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It also means that you can add new stations just by running a single new cable. 6 shows a typical star topology. 6 A typical star topology with a hub The design of a star topology resembles an old wagon wheel with the wooden spokes extending from the center point. The center point of the wagon wheel would be considered the hub. Like the wagon wheel, the network’s most vulnerable point is the hub. If it fails, the whole system collapses. Fortunately, hub failures are extremely rare. As with the bus topology, the star topology has advantages and disadvantages.

A. RSA is a type of data encryption used to encrypt data before trans- mission. Please see Chapter 8 for more information. 4. D. Because ISDN is an all-digital network, they don’t use modems, but instead use Terminal Adapters, because they adapt the digital signal from one form to another. Please see Chapter 1 for more information. 5. D. The ipconfig utility does not come with Windows 98, but is instead the IP configuration utility for Windows NT. All the other utilities come as part of Windows 98.

A. ” Please see Chapter 6 for more information. 27. A. 544Mbps; and POTS has 53Kbps. Please see Chapter 7 for more information. 28. A. Of the protocols listed, only the Point-to-Point Protocol (PPP) provides TCP/IP Internet connections over dial-up (modem) connections. Please see Chapter 7 for more information. 29. D. Windows 2000 Server supports many different types of clients, including Windows, Macintosh, and Linux-based clients. Please see Chapter 5 for more information. 30. B. An HTTP proxy cache will cache (or store temporarily) copies of commonly used web page elements on a server on your LAN, thus the common elements will be received directly from the proxy at LAN speeds instead of Internet speeds.

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