Platform-Developer-II Free Practice Test

- (Exam Topic 1)
A Visualforce page needs to make a callout to get biding information and tax information from two different REST endpoints. The information needs to be Displayed to the user at the same time and the return value of the billing information contains the input for the tax information callout. Each endpoint might take up to two minutes to process.
How should a developer implement the callouts?

1. A. A Continuation for both the billing callout and the tax callout
2. B. An HTTP REST call out for both the billing callout and the tax callout
3. C. An HTTP REST callout for the billing callout and a Continuation for the tax callout
4. D. A Continuation for the billing callout and an HTTP REST callout for the tax callout

Correct Answer: A

- (Exam Topic 1)
A developer must perform a complex SOQL query that joins two objects in a Lightning component. how can the Lightning component execute the query?

1. A. Use the SaJesforce Streaming API to perform the SOQL query.
2. B. Create a Process Builder to execute the query and invoke from the Lightning component.
3. C. Invoke an Apex dass with the method annotated as ©AiraEnabled to perform the query.
4. D. Write the query in a custom Lightning web component wrapper and invoke from the Lightning component.

Correct Answer: D

- (Exam Topic 3)
Consider the following code snippet:

A developer needs to built an interactive Aura component that responds to the user's input by hiding or
showing sections according the user preferences.
What are two best practices the developer can implement to hide or show the powerVserView and s-rar.daraVserView inner components, based on the value of the attribute isPowexUser?
Choose 2 answers
A)

B)

C)

D)

1. A. Option A
2. B. Option B
3. C. Option C
4. D. Option D

Correct Answer: B

- (Exam Topic 2)
A company decides that every time an Opportunity is created, they want to create a follow up Task and assign it to the Opportunity Owner.
What should a developer use to implement the requirements?

1. A. A Process Builder on Opportunity
2. B. A trigger on Task
3. C. A trigger on Opportunity
4. D. A Process Builder on Task

Correct Answer: A

- (Exam Topic 3)
A lead developer is creating tests for a Lightning web component. The component re-renders when a property called bypassSelection. changes its value.
What should the developer use to the test that the component re-renders successfully when the property changes?

1. A. Promis
2. B. resolve ( )
3. C. dispatchEvent (new CustomEvent (‘ bypassSelection’))
4. D. Windows, Setinterval ( )
5. E. Windows, set State ( )

Correct Answer: C