If the ONT is added on the GPON port by confirmation, what functions need to be enabled on the OLT?

Question

Options

• AGPON line encryption
• BPON port FEC function
• CONT auto-discovery
• DPOE function

• A
  3% (1)
• B
  6% (2)
• C
  83% (30)
• D
  8% (3)

Explanation

ONT auto-discovery (C) must be enabled because "adding by confirmation" is a two-step process: the OLT first discovers unknown ONTs that connect to its GPON port, then an administrator confirms (approves) each one. Without auto-discovery enabled, the OLT will never detect the ONT in the first place, making confirmation impossible.

Why the distractors are wrong:

• A (GPON line encryption) is an optional security feature for encrypting traffic on the PON link - useful, but unrelated to the ONT registration process.
• B (PON port FEC) stands for Forward Error Correction, which improves signal integrity on long or noisy fiber runs - again, a transmission quality feature, not a discovery/registration function.
• D (POE) means Power over Ethernet, which delivers electrical power through network cables - completely unrelated to GPON or optical network terminals.

Memory tip: Think of it as a doorbell analogy - auto-discovery is the doorbell that lets the OLT hear when an ONT knocks; "confirmation" is you deciding whether to let it in. You can't confirm what you can't hear, so discovery always comes first.

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