SecurityX CAS-005 Exam Format: Questions, Time, and Pass/Fail Scoring Explained

Walking into an expert-level exam without knowing its structure is an unforced error. This article covers exactly how CompTIA SecurityX CAS-005 is built — the question count, the time, the question types, and the pass/fail scoring model that surprises candidates coming from other CompTIA exams.

For the full certification picture, start with the complete SecurityX guide. This piece is format only.

The core numbers

Here's the structure of the current CAS-005 (V5) exam:

• Up to 90 questions. The exact count varies by exam instance. Ninety is the maximum, not a guarantee.
• 165 minutes. Two hours and forty-five minutes to work through everything.
• Multiple-choice, multiple-select, and performance-based questions (PBQs). Multiple-select items ask you to pick more than one correct answer, which raises the difficulty because partial recognition isn't enough.
• Pass/fail only. There is no scaled score and no published passing percentage.

The pass/fail model, and why it matters

This is the detail that trips up candidates who've taken other CompTIA exams. Security+, PenTest+, and similar exams give you a scaled number. SecurityX doesn't. When you finish, you're told only that you passed or failed — no score, no per-domain breakdown.

Practically, that changes how you should think about readiness. You can't aim for "just enough" points, because there's no visible margin to game. The safe target is competence across all four domains rather than a gamble that strength in one area offsets weakness elsewhere. Since Security Engineering (31%) and Security Architecture (27%) together make up well over half the exam, weakness in either is very hard to hide. The full weighting is in the domains breakdown.

A useful benchmark from experienced candidates: consistently scoring in the mid-80s or higher on realistic practice tests is a reasonable signal you're ready, precisely because you can't see your real margin on exam day.

Performance-based questions

PBQs are hands-on simulations. Rather than picking an answer, you perform a task in a virtual environment — configuring controls, analyzing logs, interpreting output, or working through a security scenario. Expect a handful of them, and expect them to be time-consuming relative to multiple-choice items.

Because so much of SecurityX is scenario-based, the PBQs reward people who've actually done this work. You cannot cram them. The way to prepare is hands-on practice, which we cover in the PBQ and hands-on prep guide.

Pacing strategy for test day

A dependable approach:

1. Triage the PBQs first. Do the quick ones. If one is a deep time-sink, flag it and move on rather than burning fifteen minutes early.
2. Work the multiple-choice and multiple-select items steadily. Read multiple-select questions carefully — missing one required option means missing the whole item.
3. Return to flagged questions with your remaining time and a clearer head.
4. Leave nothing blank. There's no penalty for a wrong answer, so always commit to your best judgment.

Rehearsing under a 165-minute timer is what makes this routine. If your first full-length practice run overshoots the clock, that's data to act on, not a verdict.

Answering technique for scenario questions

SecurityX questions often present several technically defensible options and ask for the best one for a general enterprise situation. Two habits help: identify the core concept the question is really testing before reading the options, and when one choice is a broad category and another is a specific, fitting example, the specific one is usually right. Avoid overthinking fringe edge cases — the exam wants sound, general judgment.

Where format prep fits

Format familiarity is the last layer over real competence. Master the objectives, build hands-on reps, then rehearse full-length timed sessions so exam day holds no surprises. Our study plan sequences all of it.

Adaptive practice is the tool that tells you honestly where you stand before you book.

Gauge your readiness: CompTIA SecurityX CertMaster Practice adapts to your weak areas so you know where you stand. When you're consistently clearing your target, book with an official CAS-005 voucher, or choose the voucher-plus-retake bundle for a safety net. As an Authorized CompTIA Partner, all materials are official.

A note on voucher eligibility: Voucher eligibility depends on your exam testing location, per CompTIA policy. Testing in an emerging-market region? We don't sell those here — contact us.

FAQ

What's the passing score for SecurityX? There isn't a numeric one. The exam is pass/fail, and CompTIA doesn't publish the threshold.

Will I get 90 questions? Ninety is the maximum. Your specific exam may have fewer.

What are multiple-select questions? Items where more than one answer is correct and you must select all of them. Missing any required option means the item is wrong.

How many PBQs are there? Typically a handful. They're hands-on simulations and take longer than multiple-choice items, so triage them.

Is there a penalty for guessing? No. Always answer every question, even if it's your best estimate.

How do I know if I'm ready without a score? Use realistic practice tests. Consistently scoring in the mid-80s or higher is a common readiness benchmark, since you can't see your real margin on the day.