Practice Test Geeks(DCI) Data Cabling Installer Practice Test
← All DCI Flashcard Decks

Testing and Certification Flashcards

7 cards from real DCI practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Testing and Certification flashcards as text

  1. A Category 6 permanent link fails the NEXT test at high frequencies. Which corrective action is MOST likely to resolve this?

    Answer: Re-terminate the connectors to reduce untwisting at the termination point

    Excessive untwisting at connector terminations is the most common cause of NEXT failures; reducing untwisted length to the minimum required per manufacturer spec typically resolves the issue.

  2. What is the purpose of 'reference cords' when performing an OLTS fiber test using the one-cord reference method?

    Answer: To establish a baseline loss measurement that zeroes out the test cord losses

    Reference cords are used to zero the power meter so that only the losses of the link under test (connectors and cable) are measured, not the losses of the test equipment cords.

  3. Which BICSI credential is specifically designed for professionals who install and test structured cabling systems?

    Answer: TECH (Technician)

    The BICSI TECH credential is targeted at technicians who install and maintain telecommunications distribution systems, including cabling installation and testing.

  4. An OTDR dead zone prevents detection of events close to the launch end. What is the standard method to work around this limitation?

    Answer: Use a launch cable (mandrel or launch lead) to move the dead zone away from the link under test

    A launch cable (also called a mandrel or launch lead) of known length is connected before the link under test, pushing the dead zone onto the launch cable rather than the link being certified.

  5. What is the maximum allowable DC loop resistance for a 24 AWG Category 6 horizontal cable run of 90 meters?

    Answer: 9.38 Ω

    Per TIA-568, the maximum DC resistance for 24 AWG solid copper conductors at 90 meters (permanent link) is approximately 9.38 Ω, which is verified during certification testing.

  6. A contractor submits a certification report showing all links passed with a Level III tester. What does 'Level III' signify?

    Answer: The tester meets the accuracy requirements for certifying up to Category 6A and Class EA cabling

    IEC 61935-1 defines tester accuracy levels; Level III (or Level IIIe) accuracy is required to certify Category 6A/Class EA cabling at 500 MHz with sufficient measurement uncertainty margins.

  7. Which condition would cause a cable certification tester to report a 'FAIL* ' (fail with asterisk) result rather than a standard 'FAIL'?

    Answer: One or more measurements fell within the tester's measurement uncertainty margin near the limit

    A FAIL* result indicates marginal performance where the measurement is within the tester's accuracy uncertainty range of the limit, meaning the link could potentially pass with a more accurate instrument.