Windows Xp Professional Chapter 11

Windows Xp Professional Chapter 11 - 70-270:MCSE Guide to...

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Unformatted text preview: 70-270:MCSE Guide to Microsoft Windows XP ProfessionalChapter 11: Windows XP Professional Application Support70-270: MCSE Guide to Microsoft W2Objectives•Understand the Windows XP Professional system architecture•Deploy Win32 applications•Fine-tune the application environment for DOS and the virtual DOS machine•Fine-tune the application environment for Win16•Work with Windows application management facilities70-270: MCSE Guide to Microsoft W3Windows XP Professional System Architecture•Components:•Environment subsystem•Executive Services•Subsystem:•Operating environment •Emulates another operating system•Kernel modecomponents •Permitted to access system objects and resources directly70-270: MCSE Guide to Microsoft W4Kernel Mode Versus User Mode•Main difference:•Memory usage•User mode:•Each process perceives entire 4 GB of virtual memory as its exclusive property•Upper 2 GB reserved for operating system use•Address space entirely virtual•Processes may share memory areas with other processes70-270: MCSE Guide to Microsoft W5Kernel Mode Versus User Mode (continued)•User mode:•One user mode process cannot crash another•Processes cannot access hardware or communicate with other processes directly•Kernel mode:•May access all hardware and memory in computer•All operations share the same memory space•One kernel mode function can corrupt another’s data •Can cause the operating system to crash70-270: MCSE Guide to Microsoft W6Processes and Threads•Process:•Defines operating environment in which application or any major operating system component runs•Includes:•Own private memory space•Set of security descriptors•Priority level for execution •Processor-affinity data•List of threads70-270: MCSE Guide to Microsoft W7Processes and Threads (continued)•Thread:•Basic executable unit in Windows XP•Every process includes at least one thread•Consists of:•Placeholder information associated with single use of any program that can handle multiple concurrent users or activities•Associated with processes •Do not exist independently70-270: MCSE Guide to Microsoft W8Processes and Threads (continued)•Applications must be explicitly designed to take advantage of threading•Processes can create other processes•Called child processes•Child processes can inherit some of the characteristics and parameters of their parent process70-270: MCSE Guide to Microsoft W9Processes and Threads (continued)•Context•Current collection of Registry values and runtime environment variables in which a process or thread runs70-270: MCSE Guide to Microsoft W10Environment Subsystems•Windows XP Professional •Offers support for various application platforms...
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This note was uploaded on 01/18/2010 for the course CET 2811 taught by Professor Georgewaynerausch during the Spring '09 term at Valencia.

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Windows Xp Professional Chapter 11 - 70-270:MCSE Guide to...

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