Salesforce Certified Platform Developer II (Plat-Dev-301) Exam - Topic 3 Question 116 Discussion

Actual exam question for Salesforce's Salesforce Certified Platform Developer II (Plat-Dev-301) exam

Question #: 116
Topic #: 3

[All Salesforce Certified Platform Developer II (Plat-Dev-301) Questions]

A Visualforce page needs to make a callout to get billing 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?

AAn HTTP REST callout for the billing callout and a Continuation for the tax callout

BA Continuation for both the billing callout and the tax callout

CAn HTTP REST callout for both the billing callout and the tax callout

DA Continuation for the billing callout and an HTTP REST callout for the tax callout

Show Suggested Answer

Suggested Answer: B

Using Continuation for both callouts is the optimal solution when you have long-running callouts in a Visualforce page, as it allows the page to wait for a long-running process without tying up server resources. The Continuation pattern is specifically designed for scenarios where the request-response cycle could exceed the timeout limits. Reference: Visualforce Developer Guide -- Continuations

by Matilda at Jul 10, 2025, 12:29 AM

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Miss

2 months ago

I’m leaning towards D, it makes sense to mix the methods.

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Lindsey

2 months ago

Wait, can a Continuation really handle that long of a wait?

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Luisa

3 months ago

A is definitely the way to go, it keeps things organized!

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Earleen

3 months ago

I disagree, I think B is more efficient for both.

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Alaine

3 months ago

Option A seems like the best choice for handling both callouts.

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Mari

3 months ago

I vaguely remember that Continuations are better for user experience with long callouts, but I’m unsure if it applies to both in this case.

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Dierdre

4 months ago

I feel like both endpoints need to be handled efficiently, but I can't recall if using two different methods is allowed.

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Melita

4 months ago

I think we practiced a similar question where we used an HTTP callout for one and a Continuation for another. Maybe that's the right approach?

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Jacquelyne

4 months ago

I remember we discussed using Continuations for long-running callouts, but I'm not sure if it's necessary for both endpoints here.

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Yaeko

4 months ago

Based on the requirements, I think option B using Continuations for both callouts might be the most efficient way to handle this. That way, the user can see the information as soon as it's available without having to wait for both callouts to complete.

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Fausto

4 months ago

I'm a bit confused on the differences between HTTP REST callouts and Continuations. I'll need to review those concepts before deciding on the best approach.

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Mariann

5 months ago

Okay, let's see. The key here is that the billing information is needed for the tax information callout, and each callout could take up to 2 minutes. I'm thinking a Continuation might be the way to go to handle the potential delays.

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