operating systems principles and practice solutions

... recursivebooks.com Operating Systems: Principles and Practice (Second Edition) Volume IV: Persistent Storage by Thomas Anderson and Michael Dahlin Copyright ©Thomas Anderson and Michael Dahlin, 2011-2015 ... abstraction layer work in a modern operating system; the difference between a monolithic and a microkernel operating system; and how policy and mechanism are separated in modern operating systems Concurrency and ... acceptable reliability, both application writers and operating systems designers must understand how storage devices and file systems work This chapter and the next three discuss the key issues: API and abstractions

Ngày tải lên: 09/05/2016, 09:54

... 3 Principles and practice Principles and practice of interactive systems of interactive systems design design 2 2 Chapter 3 Chapter 3   3.1 Introduction 3.1 Introduction   3.6 Design principles ... received   Understand the key issues and Understand the key issues and concepts of engagement concepts of engagement   Understand the general principles of Understand the general principles of ... the general principles of good interactive systems design good interactive systems design   Understand the principles applied to Understand the principles applied to different technological

Ngày tải lên: 23/10/2014, 00:29

... an operating system running on the hardware platform• Platforms and the operating systems of client and server may differ• These lower-level differences are irrelevant as long as a client and ... middleware services and functions– Single process space– Checkpointing Trang 51 Clusters Compared to SMP• SMP is easier to manage and configure• SMP takes up less space and draws less power ... Set of tools that provide a uniform means and style of access to system resources across all platforms• Enable programmers to build applications that look and feel the same Trang 27 Reliability

Ngày tải lên: 16/05/2017, 13:42

... Operating Systems: Internals and Design Principles, 6/E William Stallings Chapter Concurrency: Deadlock and Starvation Patricia Roy Manatee Community ... channels, main and secondary memory, devices, and data structures such as files, databases, and semaphores • Deadlock occurs if each process holds one resource and requests the other Reusable Resources ... process at a time and not depleted by that use Processes obtain resources that they later release for reuse by other processes Reusable Resources • Processors, I/O channels, main and secondary memory,

Ngày tải lên: 16/05/2017, 13:52

... Operating Systems: Internals and Design Principles, 6/E William Stallings Chapter Memory Management Patricia Roy Manatee ... Segmentation The need for memory management • Memory is cheap today, and getting cheaper – But applications are demanding more and more memory, there is never enough! • Memory Management, involves ... address is not within bounds, an interrupt is generated to the operating system Paging • Partition memory into small equal fixed-size chunks and divide each process into the same size chunks • • The

Ngày tải lên: 16/05/2017, 13:52

... Operating Systems: Internals and Design Principles, 6/E William Stallings Chapter Uniprocessor Scheduling Dave Bremer ... is based on process type and execution history Scheduling Formula Bands • • Priorities are recomputed once per second Base priority divides all processes into fixed bands of priority levels – ... deadlines) Types of Scheduling Two Suspend States • Remember this diagram from Chapter Scheduling and Process State Transitions Nesting of Scheduling Functions Queuing Diagram Feedback Scheduling

Ngày tải lên: 16/05/2017, 13:52

... Operating Systems: Internals and Design Principles, 6/E William Stallings Chapter 11 I/O Management and Disk Scheduling Dave Bremer Otago Polytechnic, ... part of the operating system and can be used with any set of multiple disks • • RAID 0, and RAID are supported In the case of RAID (disk mirroring), the two disks containing the primary and mirrored ... main memory and can’t be swapped out – Device is tied to process and unavailable for other processes I/O for Device Types Roadmap – I/O Devices – Organization of the I/O Function – Operating System

Ngày tải lên: 16/05/2017, 13:53

... Operating Systems: Internals and Design Principles, 6/E William Stallings Chapter 12 File Management Roadmap • Overview • • • • • • • • • File organisation and Access File Directories ... Fields and Records • Fields – Basic element of data – Contains a single value – Characterized by its length and data type • Records – Collection of related fields – Treated as a unit File and Database ... of NTFS – Recoverability – Security – Large disks and large files – Multiple data streams – Journaling – Compression and Encryption NTFS Volume and File Structure • Sector – The smallest physical

Ngày tải lên: 16/05/2017, 13:53

... Operating Systems: Internals and Design Principles, 6/E William Stallings Chapter 13 Embedded Systems Dave Bremer Otago Polytechnic, N.Z ©2008, Prentice Hall Roadmap • • • • Embedded Systems ... Characteristics of Embedded Operating Systems eCos TinyOS Embedded System • One of the most important and widely used categories of operating systems • • • Hardware and software designed to perform ... OS and adapt it for embedded purposes – Design a purpose-built OS solely for embedded use Mutexes Mutexes and Condition Variables Mutexes and Condition Variables Roadmap • • • • Embedded Systems

Ngày tải lên: 16/05/2017, 13:53

... Operating Systems: Internals and Design Principles, 6/E William Stallings Chapter 14 Computer Security Threats Roadmap • • • • • • Computer Security Concepts Threats, Attacks, and Assets ... other systems • Remote execution capability – A worm executes a copy of itself on another system • Remote log-in capability – A worm logs on to a remote system as a user and then uses commands ... Roadmap • • • • • • Computer Security Concepts Threats, Attacks, and Assets Intruders Malicious Software Overview Viruses, Worms, and Bots Rootkits Threats • RFC 2828, describes four kinds of threat

Ngày tải lên: 16/05/2017, 13:53

... 15Computer Security TechniquesDave BremerOtago Polytechnic, N.Z.©2008, Prentice HallOperating Systems: Internals and Design Principles, 6/EWilliam StallingsTrang 2• Authentication• Access Control• Intrusion ... Threshold random walk (TRW) scan detectione Rate limitingf Rate haltingTrang 41Botnet and Rootkit Countermeasures• IDS and Anti-Viral techniques are useful against bots– Main aim is to detect and disable ... detect and abort attacks in existing programs Trang 44Compile Time Defenses• Choice of Programming Language– Some languages do not allow some unsafe coding practices• Safe Coding Techniques and

Ngày tải lên: 16/05/2017, 13:53

... Operating Systems: Internals and Design Principles, 6/E William Stallings Chapter Computer System Overview Patricia Roy Manatee Community College, Venice, FL ©2008, Prentice Hall Operating ... store program and data files Cache Memory • • Processor speed faster than memory access speed Exploit the principle of locality with a small fast memory Cache and Main Memory Cache Principles • ... memory, and I/O modules Computer Components: Top-Level View Processor Registers • User-visible registers – Enable programmer to minimize main memory references by optimizing register use • Control and

Ngày tải lên: 16/05/2017, 14:03

... Operating Systems? ?? Symmetric multiprocessing (SMP)– There are multiple processors– These processors share same main memory and I/O facilities Trang 57 Modern Operating Systems? ?? Distributed operating ... system that is in main memory Trang 13 Evolution of Operating Systems? ?? Serial processing– No operating system Trang 14 Evolution of Operating Systems? ?? Serial processing– Schedule time– Setup included ... Setup included loading the compiler, source program, saving compiled program, and Trang 15 Evolution of Operating Systems? ?? Simple batch system– Monitor• Software that controls the sequence of

Ngày tải lên: 16/05/2017, 14:03

... Operating Systems: Internals and Design Principles, 6/E William Stallings Chapter Process Description and Control Dave Bremer Otago Polytechnic, N.Z ... Contains the process elements Created and manage by the operating system • Allows support for multiple processes Process-based Operating System • Process-based operating system – Implement the OS ... Requirements of an Operating System • • Fundamental Task: Process Management The Operating System must – Interleave the execution of multiple processes – Allocate resources to processes, and protect

Ngày tải lên: 16/05/2017, 14:03

... Operating Systems: Internals and Design Principles, 6/E William Stallings Chapter Threads, SMP, and Microkernels Roadmap • Threads: Resource ownership and execution • Symmetric ... inter-process communication and synchronization – How processes are related to each other Windows Processes • Processes and services provided by the Windows Kernel are relatively simple and general purpose ... with other processes • These two characteristics are treated independently by the operating system Processes and Threads • The unit of dispatching is referred to as a thread or lightweight process

Ngày tải lên: 16/05/2017, 14:04

... Operating Systems: Internals and Design Principles, 6/E William Stallings Chapter Concurrency: Mutual Exclusion and Synchronization Dave Bremer Otago Polytechnic, ... Message Passing Readers/Writers Problem Multiple Processes • Central to the design of modern Operating Systems is managing multiple processes – Multiprogramming – Multiprocessing – Distributed Processing ... applications – Extension of modular design • Operating system structure – OS themselves implemented as a set of processes or threads Key Terms Interleaving and Overlapping Processes • Earlier (Ch2)

Ngày tải lên: 16/05/2017, 14:04

... Operating Systems: Internals and Design Principles, 6/E William Stallings Chapter Computer System Overview Patricia Roy Operating System • • • Exploits the ... store program and data files Cache Memory • • Processor speed faster than memory access speed Exploit the principle of locality with a small fast memory Cache and Main Memory Cache Principles • ... memory, and I/O modules Computer Components: TopLevel View Processor Registers • User-visible registers – • Enable programmer to minimize main memory references by optimizing register use Control and

Ngày tải lên: 29/01/2020, 23:57

... Operating Systems: Internals and Design Principles, 6/E William Stallings Chapter 15 Computer Security Techniques Dave ... Threshold random walk (TRW) scan detection Rate limiting Rate halting Botnet and Rootkit Countermeasures • IDS and Anti-Viral techniques are useful against bots – • Main aim is to detect and disable ... detect and abort attacks in existing programs Compile Time Defenses • Choice of Programming Language – • • • Some languages not allow some unsafe coding practices Safe Coding Techniques and Auditing

Ngày tải lên: 30/01/2020, 01:52

... Platforms and the operating systems of client and server may differ - These lower-level differences are irrelevant as long as a client and server Share the same communications protocols and support ... procedure call/return semantics - Widely accepted - Standardized — Client and server modules can be moved among computers and operating systems easily | Trang 31 , ‘Remote Procedure Call Mechanism ... database and enables the use of a high-performance NHI Trang 3 Xà, Client/Server Terminology Applications Programming Interface (API) A set of function and call programs that allow clients and

Ngày tải lên: 30/01/2020, 02:30

... protection, and the effectiveness of com- pliance and enforcement. This chapter examines the tensions between the principles of precaution and pollution prevention, on the one hand, and actual practices ... 1999. 8 Land-based marine pollution and the Arctic: polarities between principles and practice  * The concept of sustainable development calls for the application of manyprinciples ... pp. 1–23; and P. Sands, ‘International Law in the Field of Sustainable Development: Emerging Legal Principles , in W. Lang (ed.), Sustainable Development and International Law (London and Dordrecht:...

Ngày tải lên: 01/11/2013, 09:20