Across
- 3. in remote parts of the world it is the only option available for Internet connections because installing cables is either too expensive or physically impossible.
- 5. the area of Earth’s surface reached by a satellite’s transmission overcomes the limitations of microwave data relay stations. The higher a satellite orbits, the larger its footprint.
- 8. a medium-range WLAN.
- 11. virtually every object has processing power with either wireless or wired connections to a global network.
- 12. has the smallest range of any short-range wireless networks, and is designed to be embedded in mobile devices such as cell phones and credit cards.
- 13. One major limitation of GEO satellites is that their transmissions take a quarter of a second to send and return from the earth's surface.
- 14. is red light that is not commonly visible to human eyes and common applications of infrared light are found in remote control units for televisions and DVD and CD players.
- 15. have a range of 100 feet or less (e.g., Bluetooth, ultra-wideband (UWB), and near-field communications (NFC)).
- 18. networks using multiple Wi-Fi access points to create a wide area network that can be quite large and are essentially a series of interconnected local area networks.
- 20. a wireless access point that provides service to a number of users within a small geographical perimeter (up to approximately 300 feet).
Down
- 1. networks that connect users to the Internet over a geographically dispersed territory, they typically operate over the licensed spectrum (government regulation).that is, they use portions of the wireless spectrum that are regulated by the government.
- 2. the familiar wireless local area networks (WLANs) and the most common type of Medium-Range network is wireless fidelity (Wi-Fi).
- 4. a high-bandwidth wireless technology with transmission speeds in excess of 100 Mbps which makes UWB a good choice for applications such as streaming multimedia from a personal computer to a television.
- 6. a computer network used for communication among computer devices (e.g., telephones, personal digital assistants, and smartphones) located close to one person
- 7. a real-time, wireless connection between a mobile device and other computing environments, such as the Internet or an intranet
- 9. something that changes its location over time
- 10. a phenomenon that occurs when the functions of many physical devices are included in one other physical device. Consider that your smartphone includes the functions of digital cameras for images and video, radios, televisions, Internet access via Web browsers, recording studios, editing suites, movie theaters, GPS navigators, word processors, spreadsheets, stereos, flashlights, board games, card games, video games, an entire range of medical devices, maps, atlases, encyclopedias, dictionaries, translators, textbooks, watches, alarm clocks, books, calculators, address books, credit card swipers, magnifying glasses, money and credit cards, car keys, hotel keys, cellular telephony, Wi-Fi, e-mail access, text messaging, a full QWERTY keyboard, and many, many others.
- 16. uses radio-wave frequencies to send data directly between transmitters and receivers
- 17. an industry specification used to create small personal area networks.
- 19. without wires