C7 Network Cabling & Data Infrastructure 2 — Questions and Answers
Question 1: What is the maximum pulling tension allowed for a 4-pair Cat 6 UTP cable during installation?
- 25 lbf (Correct answer)
- 50 lbf
- 110 lbf
- 200 lbf
Correct answer: 25 lbf
TIA-568 specifies a maximum pulling tension of 25 lbf (110 N) for 4-pair UTP cables to prevent damage to the conductors and insulation.
Question 2: Which connector type is used for terminating Cat 6A cabling in a high-density 10GbE data center patch panel?
- RJ-45 (8P8C) (Correct answer)
- RJ-11 (6P4C)
- LC duplex fiber
- BNC coaxial
Correct answer: RJ-45 (8P8C)
Cat 6A copper cabling uses the standard RJ-45 (8P8C) connector, which supports 10GbE up to 100 meters.
Question 3: What is the minimum bend radius for a Cat 6 UTP cable after installation (static bend)?
- 4 times the cable diameter (Correct answer)
- 8 times the cable diameter
- 1 inch regardless of diameter
- 2 times the cable diameter
Correct answer: 4 times the cable diameter
TIA-568 requires a minimum static bend radius of 4 times the cable's outer diameter to prevent pair separation and return loss degradation.
Question 4: In a structured cabling system, what is the maximum distance allowed for horizontal cabling from the telecom room to the work area outlet?
- 90 meters (Correct answer)
- 100 meters
- 150 meters
- 50 meters
Correct answer: 90 meters
TIA-568 limits the permanent horizontal link to 90 meters, leaving 10 meters for patch cords and equipment cords in the channel.
Question 5: Which ANSI/TIA standard governs the installation of commercial building telecommunications cabling?
- ANSI/TIA-568 (Correct answer)
- ANSI/TIA-606
- ANSI/TIA-569
- ANSI/TIA-942
Correct answer: ANSI/TIA-568
ANSI/TIA-568 is the primary standard defining cabling components, transmission performance, and installation requirements for commercial buildings.
Question 6: What does the term 'alien crosstalk' (AXT) refer to in network cabling?
- Interference between adjacent cables in a bundle (Correct answer)
- Crosstalk between pairs within the same cable
- Signal interference from electrical conduit nearby
- Noise introduced by patch panel connections
Correct answer: Interference between adjacent cables in a bundle
Alien crosstalk (AXT) is electromagnetic interference that occurs between adjacent cables rather than between pairs within the same cable, which becomes critical in 10GbE Cat 6A installations.
Question 7: What color is used for horizontal cabling in the ANSI/TIA-606 administration standard?
- Blue (Correct answer)
- White
- Gray
- Orange
Correct answer: Blue
ANSI/TIA-606 assigns blue as the color designation for horizontal cabling between the telecom room and work area outlets.
C7 Network Cabling & Data Infrastructure 2
What is the maximum pulling tension allowed for a 4-pair Cat 6 UTP cable during installation?