ServiceNow CAD Practice Test: 200 Questions to Pass the Application Developer Exam (2026)

Why 200 Questions Matters for the CAD Exam

The Certified Application Developer (CAD) exam is the coding exam in the ServiceNow certification path. It tests whether you can actually build things on the platform — business rules, client scripts, script includes, REST integrations, and scoped applications.

The exam at a glance:

• 60 questions, 90 minutes
• ~70% passing score (42 correct)
• Multiple choice and multi-select
• Heavy on scripting scenarios
• $210 per attempt

Unlike the CSA (which tests admin knowledge), the CAD tests your ability to write and debug code. You need to understand GlideRecord, GlideAjax, business rule timing, client-side vs server-side execution, and REST API patterns.

200 practice questions means you can take over 3 full mock exams without repeating a single question.

What Our 200 Questions Cover

Our CAD question bank is distributed across all 7 exam domains:

## The 5 Question Types You'll Face

1. Straight Knowledge Questions (~30%)

"What does the 'Reverse if false' option do on a UI Policy?"

These test whether you know what platform features do. They're the easiest to study for.

2. Scenario-Based Questions (~25%)

"A developer creates a before business rule that sets a field value, but it's not being saved. What is the most likely cause?"

These give you a situation and ask you to troubleshoot. You need real platform experience for these — not just memorized definitions.

3. Multi-Select (Choose 2 or 3) (~20%)

"Which TWO authentication methods are supported by ServiceNow's inbound REST APIs?"

The real exam has a significant number of multi-select questions. Many practice tests skip these entirely. We don't.

4. Negative Questions (~15%)

"Which of the following is NOT a valid g_form method?"

These trip people up because you need to identify the wrong answer. They test the boundaries of your knowledge.

5. Code Analysis (~10%)

"A developer writes an onChange client script but it does not fire when the form loads. What should they add?"

These require you to read code or debug scenarios. The CAD exam has more of these than any other ServiceNow cert.

Domain Deep Dive: Where People Fail

Scripting & APIs — The Make-or-Break Domain

This domain tests your fundamental scripting knowledge. The most common mistakes:

• Confusing server-side and client-side APIs — g_form is client, GlideRecord is server. Mixing them up in the wrong context is the #1 error.
• Not knowing GlideRecord query patterns — addQuery vs addEncodedQuery, when to use get() vs query()
• GlideAjax callback patterns — The asynchronous nature trips up developers used to synchronous code

Key APIs to know cold:

• GlideRecord (query, insert, update, delete)
• GlideSystem (gs.info, gs.addInfoMessage, gs.getUser)
• GlideAjax (client-to-server communication)
• RESTMessageV2 (outbound REST calls)

Business Rules — Timing Is Everything

The exam loves testing business rule timing:

Critical rule: Never call current.update() in a before business rule. It causes double saves and recursion issues.

Client Scripts — Know Your Events

• onLoad — Form opens (query or insert)
• onChange — Field value changes (does NOT fire on load by default)
• onSubmit — Form submitted (return false to cancel)
• onCellEdit — List view cell editing

The distinction between these events shows up in almost every CAD exam.

REST Integration — HTTP Methods Matter

Know sysparm_fields, sysparm_query, sysparm_display_value, and sysparm_limit.

How to Use These 200 Questions

Strategy 1: Domain-by-Domain Study (Recommended)

Start with Scripting & APIs — it's the foundation

Move to Business Rules — build on scripting knowledge

Then Client Scripts and UI Policies

Script Includes — ties server-side concepts together

REST APIs — integration patterns

Finish with Application Development — the big picture

Strategy 2: Mock Exam Mode

Use our Timed Mock Exam to simulate real conditions:

• 60 random questions from all domains
• 90-minute timer
• No mid-exam feedback
• Domain-level score breakdown at the end

Strategy 3: Weak Area Focus

Take a mock exam first. Identify your weakest 2-3 domains. Spend focused study time on those domains, then retest.

CAD vs CSA: Key Differences

If you're deciding between the two, read our CSA vs CAD comparison.

Essential Study Resources

## Start Practicing Now Every question includes detailed explanations for both correct and incorrect answers. No brain dumps. No shortcut memorization. Real understanding that translates to passing the exam and doing the job.