Which type of dynamic bandwidth assignment (DBA) is usually used for configuring AR services?

Question

Options

• AType 1
• BType 3
• CType 4
• DType 5

• A
  3% (1)
• B
  82% (27)
• C
  9% (3)
• D
  6% (2)

Explanation

Dynamic Bandwidth Assignment (DBA): DBA dynamically allocates upstream bandwidth among ONUs based on their traffic demands. Different DBA types are used for different service requirements. Type 1: Fixed bandwidth allocation, suitable for constant bit-rate services like voice. Type 3: Mixed allocation, combining fixed and assured bandwidth. It is commonly used for AR (Assured Rate) services, which require guaranteed minimum bandwidth with flexibility for additional bandwidth. Type 4: Best-effort allocation, suitable for non-critical services like web browsing. Type 3 is specifically designed for AR services, providing both guaranteed and flexible bandwidth Thus, the correct answer is B.

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