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Exam HPE6-A47 topic 1 question 31 discussion

Actual exam question from HP's HPE6-A47

Question #: 31
Topic #: 1

[All HPE6-A47 Questions]

Refer to the exhibit.

An architect determines that 80 Gbps bandwidth is required for the link aggregation between the Building 1aggregation layer and Building 2. Which transceivers should the architect recommend for each pair of switches?

A. two QSPF+ BiDi
B. two QSPF+ MPO
C. eight SPF+ LR
D. eight SFP+ SR

Show Suggested Answer

Suggested Answer: B 🗳️

by ismoqi at Oct. 20, 2020, 9:43 a.m.

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Johno

2 years, 4 months ago

OM4 with QSFP+ will reach 150m so the distance is fine however with only 6 strands you can't use MPO as this requires 4 Tx and 4 Rx strands so not enough with a 6 strand cable - must be Answer A

upvoted 2 times

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Mrvn

2 years, 11 months ago

A. two QSPF+ BiDi

upvoted 1 times

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Hugh_Jazz

3 years, 5 months ago

Hmmm, I think A. You need 80 Gbps, MPO requires a minimum of 8 strands of fiber, we only have 6. A provides us two BiDi, giving us the 80Gbps required with existing OM4 MMF.

upvoted 4 times

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ismoqi

3 years, 6 months ago

Correct answer should be B. Because there are only 6 strands, MPO use 12 strands