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Reference: https://trailheadacademy.salesforce.com/certificate/exam-platform-dev1---Plat-Dev-201
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Salesforce Certified Platform Developer Sample Questions:
A developer has a Apex controller for a Visualforce page that takes an ID as a URL parameter.
How should the developer prevent a cross site scripting vulnerability?
- A. ApexPages.currentPage() .getParameters() .get('url_param')
- B. ApexPages.currentPage() .getParameters() .get('url_param') .escapeHtml4()
- C. String.escapeSingleQuotes(ApexPages.currentPage() .getParameters(). get('url_param'))
- D. String.ValueOf(ApexPages.currentPage() .getParameters() .get('url_param'))
Correct Answer: B 🗳️
A developer is asked to write helper methods that create test data for unit tests.
What should be changed in the Testvtils class so that its methods are only usable by unit test methods?
- A. Remove static from line 03.
- B. Add @IsTest above line 01.
- C. Change public to private on line 01.
- D. Add @IsTest above line 03,
Correct Answer: D 🗳️
A developer wrote Apex code that calls out to an external system. How should a developer write the test to provide test coverage?
- A. Write a class that extends WebserviceMock
- B. Write a class that extends HTTPCalloutMock.
- C. Write a class that implements the WebserviceMock interface.
- D. Write a class that implements the HTTPCalloutMock interface.
Correct Answer: D 🗳️
Developers at Universal Containers (UC) use version control to share their code changes, but they notice that when they deploy their code to different environments they often have failures.
They decide to set up Continuous Integration (CI).
What should the UC development team use to automatically run tests as part of their CI process?
- A. Force.com Toolkit
- B. Salesforce CLI
- C. Developer Console
- D. Visual Studio Code
Correct Answer: A 🗳️
A developer needs to make a custom Lightning Web Component available in the Salesforce Classic user interface.
Which approach can be used to accomplish this?
- A. Use the Lightning Out JavaScript library to embed the Lightning Web Component in a Visualforce page and add to the page layout.
- B. Use a Visualforce page with a custom controller to invoke the Lightning Web Component using a call to an Apex method.
- C. Embed the Lightning Web Component is a Visualforce Component and add directly to the page layout.
- D. Wrap the Lightning Web Component In an Aura Component and surface the Aura Component as a Visualforce tab.
Correct Answer: A 🗳️
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