Lesson 3 Crossword

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Across
  1. 6. The type of signaling where each bit of data is represented by pulse of electricity or light which as sent at a single fixed frequency.
  2. 7. This topology is an extension of the star topology by introducing multiple central hubs or switches.
  3. 8. Signal experiences this as it travels across network media.
  4. 10. The result of two or more devices communicating on the same medium simultaneously.
  5. 11. Abbreviation of the name given to 802.11 IEEE standards.
  6. 14. The amount data in a network transmission that is not the application data.
  7. 15. A public Wi-Fi network without encryption or authentication.
  8. 17. The operational mode of wirelessly connecting two LANs when a physical connection is impractical.
  9. 18. The result of electrical signals bouncing off the end of a cable, also known as reflection.
  10. 20. The actual amount of data transferred.
Down
  1. 1. The ratio that measures the valid signal against the amount of noise in a network.
  2. 2. Defined by IEEE 802.3u, this is the most commonly used Ethernet today running over Cat 5 or higher cable.
  3. 3. Defined by IEEE 802.3an, runs 10 Gigabit Ethernet on Cat 6A cable and only operates in full-duplex mode.
  4. 4. The physical arrangement of networking devices and cables in a network.
  5. 5. This topology uses a central device that connects to each computer in the network.
  6. 9. Signals that are copied because of reflection and scattering and that arrive at the receiver at different times.
  7. 12. The name of the actual application-to-application data transfer speed.
  8. 13. This topology is when each device is connected to every other device in a network.
  9. 16. The electrical component usually a resistor placed at the end of a physical bus to stop signal bounce.
  10. 19. This topology uses a continuous length of cable to daisy-chain computers together.