CompTIA DHTI+ Practice Questions - Question List

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1. Which of the following is a unit used to measure the energy absorption capability of a surge suppressor?
  1. Amps
  2. Joules
  3. Volts
  4. Ohms
2. Which of the following is a national standard that governs the installation and testing of fire alarm systems?
  1. NFPA 72
  2. NEC 72
  3. IEEE 72
  4. EIA/TIA 72
3. You want to use a reader that does not require a card or key to be inserted or swiped. Which of the following should you use?
  1. Barcode
  2. Magnetic stripe
  3. Electronic key
  4. Proximity card
4. Which of the following cable types can substitute the recommended RS-485 cabling used for an access control system?
  1. Cat 3
  2. Coaxial cable
  3. Cat 5e
  4. Fiber Optic cable
5. John wants to install a wall-mounted motion detector. What is the optimal height at which it should be installed?
  1. Four feet
  2. Two feet
  3. One foot
  4. Seven feet

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