N10-005 · Question #584
Which of the following cables has the MOST twists per inch?
The correct answer is D. CAT6. Higher-category twisted-pair cables use more twists per inch to reduce crosstalk and electromagnetic interference, with CAT6 having the highest twist rate among the listed options.
Question
Which of the following cables has the MOST twists per inch?
Options
- ACAT3
- BCAT5
- CCAT5e
- DCAT6
How the community answered
(36 responses)- B3% (1)
- C3% (1)
- D94% (34)
Why each option
Higher-category twisted-pair cables use more twists per inch to reduce crosstalk and electromagnetic interference, with CAT6 having the highest twist rate among the listed options.
CAT3 has the fewest twists per inch of the listed options, supporting only up to 10 MHz and designed for voice-grade applications.
CAT5 has more twists than CAT3 but fewer than CAT5e and CAT6, supporting up to 100 MHz.
CAT5e has more twists than CAT5 with improved crosstalk specifications, but fewer twists per inch than CAT6.
CAT6 cable has more twists per inch than CAT3, CAT5, and CAT5e because the increased twist rate is necessary to support higher frequencies (up to 250 MHz) and reduce alien crosstalk (ANEXT) at 10 Gbps speeds over short distances.
Concept tested: Twisted-pair cable category twist rate comparison
Source: https://standards.ieee.org/ieee/802.3/6422/
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