RCDD-001

RCDD-001 practice questions, page 6 of 15, with answer review and explanations.

Question 26

A common mode (CM) signal can be converted to a differential mode (DM) signal as a result of a(n):

  1. Unbalanced circuit
  2. Grounded circuit
  3. Poorly timed signal
  4. Improper dielectric material

Question 27

You have discovered a common mode current on the metallic cable sheaths of your building riser cables. What is the MOST likely cause for you to investigate?

  1. Lack of cable protection
  2. Two separate and distinct ground references
  3. Improper secondary protection
  4. Improper physical protection of cable
  5. Improper placement and/or termination of cables

Question 28

Which of the following is NOT a source of electromagnetic interference (EMI)?

  1. Copiers
  2. Transformers
  3. Incandescent lights
  4. Fluorescent lights
  5. Electrical power supply cable

Question 29

What is the recommended MINIMUM separation of unshielded twisted-pair (UTP) cables from fluorescent light fixtures?

  1. 77 mm (3 in)
  2. 30 mm (5.12 in)
  3. 203 mm (8 in)
  4. 324 mm (12.75 in)
  5. 483 mm (19 in)

Question 30

What is the testing frequency of a Category 6/Class E cable?

  1. 100 MHz
  2. 200 MHz
  3. 250 MHz
  4. 500 MHz
  5. 600 MHz