network operating system principles ppt

... a network is the network operating system. Just as a computer cannot operate without an operating system, a network of computers cannot operate without a network operating system. Every network ... the network operating system s manufacturer, a desktop computer’s networking software can be added either to the computer’s own operating system or be integrated with it. Network operating system ... features of the Windows 2000 operating systems and describe the different types of networks and network operating systems. Module 2, “Administration of a Windows 2000 Network, ” describes routine...

Ngày tải lên: 09/12/2013, 17:15

... 1 Advanced Network and System Administration Accounts and Namespaces 13 LDIF  LDAP Interchange Format.  Standard ... Directories  Make administration easier.  Change data only once: people, accounts, hosts.  Unify access to network resources.  Single sign on.  Single place for users to search (address book)  Improve ... OpenLDAP 5. LDAP Authentication 12 LDAP Schemas Schemas specify allowed objectClasses and attributes. 5 System Administration Directories  Types of directory data  Accounts  Mail aliases and lists...

Ngày tải lên: 20/01/2014, 06:20

... Accept upgrade transfer from other hosts Enabled Actions [U] System XMODEM upgrade [D] Download test subsystem (XMODEM) [T] System TFTP upgrade [X] Exit to Main Menu Enter Selection: ... and Intermediate Routing v 3.0 - Lab 6.2.7a Copyright  2003, Cisco Systems, Inc. Lab 6.2.7a Managing Switch Operating System Files Objective • Create and verify a basic switch configuration. ... An example of the Firmware Configuration Menu is: Catalyst 1900 - Firmware Configuration System Information FLASH: 1024K bytes V8.01.00 : Enterprise Edition Upgrade status: No upgrade...

Ngày tải lên: 24/01/2014, 19:20

... interface standards are EIDE (Enhanced Integrated Drive Electronics) and SCSI (Small Computer System Interface). • EIDE has evolved over the years and has several variants, all of which have...

Ngày tải lên: 16/02/2014, 08:20

Ngày tải lên: 14/03/2014, 20:20

Ngày tải lên: 03/07/2014, 07:20

... multithreaded operating system and a very efficient one. While programmers can explicitly create threads, much of the work of handling threads is taken care of behind the scenes by the operating system ... upgrade its operating system, it must take into account the millions of users that have a large invest- ment in software designed to run on the existing version of its operating system. So no ... with the system s ability to assign threads to processors based on the current load on each processor, makes for a system with very high performance. Preemptive Multitasking An operating system...

Ngày tải lên: 26/01/2014, 07:20

... three color 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 ... StrokeRect(rect8); SetPenSize(12.0); StrokeRect(rect12); Shapes Be claims that the BeOS is an operating system for the graphics community. So it’s hoped that the BeOS makes it easy for programmers ... user clicks the mouse in the MyDrawView view, MouseDown() makes the system aware of the fact that the view needs updating, and the system invokes Draw(): void MyDrawView::MouseDown(BPoint point) { ...

Ngày tải lên: 26/01/2014, 07:20

... the affected view invoking the BView hook function MouseDown(). Besides being the recipient of system messages, a window is also capable of receiving application-defined messages. This lets you ... window. When the user operates the control (typically by clicking on it, as for a button), the system passes the applica- tion-defined message to the window. How the window handles the message ... BWindow::MessageReceived(BMessage* message) { switch(message->what) { // handle B_KEY_DOWN and scripting-related system messages Figure 6-3. Message passed to parent class’s version of MessageReceived() message Application server MessageReceived() BWindow-derived version MessageReceived() BWindow version MessageReceived() BHandler version message message Checkboxes...

Ngày tải lên: 26/01/2014, 07:20

... may not always fit within the confines of a view. Enter the scrollbar. The APIs for other operating systems that employ a graphical user interface include routines to work with scrollbars, but ... setting a view’s font to one of the global system fonts, but you can use SetFont() with any BFont object. Here, one view is having its font set to the global system font be_ plain_font, while another ... machine may have more than the three system fonts installed, your application shouldn’t make any font-related assumptions. You can’t be sure every user has a non -system font your application uses;...

Ngày tải lên: 26/01/2014, 07:20

Ngày tải lên: 08/03/2014, 23:20

Ngày tải lên: 18/03/2014, 00:20

Ngày tải lên: 03/06/2014, 01:29

Ngày tải lên: 28/06/2014, 02:20

Ngày tải lên: 28/06/2014, 02:20

Ngày tải lên: 28/06/2014, 02:20

Ngày tải lên: 23/07/2014, 23:20

Ngày tải lên: 23/07/2014, 23:20

... Proc. 8th Symposium on Operating Systems Principles, pages 127-136. ACM, December, 1981. [10] Jones, A.K. The Object Model: A Conceptual Tool for Structuring Systems. Operating Systems: An Advanced ... and Robertson, G. Accent: A Communication Oriented Network Operating System Kernel. In Proceedings of the 8th Symposium on Operating System Principles, pages 64-75. December, 1981. [16] Rashid, ... K., and Vegdahl, S. StarOS, a Multiprocessor Operating System for the Support of Task Forces. In Proceedings of the 7th Symposium on Operating System Principles, pages 117-129. ACM, December, 1979. [12]...

Ngày tải lên: 12/09/2012, 15:05

... này là hệ điều hành sau này. 1.23 Một số khái niệm của hệ điều hành(tt)  Sự phân lớp hệ thống (System Layering) – Mỗi người sử dụng khác nhau yêu cầu khai thác hệ điều hành ở những mức độ khác...

Ngày tải lên: 18/03/2013, 16:48