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Exam 4A0-107 topic 1 question 37 discussion

Actual exam question from Alcatel-Lucent's 4A0-107
Question #: 37
Topic #: 1
[All 4A0-107 Questions]

In the context of hierarchical scheduling, a scheduler is configured with a CIR weight of 0. Which of the following statements is TRUE?

  • A. The scheduler will be allocated its "within CIR" bandwidth before all other children at the same level have received their "within CIR" bandwidth.
  • B. The scheduler will be allocated its "within CIR" bandwidth after all other children at the same level have received their "within CIR" bandwidth.
  • C. The scheduler will be allocated its "within CIR" bandwidth after all other children at all levels have received their "within CIR" bandwidth.
  • D. The scheduler will not be allocated its "within CIR" bandwidth.
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Suggested Answer: D 🗳️

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dydzah
2 months, 1 week ago
Selected Answer: B
The range of values of the CIR-level parameter is 0 to 8. The default CIR-level is 0 (undefined). When the level is 0, it will not receive any bandwidth in the within-CIR pass. A higher CIR-level is exhaustively serviced over lower CIR-levels. The range of the level parameter is from 1 to 8, with a default level of one. A higher level is exhaustively serviced over lower levels. The CIR weight and/or weight can be assigned a value of 0. This means that the scheduler or queue will only receive BW after all the non-zero children at that level. An orphaned queue may exist on a SAP with hierarchical scheduling. This may occur due to an incomplete or erroneous policy configuration. Orphaned queues will be assigned a CIR-level of 0, a CIR weight of 0, a level of 1, and a weight of 0. This is the lowest possible scheduling priority.
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kolto
1 year, 7 months ago
b is correct
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