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Exam RCDD-001 topic 12 question 6 discussion

Actual exam question from BICSI's RCDD-001

Question #: 6
Topic #: 12

[All RCDD-001 Questions]

What is the worst case acceptance value for attenuation when testing 2000 m (6562 ft) of 50/125 multimode fiber at a wavelength of 1300 nm when the fiber has 2 connector pairs and 3 splices?

A. 3.4 dB
B. 4.65 dB
C. 5.4 dB
D. 6.4 dB
E. 9.4 dB

Show Suggested Answer

Suggested Answer: C 🗳️

by LiONz5 at Nov. 28, 2022, 6:11 a.m.

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CUB90

7 months, 3 weeks ago

TDMM page 1-109 (183)

upvoted 1 times

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Maximum cable attenuation coefficient for 50/125 multimode fiber at a wavelength of 1300 nm is 1.5 dB/km. So (Maximum channel attenuation – [# connector pairs x 0.75 dB] – [# splices x 0.3 dB])=-1.5dB/km x 2km- 2 x 0.75dB - 3 x 0.3 dB = -5.4dB.

upvoted 2 times

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