Develop X++ Code MB-500 Practice Questions (Page 4)

Questions 16–20

1. 16foundation · easy

   In X++, which data type is used to store a whole number that can range from -2,147,483,648 to 2,147,483,647?

   • Aint
   • Breal
   • Cint64
   • Dstr
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2. 17application · medium

   A developer needs to create a reusable function that calculates a discount percentage based on a customer's total sales. The function will be used from multiple forms and classes. Where should the developer define this function to follow X++ best practices?

   • AIn a table method on the CustTable table.
   • BIn a form's data source method.
   • CIn the Global class as a global function.
   • DIn a new class as a static method.
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4. 18application · medium

   A developer is creating a class that will be used to validate customer data. The class has a method that takes a customer record and returns a boolean indicating whether the customer is valid. The method needs to be callable without creating an instance of the class. Which method declaration should the developer use?

   • Apublic static boolean validateCustomer(CustTable _custTable)
   • Bpublic boolean validateCustomer(CustTable _custTable)
   • Cpublic static client boolean validateCustomer(CustTable _custTable)
   • Dpublic boolean validateCustomer(CustTable _custTable) { ... }
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5. 19application · medium

   A developer is creating a class that will be used to calculate shipping costs. The class has a method that takes a weight (real) and a distance (real) and returns the cost (real). The method should be reusable and not require an instance of the class. Which method signature should the developer use?

   • Apublic real calculateShipping(real _weight, real _distance)
   • Bpublic static real calculateShipping(real _weight, real _distance)
   • Cpublic static void calculateShipping(real _weight, real _distance)
   • Dpublic real calculateShipping(real _weight, real _distance) { return 0; }
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6. 20expert · hard

   A developer is writing a method that processes a list of sales orders. The method needs to handle a variable number of order IDs and also needs to track the total number of orders processed. The developer is considering using a container or a List. The method will be called frequently and performance is critical. Which approach should the developer choose?

   • AUse an array and the array.lastIndex() method.
   • BUse a container and an integer counter.
   • CUse a List and the List.Count() method.
   • DUse a Set and the Set.Count() method.
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