DBA dynamically allocates upstream bandwidth among ONUs based on their traffic demands. Different DBA types are used for different service requirements.
DBA Types :
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.
Why B?
Type 3 is specifically designed for AR services, providing both guaranteed and flexible bandwidth allocation.
Thus, the correct answer is B .
References:
HCIA Huawei ACCESS Official Documentation , Chapter: GPON DBA Mechanism.
ITU-T G.984.x Standards for GPON .
Contribute your Thoughts:
Chosen Answer:
This is a voting comment (?). You can switch to a simple comment. It is better to Upvote an existing comment if you don't have anything to add.
Submit