SALESFORCE-PD1 Testing Debugging And Deployment Practice Question
A developer is writing a test method that performs a callout to an external REST service. Which interface must the developer implement to provide mock responses during the unit test execution?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
HttpCalloutMock
HttpCalloutMock is the interface implemented to supply a mock HTTP response during test context when callouts are made.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
InstallHandler
Why it's wrong here
InstallHandler handles post-install logic for managed packages.
- ✗
Schedulable
Why it's wrong here
Schedulable allows classes to be scheduled to run at specific intervals.
- ✗
Database.Batchable
Why it's wrong here
Database.Batchable is used for running large batches of records asynchronously.
- ✓
HttpCalloutMock
Why this is correct
HttpCalloutMock must be implemented to return fake responses since actual callouts are not permitted in test methods.
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JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed August 2026 · checked against the official Salesforce exam blueprint
This SALESFORCE-PD1 practice question is part of Courseiva's free Salesforce certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the SALESFORCE-PD1 exam.