Data Communications & Networks I

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Across
  1. 1. T-1 systems use ___________ for signaling.
  2. 4. A network topology known for its redundancy and commonly used on internet WAN links is the ______ topology?
  3. 5. A transmission mode in which information can only be transmitted in one direction.
  4. 9. When a pulse has the same polarity as the preceding pulse this is called______
  5. 12. The device/process used to convert analog signals into digital signals is called a:
  6. 14. Digital +5 volt and 0 or -5 volt pulses are represented as ____ digits 0 and 1.
  7. 17. ASCII, Extended ASCII and Unicode are examples of:
  8. 18. FHSS is an important feature of this.
  9. 19. DS stands for:
  10. 21. The most common topology used in LAN implementation is the?
  11. 23. The most common technique for voice digitization is called:______ Modulation
  12. 26. To determine the voltage magnitude of each sample and compare it to a reference voltage.
  13. 27. What kind of sign transmits light pulses over a glass fiber?
  14. 28. A simple waveform used internally in digital electronic equipment and personal computers is:
Down
  1. 2. Is used to "wake" the receiver.
  2. 3. An analog modulation technique that uses two different frequencies at the same amplitude to represent a binary code?
  3. 6. Multiple Data Terminating Equipment sharing physical transmission facility through common Data Communication Equipment is called:
  4. 7. A ________ pathway between two nodes or devices.
  5. 8. The smallest element of data.
  6. 10. signal When we speak into a standard telephone today our voice is represented by
  7. 11. The input and output connections on a multiplexer are called:
  8. 13. Ethernet LANs use___________ for signaling.
  9. 14. The frequency range required for transmitting.
  10. 15. A set of specific rules and procedures for the control of communications in a network is called a:
  11. 16. A PAN protocol that is popular in home automation controls.
  12. 20. The gradual loss of a transmission signal as it travels over a distance is called:
  13. 22. The common name used for a circuit carrying multiplexed voice channels that is used the telephone company is:
  14. 24. The fundamental analog signal is called a ___________.
  15. 25. Particular format of electrical pulses.
  16. 29. What is the acronym for Personal Area Network?