By James Chellis, Paul E. Robichaux, Mathew Sheltz, Michael Chacon, Matt Sheltz
Major alterations were made to the MCSA and MCSE courses so as to offer a transparent occupation course for IT execs aiding home windows Server 2003. Sybex, winner of "Best learn publications" in CertCities.com 2002 Readers' selection Awards, bargains MCSA and MCSE applicants this thoroughly up to date version to assist arrange for center examination 70-291, enforcing, dealing with, and holding a Microsoft home windows Server 2003 community Infrastructure. With extra in-depth assurance, real-world situations, and new perform questions that greater simulate these discovered at the genuine examination, this advisor grants the learning and self assurance you want to be triumphant. The accompanying CD comprises a complicated checking out engine with thousands of pattern examination questions, digital flashcards for computer, Pocket computers, and Palm handhelds, besides the total e-book in PDF.
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Extra info for MCSA-MCSE: Windows Server 2003 network infrastructure implementation, management and maintenance study guide
Sample text
Application layer 6. Presentation layer 5. Session layer 4. Transport layer 3. Network layer 2. Data-Link layer Logical Link Control sublayer Media Access Control sublayer 1. Physical layer The LLC sublayer provides Service Access Points (SAPs) that other computers can refer to and use to transfer information from the LLC sublayer to the upper OSI layers. 2 standard. The MAC sublayer, the lower of the two sublayers, provides for shared access to the network adapter and communicates directly with network interface cards.
We will introduce you to the specific protocols that are included with Windows Server 2003 and see how they apply to the various layers of the OSI model. Device Drivers and the OSI Model Every hardware device in a computer requires a software-based device driver to make it work. Some drivers—for instance, the driver for an integrated device electronics (IDE) hard disk or for the keyboard—are built into the operating system. Other devices require that drivers be installed separately when the device is attached or installed in the computer.
At that point, the request packet begins its journey up the layers on the Windows Server 2003 file server. The header that was put on at the Data-Link layer of the Mac OS is stripped off at the Data-Link layer on the Windows Server 2003 machine. The Windows Data-Link layer driver performs the tasks requested in the header and passes the requests to the next, higher layer. This process is repeated until the Windows Server 2003 file server receives the packet and interprets the request. The Windows Server 2003 would then formulate an appropriate response and send it to the Mac.
