate operating system. Each subset is a composite of two distinct service provisioners. The first is a ubiquitous minimal kernel, or microkernel, that directly controls that node’s hardware. Second is a higher-level collection of system management components that coordinate the node's individual and collaborative activities. These components abstract microkernel functions and support user applications.The microkernel and the management components collection work together. They support the system’s goal of integrating multiple resources and processing functionality into an efficient and stable system. This seamless integration of individual nodes into a global system is referred to as transparency, or single system image; describing the illusion provided to users of the global system’s appearance as a single computational entity.