A developer needs to add a new method to an existing class that is part of a model that cannot be modified. The new method should be available to all code that uses the original class. Which approach should the developer use?

Modify the original class to add the method.

Create a new class that inherits from the original class and add the method there.

Use a class extension with the ExtensionOf attribute to add the method to the original class.

Create a static helper class and call it from all places that use the original class.

A developer is working on a customization that must run logic before a purchase order is deleted. The standard PurchTableType class has a delete method. The developer wants to avoid modifying the standard class. What should the developer do?

Create a new class that duplicates the delete logic and call it from the form.

Use a PreHandlerFor event handler on the delete method of PurchTableType.

Modify the delete method in PurchTableType to call a new method.

Create a new class that extends PurchTableType and override the delete method.

What is the purpose of creating a class extension in Dynamics 365 Finance and Operations?

To delete the original class from the AOT

To replace the original class with a new implementation

To create a new class that inherits from the original class

To add new methods or modify existing ones without changing the original class code

Microsoft Certified:Dynamics 365 Finance and Operations Apps Developer Associate

Domain 3Objective 3

Create Classes and Extend AOT Elements MB-500 Practice Questions (Page 6)

Part of the Design and develop AOT elements domain, which accounts for 15–20% of the MB-500 exam. Microsoft does not publish an official question count, but from its 100-minute exam (~40–65 total, ~6–13 in this domain), expect 2–4 from this objective — we provide 30 practice questions to prepare you well beyond it. (estimate)

30questions here

6free pages

5concepts

15–20%of the exam

Questions 26–30

26application · medium
A developer needs to add a new method to an existing class that is part of a model that cannot be modified. The new method should be available to all code that uses the original class. Which approach should the developer use?
Select an answer first
27application · medium
A developer is working on a customization that must run logic before a purchase order is deleted. The standard PurchTableType class has a delete method. The developer wants to avoid modifying the standard class. What should the developer do?
Select an answer first
28foundation · easy
What is the purpose of creating a class extension in Dynamics 365 Finance and Operations?
Select an answer first
29foundation · easy
When you create a new class in the AOT, what is the default access modifier applied to the class?
Select an answer first
30application · medium
A developer is creating a class that will be called from a menu item. The class method must be marked as an entry point to enable security checks. Which attribute should the developer apply to the method?
Select an answer first

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Create Classes and Extend AOT Elements MB-500 Practice Questions (Page 6)

Questions 26–30

A developer needs to add a new method to an existing class that is part of a model that cannot be modified. The new method should be available to all code that uses the original class. Which approach should the developer use?

A developer is working on a customization that must run logic before a purchase order is deleted. The standard PurchTableType class has a delete method. The developer wants to avoid modifying the standard class. What should the developer do?

What is the purpose of creating a class extension in Dynamics 365 Finance and Operations?

When you create a new class in the AOT, what is the default access modifier applied to the class?

A developer is creating a class that will be called from a menu item. The class method must be marked as an entry point to enable security checks. Which attribute should the developer apply to the method?

Keep studying — Design and develop AOT elements