SALESFORCE-PD1 Process Automation And Logic Practice Question
A developer needs to invoke a long-running external web service callout from an existing scheduled Apex job that implements the Schedulable interface. What is the correct approach to implement this callout?
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
✓
Enquie a Queueable Apex class that implements Database.AllowsCallouts from within the Schedulable execute method.
Schedulable Apex cannot directly make synchronous callouts because the thread must wait for the network response. Developers must chain a Queueable class that implements Database.AllowsCallouts.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Mark the Schedulable execute method with the @future(callout=true) annotation.
Why it's wrong here
Incorrect. Methods defined as Schedulable cannot contain future annotations.
- ✗
Implement Database.AllowsCallouts directly in the Schedulable class and execute the callout inside the execute method.
Why it's wrong here
Incorrect. Schedulable classes cannot directly implement Database.AllowsCallouts to perform callouts synchronously.
- ✓
Enquie a Queueable Apex class that implements Database.AllowsCallouts from within the Schedulable execute method.
Why this is correct
Correct. Enqueueing a Queueable job that implements Database.AllowsCallouts allows callouts to be made successfully from scheduled contexts.
- ✗
Invoke the external web service using a standard synchronous SOQL statement.
Why it's wrong here
Incorrect. SOQL statements cannot execute external web service callouts.
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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.