Practice Quiz

CEDIA ESPA EST Practice Test

Category - DHTI

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Which of the following statements about Universal Powerline Bus, or UPB, is not true?
  1. UPB uses a 40-volt transmission line.
  2. UPB supports up to 64,000 addresses.
  3. UPB has a transmission reliability of over 99 percent.
  4. UPB is slower than PLC.
Explanation
Answer - D - The statement that is not true about UPB is that UPB is slower than PLC.

Key Takeaway: Universal Powerline Bus, or UPB, is a standard for the communications over electrical wiring between controlled devices in a home automation system. It is based on the X-10 PLC protocol. It is compatible with PLC protocols and has a transmission reliability of over 99 percent. It uses a 40-volt transmission versus the 4-volt transmission of PLC and is 30 times faster than PLC. It supports up to 64,000 addresses.
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