Which plan type do you use to model a rating logic for a service credit that is based on a quantity and a validity period?

Question

Options

• APrice plan
• BAllowance plan
• CRefill plan
• DCharging plan

• A
  9% (2)
• B
  74% (17)
• C
  4% (1)
• D
  13% (3)

Explanation

Allowance plan (B) is correct because it is specifically designed to model granted quantities of service credit - such as free minutes or data - along with a validity period that governs when those credits expire. It captures both the how much (quantity) and how long (validity) dimensions of a credit grant, which is exactly what this scenario requires.

Price plan (A) defines the monetary charges applied to usage, not the granting of free service units, so it handles pricing logic rather than credit modeling. Refill plan (C) manages automatic periodic replenishment of balances (e.g., topping up a prepaid wallet on a schedule) but does not model the core rating logic for a credit tied to quantity and validity. Charging plan (D) groups and orchestrates other plan types to determine overall charges, making it a container/coordinator rather than the plan that directly models credit rating logic.

Memory tip: Think "A for Allowance = Allocation with an expiry" - when a customer is allowed a certain amount of something for a limited time, that's an Allowance plan.

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