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Salesforce Platform Developer Exam Practice Questions, practice question pack
SALESFORCE · Platform Developer

Salesforce Platform Developer Exam Practice Questions

99% pass rateUpdated 1 Nov 2026439 questions2 PDFs, instant download
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(16 customer reviews)

US$39

Every question with the correct answer and why the other options are wrong.

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99% pass rate. Pass or your money back.Fail the exam after using this pack and we refund it, or swap it for any other pack. How the guarantee works
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Three of the 439 questions in this pack

Question 1

Which statement results in an Apex compiler error?

  1. Map<Id,Leas> lmap = new Map<Id,Lead>([Select ID from Lead Limit 8]);
  2. Date d1 = Date.Today(), d2 = Date.ValueOf('2018-01-01');
  3. Integer a=5, b=6, c, d = 7;
  4. List<string> s = List<string>{'a','b','c');
Show answer and explanation

Correct answer: D. List<string> s = List<string>{'a','b','c');

A list literal has to be constructed with the new keyword and closed with the same kind of bracket it opened with. Option D writes List<string> s = List<string>{'a','b','c'); which omits new and closes a brace with a parenthesis, so the compiler rejects it before the code ever runs. The other three lines are legal Apex: multiple variables of one type can be declared and initialised in a single statement, and a declared variable may be left unassigned.

Why the other options are wrong

  • A. This compiles. Leas is read as an unresolved type name only if no such type exists, and the exam prints this line as Map<Id, Lead>, so the statement is a valid map construction from a SOQL result.
  • B. Declaring two Date variables in one statement and initialising them with Date.today() and Date.valueOf() is valid Apex.
  • C. Apex allows several variables of the same type in one declaration, and leaving c uninitialised is legal because it simply defaults to null.

Question 2

What are two benefits of the Lightning Component framework? (Choose two.)

  1. It simplifies complexity when building pages, but not applications.
  2. It provides an event-driven architecture for better decoupling between components.
  3. It promotes faster development using out-of-box components that are suitable for desktop and mobile devices.
  4. It allows faster PDF generation with Lightning components.
Show answer and explanation

Correct answer: B, C. It provides an event-driven architecture for better decoupling between components; It promotes faster development using out-of-box components that are suitable for desktop and mobile devices.

The framework is built on an event driven model: components fire and handle events rather than calling into each other directly, which keeps them loosely coupled and independently reusable. It also ships a large set of out-of-box base components that already render correctly on desktop and mobile, so developers assemble screens from tested building blocks instead of writing markup from scratch. Those two properties are the standard stated benefits.

Why the other options are wrong

  • A. The framework reduces complexity for applications as well as pages, so the qualifier makes this false.
  • D. PDF generation is a Visualforce capability through renderAs="pdf". Lightning components do not provide it, let alone faster.

Question 3

A method is passed a list of generic sObjects as a parameter. What should the developer do to determine which object type (Account, Lead, or Contact, for example) to cast each sObject?

  1. Use the first three characters of the sObject ID to determine the sObject type.
  2. Use the getSObjectType method on each generic sObject to retrieve the sObject token.
  3. Use the getSObjectName method on the sObject class to get the sObject name.
  4. Use a try-catch construct to cast the sObject into one of the three sObject types.
Show answer and explanation

Correct answer: B. Use the getSObjectType method on each generic sObject to retrieve the sObject token.

Every sObject instance exposes getSObjectType(), which returns the Schema.SObjectType token for that record's object. Calling it on each generic sObject tells the code exactly what it is holding, and the token can then be compared against Account.SObjectType, Lead.SObjectType and so on, or fed to newSObject() to cast. It is the supported, describe-driven way to branch on object type.

Why the other options are wrong

  • A. Key prefixes do identify an object, but reading the first three characters of an ID means hardcoding prefixes or querying EntityDefinition to map them. It is indirect and brittle next to a single method call.
  • C. There is no getSObjectName method on the sObject class. The describe result exposes getName(), reached through getSObjectType().getDescribe().
  • D. Casting inside a try-catch treats a type check as an exception handler. It works only by failing repeatedly and is not how type is determined.

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How much of the Salesforce Platform Developer bank is free?

439 questions in the bank

Each step includes the one before, so buying only adds new questions.

  • You are here10questionsFree sampleThree on this page, all ten as a PDF.Download the sample
  • 10424% of the bankPractice pageFree on the site, every answer explained.Go to the practice page
  • 219the first half of the packHalf PackFree by email, as one PDF, every answer explained.Get the Half Pack
  • 439100%, the whole bankFull pack, US$39Plus the questions-only PDF, monthly updates, refund if you fail.Get the full pack
ABOUT THIS PACK

What’s in the Salesforce Platform Developer pack

  • 439 questions mapped to the Platform Developer exam objectives
  • Answers and explanations for every question, including the wrong options
  • A questions-only PDF for timed practice runs
  • Instant delivery by email the moment you check out
  • Free monthly updates for as long as the exam is live
  • Pass or your money back

A failed Platform Developer attempt costs another US$200, plus the time it takes to prepare again. This pack is US$39, paid once, and refunded if you fail.

What makes the Platform Developer hard

Developers from other stacks often walk into Platform Developer expecting a coding exam and find a platform exam instead. Apex syntax is the easy part.

What decides it: governor limits and how to bulkify around them, the order of execution when a record saves, trigger patterns that avoid recursion, and knowing when the platform wants declarative automation instead of code at all. Add SOQL versus SOSL, the 75% test coverage rule and what actually counts toward it, and Lightning Web Component fundamentals, and the exam becomes a test of how Salesforce thinks, not how well you write loops.

60 scored questions plus 5 unscored in 105 minutes, with a 68% pass mark. This pack covers the exact limit, trigger and order-of-execution scenarios that fill the paper.

About the exam

Platform Developer validates building custom applications on the Salesforce Platform: Apex, SOQL, Lightning Web Components, and declarative-versus-programmatic design decisions. There are no prerequisites. It is maintained through free Trailhead maintenance modules.

Questions before you buy

How quickly do I receive it?

Straight away. The full PDF and a questions-only copy are emailed to you the moment your payment goes through, and the same links are on your order page.

Are updates included?

Yes. The pack is updated every month for as long as the exam is live, and updates are free for everyone who has bought it.

What if I fail the exam?

We refund the pack, or swap it for any other pack if you would rather keep studying. Sit the exam 7 to 30 days after buying, then send your official score report within 7 days of the exam date, as set out in the refund policy.

What is your pass rate?

99% of customers who prepare with a CertStash pack pass. If you do not, we refund the pack, or swap it for another pack.

Can I share it with colleagues?

Each purchase is licensed to one person. For a team, school or training organisation, email support@certstash.com for a licence that fits.

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