Download MCSE Self-Paced Training Kit (Exam 70-293): Planning and by Craig Zacker PDF

By Craig Zacker

Get in-depth examination education for the up-to-date examination 70-293, a middle MCSA/MCSE examination for home windows Server 2003and construct real-world activity abilities. comprises case reviews, troubleshooting labs, and extra.

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Additional resources for MCSE Self-Paced Training Kit (Exam 70-293): Planning and Maintaining a Microsoft® Windows Server™ 2003 Network Infrastructure

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In addition, the computers acknowledge the data packets they receive from each other, ensuring that the transmitted data arrives intact. Computers use TCP when they have to transmit relatively large amounts of data that must arrive intact at the destination. The drawback to using TCP is the additional traffic generated by the connection establishment and acknowledgment messages. UDP is a connectionless protocol, which means that two computers can communicate without establishing a connection first, and they do not transmit dedicated acknowledgment messages.

Figure 1-2. A star topology 36 Part 1: Learn at Your Own Pace Part 1: Learn at Your Own Pace 37 Each form of Ethernet that supports UTP cable has its own limitations regarding the number of hubs you can connect. This is one of the main reasons why you must select the data-link layer protocol you intend to use before you start designing the layout of your network infrastructure. For example, if you plan to use standard Ethernet running at 10 megabits per second (Mbps), you can connect up to four hubs on a single LAN, as shown in Figure 1-3.

Also, because of the way light pulses are transferred through the cable, fiber-optic installers must be careful not to bend the cable too sharply. The raw materials for a fiber-optic installation are far more expensive than their UTP counterparts. There are also far fewer fiber-optic installation contractors than UTP experts, and their skills come at a premium. In addition, many network administrators who have the ability to make minor repairs on UTP cables would be lost when faced with a malfunctioning fiber-optic connection.

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