Develop and test code - Quiz

Q: What is the command used to call the method named myMethod in the parent class from the child class?


Class myChildClass extends myParentBaseClass
{
Public void myMethod()
   {
_____________();
~~~Body of new code here~~~
   }
}

A. insert
B. return
C. void
D. super

Correct Option: D
Remarks:

Explanation:

Justification:

Insert is not a keyword, but a method on tables. It is not used to call an override method, but to insert data into a table .
Return is not a valid keyword used in inheritance scenarios.
The void keyword is used before a method. This indicates that a given method does not return a value. The void keyword is already used before myMethod().
Super() is the correct call to ensure that the method of the same name, “myMethod” is called.

Related Lesson: Class Inheritance

Q: You are to complete the code needed to insert a given record. Which will best complete this statement?


fmVehicle.______________

A. insertRecord();
B. insertAll();
C. insert();
D. insertnow():

Correct Option: C
Remarks:

Explanation:

Justification:

insertRecord is not a valid method call.
InsertAll is not a valid method call.
The insert method is the correct method to call to insert a record or records into the table that the method is being called on.
InsertNow is not a valid method call.

Related Lesson: Data Insert

Q: Which one of the following is not a relevant business concept to consider before and during an implementation of finance and operations apps?

A. Number of users
B. Number of transactions per month
C. Seasonality
D. Printing checks

Correct Option: D
Remarks:

Explanation:

A. Incorrect: The number of users is important for the environment sizing and licensing, and it can affect the performance of environments during the entire implementation. This is an important consideration.
B. Incorrect: The number of transactions per month is important for environment sizing and can affect the entire implementation scale.
C. Incorrect: Seasonality of your company is a large consideration when thinking about and planning for an implementation.
D. Correct: Printing checks is a detail of the implementation, but it is not a business concept to be considered that would change anything large about an implementation.

Q: We recommend that you use EDTs whenever possible in coding for finance and operations apps. Which of these statements is not a benefit of using EDTs?

A. EDTs are more easily compiled.
B. EDTs are reusable throughout the system.
C. The code is easy to read.
D. Properties can be inherited from parent EDTs.

Correct Option: A
Remarks:

Explanation:

Justification:

A. Correct: EDTs are compiled in the same way as any primitive data type.
B. Incorrect: EDTs are reusable throughout the system.
C. Incorrect: The code is easy to read for EDTs because they are referenced by name.
D. Incorrect: EDTs inherit properties from their parent and can be used in a hierarchical format.

Q: You want to update a record in your SampleTable table that contains the account number 1234 by using the update method. Before you call the update method, which clause is used at the beginning of this statement to locate the record sampleTable.AccountNum == “1234”?

A. where sampleTable.AccountNum == “1234”
B. locate sampleTable.AccountNum == “1234”
C. join sampleTable.AccountNum == “1234”
D. forUpdate sampleTable.AccountNum == “1234”

Correct Option: A
Remarks:

Explanation:

A. Correct: A where clause is used to specify a condition that the update method will test as it processes each row of the SampleTable table.
B. Incorrect: The locate clause doesn’t exist in coding for finance and operations apps.
C. Incorrect: A join clause links two tables on a column that is shared by both tables. It doesn’t locate a specific record.
D. Incorrect: The forUpdate clause is used to specify the table, not a record that you'll be updating.

Q: You are writing a query to retrieve the customers that are not associated with a sales order. What join between the Customer table and the Sales table should you use?

A. Join
B. Outer join
C. Exists join
D. NotExists join

Correct Option:
Remarks:

Explanation:

A. Incorrect: A join would return customer data and sales order data where the customer was associated with a sales order.
B. Incorrect: An outer join would return customer data and sales order data regardless of an association between them.
C. Incorrect: An exists join would return customer data for customers who are associated with a sales order.
D. Correct: A notExists join would return customer data for customers who are not associated with a sales order.

Related Topic: Performance Optimization

Q: A mechanism where one class acquires the properties of another class:

A. Polymorphism
B. Inheritance
C. Encapsulation
D. Abstraction

Correct Option: B
Remarks:

Explanation:

Inheritance

Q: How are dynamic arrays declared in X++?

A. By using the dynamic keyword followed by the array declaration.
B. By using the var keyword followed by the array declaration.
C. By using an empty array option, i.e., with only brackets ([]).
D. By using the flexible keyword followed by the array declaration.

Correct Option: C
Remarks:

Explanation:

By using an empty array option, i.e., with only brackets ( []).

Q: When one loop is used within another loop, it is said to be a _______________.

A. outer loop
B. inner loop
C. nested loop
D. none of these

Correct Option: C
Remarks:

Explanation:

nested loop

Certainly! Here is an example of a nested loop in Java:


public class NestedLoopExample {
    public static void main(String[] args) {
        // Outer loop
        for (int i = 1; i <= 3; i++) {
            System.out.println("Outer loop iteration: " + i);

            // Inner loop
            for (int j = 1; j <= 2; j++) {
                System.out.println("  Inner loop iteration: " + j);
            }
        }
    }
}

Output:


Outer loop iteration: 1
  Inner loop iteration: 1
  Inner loop iteration: 2
Outer loop iteration: 2
  Inner loop iteration: 1
  Inner loop iteration: 2
Outer loop iteration: 3
  Inner loop iteration: 1
  Inner loop iteration: 2

In this example, the outer loop runs 3 times, and for each iteration of the outer loop, the inner loop runs 2 times. This demonstrates how nested loops work in Java.

Q:
You are working on the company's Dynamics 365 finance and operations apps implementation. You need to extend the functionality of a base class method without modifying the base code.

You need to implement a solution that allows you to add custom logic before and after the base method execution.

Which approach should you use?

A. Implement Chain of Command (CoC) in an extension class
B. Use event handlers only
C. Create a new class with the same method
D. Modify the base class method directly

Correct Option: A
Remarks:

Explanation:

Chain of Command (CoC) allows you to wrap X++ code around methods that are defined in the base class. This allows you to add custom logic that will run before and/or after the standard code runs. Modifying the base class method directly is not recommended as it can lead to issues during updates. Creating a new class with the same method does not extend the base class functionality. Using event handlers only does not allow adding custom logic before and after the base method execution.

Class extension - Method wrapping and Chain of Command - Finance & Operations | Dynamics 365 | Microsoft Learn

Implement Chain of Command - Training | Microsoft Learn

Develop and test code - Quiz

What is the command used to call the method named myMethod in the parent class from the child class? Class myChildClass extends myParentBaseClass { Public void myMethod() { _____________(); ~~~Body of new code here~~~ } }

You are to complete the code needed to insert a given record. Which will best complete this statement? fmVehicle.______________

Which one of the following is not a relevant business concept to consider before and during an implementation of finance and operations apps?

We recommend that you use EDTs whenever possible in coding for finance and operations apps. Which of these statements is not a benefit of using EDTs?

You want to update a record in your SampleTable table that contains the account number 1234 by using the update method. Before you call the update method, which clause is used at the beginning of this statement to locate the record sampleTable.AccountNum == “1234”?

You are writing a query to retrieve the customers that are not associated with a sales order. What join between the Customer table and the Sales table should you use?

A mechanism where one class acquires the properties of another class:

How are dynamic arrays declared in X++?

When one loop is used within another loop, it is said to be a _______________.

What is the command used to call the method named myMethod in the parent class from the child class?

You are to complete the code needed to insert a given record. Which will best complete this statement?