In a GPON network, DBA has the following functions:

Question

Options

• AIncreases the upstream bandwidth of a PON port.
• BImproves the downstream bandwidth utilization of a PON port.
• CImproves the upstream bandwidth utilization of a PON port.
• DAdds more ONUs to a PON port.

• A
  5% (1)
• B
  10% (2)
• C
  80% (16)
• D
  5% (1)

Explanation

DBA (Dynamic Bandwidth Allocation): DBA is a mechanism in GPON networks that dynamically allocates upstream bandwidth among ONUs based on their traffic demands. Functions of DBA: Improves upstream bandwidth utilization: DBA ensures efficient use of the limited upstream bandwidth by allocating it dynamically to ONUs as needed. Does not increase total upstream bandwidth: The total upstream bandwidth of a PON port is fixed and determined by the hardware. DBA optimizes how this bandwidth is used. Does not affect downstream bandwidth: Downstream bandwidth is shared via broadcasting and is not managed by DBA. Does not add more ONUs: The number of ONUs supported by a PON port depends on hardware capacity, not DBA. DBA improves the efficiency of upstream bandwidth utilization by dynamically allocating Thus, the correct answer is C.

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