H35-210_V2.5 · Question #328
Is the following description correct? In the EPON network, the gemport is used to carry the service flow.
The correct answer is B. False. Option B (False) is correct because GEMport is a concept that belongs to GPON (Gigabit Passive Optical Network), not EPON (Ethernet Passive Optical Network). In EPON, service flows are identified and carried using the LLID (Logical Link Identifier), which is assigned to each…
Question
Is the following description correct? In the EPON network, the gemport is used to carry the service flow.
Options
- ATrue
- BFalse
How the community answered
(23 responses)- A26% (6)
- B74% (17)
Explanation
Option B (False) is correct because GEMport is a concept that belongs to GPON (Gigabit Passive Optical Network), not EPON (Ethernet Passive Optical Network). In EPON, service flows are identified and carried using the LLID (Logical Link Identifier), which is assigned to each ONU to distinguish logical links over the shared optical medium.
Why A is wrong: The statement incorrectly attributes a GPON-specific mechanism to EPON. GEM (GPON Encapsulation Method) ports are the GPON equivalent - they multiplex multiple service flows within a T-CONT - but this architecture does not exist in EPON.
Memory tip: Match the acronyms - GEMport goes with GPON; EPON uses LLID (think "Ethernet Link ID"). If you see "GEMport," think GPON automatically. Any question mixing GEMport into an EPON context is describing the wrong standard.
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