Application services differ from network services in several key ways, including • Network services provide generic transport mechanisms useable by any application. • Application services provide specific transport services optimized for a specific application or purpose. • Network services run on top of IP, which abstracts different kinds of physical transport. • Application services run […]
Take the quiz (either here or use the PTP software) if you want to use the score to help you decide how much time to spend on this chapter. Appendix A, “Answers to the ‘Do I Know This Already?’ Quizzes,” found at the end of the book, includes both the answers and explanations. You can […]
Wide area networks, whether running under the ocean, across poles, or buried underground, are crucial to building everything from the global Internet to large-scale corporate networks. Operators who build network-spanning large geographic regions face some unique challenges in right-of-way and managing the physical plant. Two kinds of providers build these long-haul, or wide area, networks: […]
Metropolitan area networks (MANs) and last-mile delivery—or access—networks are often designed using rings, as shown in Figure 12-5. Figure 12-5 Common Last-Mile Technologies Access networks connect end users—organizations and individual users—to the global Internet. Figure 12-5 shows • A fixed wireless access (FWA) last mile. Connectivity to the towers or transmitters supporting individual homes is […]
Two of the primary challenges to building and operating a large network are crossing the legal boundaries to laying and access cable runs across personal and public property, called right-of- way, and the challenges of physically laying and managing long- distance cables. Each is considered in the following sections. Right-of-Way A story passes around the […]
Take the quiz (either here or use the PTP software) if you want to use the score to help you decide how much time to spend on this chapter. Appendix A, “Answers to the ‘Do I Know This Already?’ Quizzes,” found at the end of the book, includes both the answers and explanations. You can […]
Local area networks, from offices to buildings to homes, are one of the three major classes or types of networks you will encounter in the real world. If you decide to build a career in network engineering, you will probably start by working in an environment with a LAN. Because LANs are almost universal, you […]
Apple’s macOS also has two ways to configure Wi-Fi connectivity: through System Settings and a quick selection option in the Apple Menu Bar. Figure 11-18 shows these two options. Figure 11-18 Accessing Wi-Fi Settings in Apple macOS You can enable or disable Wi-Fi on both hosts by selecting a slider at the top of the […]
You need to consider three basic options when configuring a Wi-Fi AP for home use: the radio settings, beam forming, and security. Figure 11-14 shows a typical configuration screen for a home Wi-Fi system. Figure 11-14 Typical Wi-Fi Network Settings The following sections consider each of these three areas of configuration. SSID and Password The […]
Choosing the Advanced option displays the screen shown in Figure 11-10. Figure 11-10 The Advanced Settings Screen for a Home Use Router The Operation Mode allows you to set the device to either act as only a Wi-Fi access point—sometimes called bridge mode—or as a router and Wi-Fi AP. Choose bridge mode if you have […]
