Take My CDSP Exam

What the CDSP Actually Tests

CDSP — Certified Data Science Practitioner — is CertNexus's practitioner-level data-science credential. Per the official exam details, it validates collecting, preparing, analyzing, modeling, and interpreting data to extract insights and support data-driven decision-making.

The exam is 90 multiple-choice and multiple-response items in 120 minutes, with 75 items counting toward the final score — the remainder are unscored pilots you cannot identify, so every item gets full effort. The clock includes 5 minutes for the Candidate Agreement and 5 for the Pearson VUE tutorial.

This is an end-to-end workflow paper: sourcing and cleaning data, choosing analytical techniques, building predictive models, and communicating insights — graded the way an analytics team actually works, not as a statistics quiz.

OnVUE at Home or a Test Center: Same Exam, Your Room or Theirs

CertNexus exams deliver through Pearson VUE - at a test center or via OnVUE online proctoring - and Pearson's dedicated CertNexus OnVUE page carries the scheduling login and the full requirements list for the at-home route.

The technology minimums: Windows 10 or macOS 14 or higher, a working webcam, microphone, and speaker with no headphones or headsets, one display only because multi-monitor setups are not permitted, a stable connection of at least 6 Mbps download and 2 Mbps upload, and every application except OnVUE closed. Prohibited: virtual machines and beta operating systems, phones, tablets, styluses, watches, smart devices with recording or AI features, secondary or touchscreen displays, and VPN, corporate, or public networks.

CertNexus's page also publishes the strictest desk rules in the OnVUE family: the desk completely empty except for the testing computer, pre-approved comfort aids, and a beverage in an unmarked container - with electronics, books, notes, paper, pens, writing tools, tissue boxes, makeup, handkerchiefs, food, smoking products, personal accessories, and weapons all named for removal. The room must be quiet, whiteboards cleared, you alone at all times, and no one else may view your screen even from a distance; bathrooms are on the prohibited-spaces list.

The page names zero pre-approved allowances for this program - unlike Salesforce's digital whiteboard - and points to the CertNexus candidate handbook for the complete testing rules. An unmet minimum on exam day can mean immediate exam cancellation and forfeiture of the exam fee.

What the CDSP Costs Before Any Service Conversation

The exam voucher is $367.50 at the CertNexus store. Vouchers are non-refundable, non-transferable, and non-exchangeable, and expire 18 months from purchase — so buy against a real testing window, not a vague intention.

Passing is not the end of the spend. CertNexus certifications run on a three-year term: you recertify by retaking the most recent exam version before expiry, or by earning 90 continuing-education credits (CECs) within the three years — CDSP is one of the credentials currently eligible for the CEC route, with a $150 one-time enrollment for the full period.

There is no published free retake. A failed sitting means buying another voucher at full price, which is why the first attempt deserves a prepared one.

Where CDSP Attempts Actually Fail

Three patterns account for most failed first attempts we see.

The scoring shape is the quiet failure point: the DSP-210 paper presents 90 items but only 75 count toward the final score - fifteen unscored items you cannot identify in the room - and the passing score is 72% or 69% depending on the statistically equated form. CertNexus publishes a course outline, not scored domain weightings, so any site quoting exact CDSP domain percentages is guessing. The voucher adds the second trap: $367.50 (sku CNX0020V), non-refundable, non-transferable, and expiring 18 months from purchase.

The logistics pattern bites hardest on CertNexus sittings because the desk and room rules are published in full: tissue boxes, makeup, handkerchiefs, and glasses cases are named removals, and a second person visible on camera - even just viewing the screen from a distance - violates the published room requirements.

The logistics pattern bites hardest on CertNexus sittings because the desk and room rules are published in full: tissue boxes, makeup, handkerchiefs, and glasses cases are named removals, and a second person visible on camera - even just viewing the screen from a distance - violates the published room requirements.

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How Take-My-CDSP Support Actually Works

What You Get

Is This Safe, and How Discretion Works

Discretion is operational, not theatrical. Communication stays on your chosen channel, nothing posts publicly, and your CertNexus and Pearson VUE details are used for your sitting and nothing else.

If something about your situation makes the sitting a bad risk — a voucher close to its 18-month expiry, ID that will not pass verification, an unusable home setup — we say so at intake, not after.

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