H19-410_V1.0 · Question #123
The downstream rate of Huawei GPON products is ().
The correct answer is C. 2.5Gbps. GPON (Gigabit Passive Optical Network) follows the ITU-T G.984 standard, which defines a 2.5 Gbps downstream and 1.25 Gbps upstream rate - Huawei's GPON products comply with this standard, making C correct. Why the distractors are wrong: A (10 Gbps) - This is the downstream…
Question
The downstream rate of Huawei GPON products is ().
Options
- A10Gbps
- B5.0Gbps
- C2.5Gbps
- D1.25Gbps
How the community answered
(50 responses)- A2% (1)
- B10% (5)
- C82% (41)
- D6% (3)
Explanation
GPON (Gigabit Passive Optical Network) follows the ITU-T G.984 standard, which defines a 2.5 Gbps downstream and 1.25 Gbps upstream rate - Huawei's GPON products comply with this standard, making C correct.
Why the distractors are wrong:
- A (10 Gbps) - This is the downstream rate of XGS-PON (next-generation PON), not GPON.
- B (5.0 Gbps) - This rate does not correspond to any defined PON standard downstream speed.
- D (1.25 Gbps) - This is the upstream rate of GPON, not downstream; a common trick to catch students who mix up the two directions.
Memory tip: Think of GPON as "2.5 down, 1.25 up" - downstream is exactly double the upstream, and 2.5 Gbps ÷ 2 = 1.25 Gbps. If you see 1.25 Gbps in a GPON question, that's always the upload side.
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