Eliminating Wrong Answers

On the Claude Certified Architect exam, every question gives you 4 options and exactly 1 is correct. The other 3 are distractors — and they are not random. They are engineered to look reasonable to someone who half-knows the material.

Here is the single most useful insight for this lesson: distractors are very often well-known anti-patterns dressed up as solutions. If you can recognize the anti-pattern catalog on sight, you can eliminate 2-3 options before you even finish reading them.

Elimination is leverage. With no penalty for guessing, killing two wrong answers turns a 25% guess into a 50% one — and usually leaves the correct answer obvious.

Before you can eliminate, you need a list of red flags memorized cold. These are the recurring wrong answers across all 8 exam scenarios:

• Parsing text for completion signals ("stop when the reply contains 'done'")
• Arbitrary iteration caps as the primary stop mechanism
• Minimal/ambiguous tool descriptions or too many tools per agent
• Generic error statuses ("Operation failed")
• Enforcing critical business rules with prompts alone
• Single-pass multi-file review and same-session self-review
• Batch API for blocking/time-sensitive checks
• Sentiment/confidence-based escalation
• Requiring possibly-absent schema fields
• Silent error suppression and aggregate-only accuracy metrics

When an option matches one of these, it is almost certainly the wrong answer. Treat the list as a tripwire.