curriculum windows operating system

... about what operating system is? An operating system (OS) is a collection of programs that act as an interface between a computer user and the computer's hardware The purpose of an operating system ... explore the various tools included with the operating system and assess any additional needs My mission was to learn more about the latest Windows operating system tools using the web: firewalls, ... the operating system is running Therefore, anti-virus programs with built-in scanning at startup will work Simply because a virus will not be able to replicate itself while the operating system

Ngày tải lên: 24/10/2024, 17:15

... Accessing Windows Fortunately for you, the programmer, the Be operating system takes care of much of the work in keeping track of your application’s windows and the user’s actionsthat affect those windows ... in thewindow The ever-present interaction of windows, views, and messages accountsfor the combining of these three topics in this chapter Trang 2Windows 99Window Characteristics A window’s characteristics—its ... the result of zero-based coordinate systems.)The frame coordinates specify the content area of a window—the window’s titletab is not considered For titled windows, you’ll want to use a top coordinate

Ngày tải lên: 26/01/2014, 07:20

... 1Appendix C: Windows 2000Trang 2C.2 Silberschatz, Galvin and Gagne ©2005 Operating System Concepts – 7 th Edition, Feb 11, 2005Trang 3Windows 2000„ 32-bit preemptive multitasking operating system for ... Layered system of modules „ Protected mode — HAL, kernel, executive „ User mode — collection of subsystems z Environmental subsystems emulate different operating systems z Protection subsystems ... 2000 thread Trang 29Environmental Subsystems (Cont.)„ 16-Bit Windows Environment: z Provided by a VDM that incorporates Windows on Windows z Provides the Windows 3.1 kernel routines and sub routines

Ngày tải lên: 28/06/2014, 02:20

... Trang 2Windows NT Some differences between Windows 98 and Windows NT Trang 3Windows 2000 (1) Different versions of Windows 2000 Trang 4Windows 2000 (2) Comparison of some operating system sizes ... Second column gives nearest UNIX equivalent Trang 33File System API Calls in Windows 2000 (2)     A program fragment for copying a file  using the Windows 2000 API functions Trang 35File System Structure (1) The NTFS master file table ... 30Input/Output API Calls Categories of Win32 API calls Trang 31Device Drivers Windows 2000 allows drivers to be stacked Trang 32File System API Calls in Windows 2000 (1) • Principle Win32 API functions for file I/O

Ngày tải lên: 30/01/2020, 01:48

... Layered system of modules ■ Protected mode — HAL, kernel, executive ■ User mode — collection of subsystems ✦ Environmental subsystems emulate different operatingsystems ✦ Protection subsystems ... 21.25Operating System Concepts Environmental Subsystems ■ User-mode processes layered over the native 2000executive services to enable 2000 to run programsdeveloped for other operating system ... any other 2000thread Environmental Subsystems (Cont.) ■ 16-Bit Windows Environment: ✦ Provided by a VDM that incorporates Windows on Windows. ✦ Provides the Windows 3.1 kernel routines and sub

Ngày tải lên: 30/01/2020, 03:02

... (File System) 4 Quản lý nhập xuất (I/O) 5 Quản lý thiết bị lưu trữ (Secondary-storage) 6 Quản lý mạng (Networking) 7 Hệ thống bảo vệ (Protection System) 8 Hệ thông dịch lệnh (Commander-Intpreter System) ... Trang 1PHẦN 2: HỆ ĐIỀU HÀNH (OPERATING SYSTEM) Chương 1: Tổng quan Hệ điều hành Đáp án 1 Tổ chức, quản lý và phân phối tài nguyên ... hỏi Trình bày cách tổ chức bảng trang 2 cấp trong hệ điều hành Windows 32 bit Ý nghĩa của việc làm này ? 2 điểm Đáp án Trong HĐH windows 32 bit Địa chỉ logic 32 bit được tổ chức như sau 10 bit

Ngày tải lên: 19/10/2013, 18:15

... Trang 1THE OPERATING SYSTEM MACHINE LEVEL 1 Trang 2Microprogram or hardwareFigure 6-1 Positioning of the operating system machine level. Trang 3Address space Address ... Trang 19Virtual page tagFlags (b) (c) Format is entirely defined by the operating system Translation table (Operating system) TSB (MMU + sofware) Context Figure 6-18 Data structures used in translating ... programSystem call interface File system Process management Block cache IPC Scheduling Hardware Device drivers User mode Kernel mode Memory mgmt. Signals Figure 6-30 The structure of a typical UNIXsystem.

Ngày tải lên: 12/12/2013, 09:15

... carry out the basic operating functions Ex: Operating systems, utilities, and drivers ATHENA Trang 5Operating System Overview: What is an Operating system ? © An operating system (QOS) is the ... Computer Operating Systems © Windows, Mac OS, Linux, Unix, and DOS © What’s the best-selling operating system’? Windows 2.0 Windows NT 1998 _ 2001 199O 1985 M/indows 1.0 Windows 95 Windows ... Windows 3.1, Windows 3.11 Ex: Windows Server 2000/2003 ¢ Network operating system Ex: Linux, Unix, Windows Server 2000/2003 Ex: Windows Server 2000/2003 Ex: Windows 95, Windows Me, Windows XP

Ngày tải lên: 20/01/2014, 22:20

... multithreaded operating system—and a very efficient one Whileprogrammers can explicitly create threads, much of the work of handling threads is taken care of behind the scenes by the operating system ... with thesystem’s ability to assign threads to processors based on the current load on eachprocessor, makes for a system with very high performance Preemptive Multitasking An operating system that ... method of implementing multitasking is for an operating system to employ preemptive multitasking In a preemptive multitasking environ-ment the operating system can, and does, preempt currently running

Ngày tải lên: 26/01/2014, 07:20

... Be kits hold the software that make up much of the BeOS, sothis library is a part of the Be operating system rather than a file included with theBeIDE environment Library filenames will be prefaced ... thought of as one part, or entity, of a program’s graphical user interface For instance, some operating systems make it easy to represent a window or menu as a resource But a resource doesn’t have ... graphical For instance, an application’s signature—a short, Trang 13unique string that helps the operating system differentiate the application from allother applications—is anything but graphical Yet

Ngày tải lên: 26/01/2014, 07:20

... Messages) include BCheckBox, BRadioButton, and BPictureButton Trang 4Storage KitAll operating systems provide file system capabilities—without them, data couldn’t be saved to disk The Storage Kit ... Byimplementing a hook function, your application in essence extends the functional-ity of the Be operating system The system is responsible for calling a hook func-tion, while your application is responsible ... that the system is aware of.You saw an example of a hook function in the SimpleApp example back inChapter 1—the QuitRequested() function When a window’s close button isclicked on, the Be system

Ngày tải lên: 26/01/2014, 07:20

... threecolor components), and because it is a color system with which many program-mers and end users are familiar with (it’s common to several operating systems).The BeOS defines rgb_color as a struct ... capable of defining colors using any of a number of color spaces A color space is a scheme, or system, for representing colors as numbers There areseveral color space Be-defined constants, each ... of 256 colors A pixel value in the range of 0 to 255 is used as an index into a color map This system color map isidentical for all applications That means that when two programs use thesame

Ngày tải lên: 26/01/2014, 07:20

... messages and handle them.For the most part, system messages are handled automatically; for instance, when a B_ZOOM message is received, the operating system zooms the window But youcannot completely ... object that provides a means for thesystem to recognize the control as a unique entity When the control is selected bythe user, it is this message that the system will send to the window that ... Application Server delivers a system message to an applicationwindow, that message arrives in the form of a BMessage object Your code deter-mines how to handle a system message simply by overriding

Ngày tải lên: 26/01/2014, 07:20

... has no effect This next snippet sets up theWindows menu items shown in Figure 7-8 Assume that data members exist tokeep track of each of the three Windows menu items, and that the menubar andmenu ... a menu with a single menu item in it Choosing the Beep Once item from the Audio menu sounds the system beep Figure 7-2 The SimpleMenuBar program’s window Trang 7Preparing the window class for ... menubar, menu, and menu item By default, the height of a menubar will be 18 pixels (though the system will matically alter the menubar height to accommodate a large font that’s used to dis-play

Ngày tải lên: 26/01/2014, 07:20

... You’re most familiar with the system message: a message that has a corresponding hook function to which the system passes the message A different type of sage the system recognizes and reacts ... includes a line oftext written in each of the three system fonts.Contradictory as it sounds, the user can change the font that’s used for any of theglobal system fonts Figure 8-2 shows that the FontPanel ... shouldn’t force the user to have a particular non-system font on his or her machine, but it can give the user the option of displaying text in a non-system font Consider a word pro-cessor you’re

Ngày tải lên: 26/01/2014, 07:20

... Interfaces (GUIs)Trang 9• Most modern operating systems, like Windows and the Macintosh OS, provide a graphical user interface (GUI). • A GUI lets you control the system by using a mouse to click ... programs.The Windows start button can be used to launch programs. Trang 13• Applications designed to run under one operating system use similar interface elements. • Under an OS such as Windows, ... or make choices The User Interface - Dialog Boxes Trang 19• Some older operating systems, such as DOS (Disk Operating System) and UNIX, use command-line interfaces.• In a command-line interface,

Ngày tải lên: 16/02/2014, 13:20

... Internetwork Operating System l Router Bootup Process l Router Ports and Interfaces l Routers and the Network Layer Trang 4Routers are Computers l A router is a computer: Ÿ CPU, RAM, ROM, Operating System ... program Ÿ Scaled down version of operating system IOS Ÿ Stores startup configuration (including IP addresses, Routing protocol) l Flash memory - Contains the operating system (Cisco IOS) l Interfaces ... boot system commands in startup-config file (NVRAM) If boot system commands in startup-config a Run boot system commands in order they appear in startup-config to locate the IOS b If boot system

Ngày tải lên: 09/03/2014, 13:20

... implement these programs, you should firstunderstand how to harden a system manually Updating the Operating System An operating system may contain many security vulnerabilities and software bugs ... Trang 1Hardening the Operating System Solutions in this chapter: ■ Updating the Operating System ■ Handling Maintenance Issues ■ Manually Disabling Unnecessary ... provide updates to the operating system to fix thesevulnerabilities and bugs In fact, many consulting firms recommend that companies do notpurchase and implement new operating systems until the first

Ngày tải lên: 19/03/2014, 13:35

... associated operating system group, 2-11 sysdef command, 2-17, 2-18 SYSOPER privilege associated operating system group, 2-11 SYSTEM tablespace, description, 5-11 system file, 2-17, 2-18 System Identifier, ... Solaris, 2-31 Character Set Scanner, 1-16 checking distribution of the operating system, 2-5 checking version of the operating system, 2-5 chmod command, 2-22, 2-25, 2-32 chown command, 2-22, 2-25, ... directories, 2-20 external jobs operating system user required for, 2-12 external redundancy Automatic Storage Management redundancy level, 2-27 extjob executable operating system user required for,

Ngày tải lên: 23/03/2014, 16:20

... steps:a. Create a backup copy of the /etc/system file, for example: # cp /etc/system /etc/system.orig b. Open the /etc/system file in any text editor: # vi /etc/system c. To specify new values for ... installed, then install it See your operating system or software documentation for information about installing packages Trang 163. To determine whether an operating system patch is installed, enter ... directory for that file system 2. From the display, identify either one or two file systems that meet the following requirements: ■ Two file systems: Identify one file system with 2.5 GB of free

Ngày tải lên: 07/04/2014, 15:52