DCI Cabling Standards 3 — Questions and Answers
Question 1: Which category of UTP cable is the minimum required by TIA-568-C.2 for a new horizontal cabling installation?
- Category 5e
- Category 6 (Correct answer)
- Category 6A
- Category 7
Correct answer: Category 6
TIA-568-C.2 sets Category 6 as the minimum recognized standard for new horizontal UTP installations.
Question 2: TIA-942 is specifically the standard for which type of facility?
- Healthcare telecommunications rooms
- Data centers (Correct answer)
- Industrial manufacturing plants
- Residential multi-tenant buildings
Correct answer: Data centers
TIA-942 defines the Telecommunications Infrastructure Standard for Data Centers, covering structured cabling, pathways, and spaces.
Question 3: What is the purpose of ANSI/TIA-569 in a structured cabling system?
- Specifying cable transmission performance
- Defining pathways and spaces for telecommunications (Correct answer)
- Administering labels and records
- Grounding telecommunications equipment
Correct answer: Defining pathways and spaces for telecommunications
ANSI/TIA-569 covers Telecommunications Pathways and Spaces, specifying conduit, raceway, and room requirements.
Question 4: According to TIA-568, what is the maximum total channel length for a horizontal copper cabling channel?
- 90 meters
- 95 meters
- 100 meters (Correct answer)
- 105 meters
Correct answer: 100 meters
The total end-to-end channel length, including horizontal cable, patch cords, and equipment cords, must not exceed 100 meters.
Question 5: Which standard defines the wire pair assignments for 8-pin modular (RJ-45) connectors used in structured cabling?
- ANSI/TIA-568-B (Correct answer)
- ANSI/TIA-604
- ANSI/TIA-569
- ANSI/TIA-606
Correct answer: ANSI/TIA-568-B
ANSI/TIA-568-B specifies the T568A and T568B wiring configurations for 8-pin modular connectors.
Question 6: What does the 'A' suffix in Category 6A cable primarily address compared to Category 6?
- Longer maximum run length
- Alien crosstalk (AXT) performance at 500 MHz (Correct answer)
- Improved fire resistance
- Lower insertion loss at DC
Correct answer: Alien crosstalk (AXT) performance at 500 MHz
Category 6A (Augmented) adds specifications for alien crosstalk (AXT) and extends bandwidth to 500 MHz to support 10GBASE-T.
Question 7: Under ANSI/TIA-568, how many telecommunications outlets (TOs) are required at a minimum per work area?
- One
- Two (Correct answer)
- Three
- Four
Correct answer: Two
TIA-568 requires a minimum of two telecommunications outlets per work area to support both voice and data.
DCI Cabling Standards 3
Which category of UTP cable is the minimum required by TIA-568-C.2 for a new horizontal cabling installation?