You can see it againUnder pressure people bring back shapes and positions long after the wording has gone.
Picture superiority · Shepard 1967, Standing 1973
DELL TECHNOLOGIESDell Data Science Optimize
The Dell Data Science Optimize certification validates your ability to apply advanced analytical methods, work with Hadoop and NoSQL ecosystems, and use natural language processing, social network analysis, and data visualization to solve real business challenges. Designed for data scientists who want to evolve beyond foundations, this credential demonstrates you can identify, analyze, and communicate data-driven conclusions that drive decisions across domains.
Exam formatProctored exam
DeliveryPearson VUE
Free questions469
Content last reviewed 30 July 2026 · Up to date
The certification
What Dell Data Science Optimize proves, and what it asks of you
What this certification covers, who it is written for, and what the exam itself looks like on the day.
6domains
19objectives
126concepts
What it is
What this certification is
What it validates, who it is written for, and the experience it assumes.
About this certification
The Dell Data Science Optimize certification builds on the skills developed in Data Science Foundations, helping aspiring data scientists expand their expertise into advanced analytical methods and big data technologies. The certification covers Hadoop and its ecosystem (including Pig, Hive, HBase, and Spark), natural language processing, social network analysis, and advanced data visualization techniques.
Earning this credential proves you can apply these methods to identify patterns, draw conclusions, and communicate actionable recommendations that solve business challenges across many domains. It is part of the Dell Proven Professional program, which recognizes industry-relevant skills in IT infrastructure, cloud, and cybersecurity.
Who it’s for
This certification is designed for data scientists and aspiring data scientists who want to advance their skills beyond foundational concepts. It is particularly suited for professionals working with big data technologies, advanced analytics, and machine learning in enterprise environments. Typical roles include product specialists, solution architects, and technical consultants who need to analyze complex data sets and communicate insights to stakeholders. The certification is ideal for those who work with Hadoop, NoSQL databases, natural language processing, and social network analysis.
Recommended experience
Dell recommends that candidates have foundational data science knowledge and skills before pursuing this certification. Completion of the Data Science Foundations certification or equivalent knowledge; Familiarity with Hadoop and its ecosystem (Pig, Hive, HBase, Spark); Understanding of natural language processing concepts; Experience with data visualization techniques
The syllabus
What you’ll learn
Every domain and objective Dell Technologies measures, with the weight they carry on the exam.
The official Dell Technologies exam outline · checked 30 July 2026 · See the source
MapReduce
- MapReduce framework and its implementation in Hadoop
- Hadoop Distributed File System (HDFS)
- Yet Another Resource Negotiator (YARN)
Hadoop Ecosystem and NoSQL
- Pig
- Hive
- NoSQL
- HBase
- Spark
Natural Language Processing (NLP)
- NLP and the four main categories of ambiguity
- Text Preprocessing
- Language Modeling
Social Network Analysis (SNA)
- SNA and Graph Theory
- Communities
- Network Problems and SNA Tools
Data Science Theory and Methods
- Simulation
- Random Forests
- Multinomial Logistic Regression and Maximum Entropy
Data Visualization
- Perception and Visualization
- Visualization of Multivariate Data
On the day
The exam itself
Everything Dell Technologies publishes about sitting it, and nothing we inferred.
Prerequisites
Completion of Data Science Foundations certification or equivalent knowledge is recommended.
CertificationDell Data Science Optimize
Exam formatProctored exam
DeliveryPearson VUE
LanguagesEnglish, French
After you pass
Where this credential goes next
The path Dell Technologies lays out, how the credential is kept, and where to book.
Step-by-step path to Dell Data Science Optimize
PrerequisiteCompletion of Data Science Foundations certification or equivalent knowledge is recommended.
Credential earnedDell Data Science Optimize Certification Lifecycle status
This certification is currently active and available. Dell Technologies maintains this certification to validate current skills and industry relevance.
Exam status: ActiveMaintained by Dell Technologies
Exam registration
Register for the exam through Pearson VUE, Dell Technologies’s authorized testing partner.
Schedule your examVisit the official Dell Technologies certification page for exam policies and requirements.
View the official pageYour coach
And when you are serious, your coach Pip takes over
Your coach in the app reads what you have answered with the book closed and tells you one thing to do tonight. It will not count an answer you gave with the page open, and it will tell you when you are not ready.
See how the coach worksBefore you book
Questions people ask
How does this exam relate to the Data Science Foundations certification?
The Data Science Optimize certification is designed to build on the skills developed in Data Science Foundations. While not a mandatory prerequisite, completing the Foundations certification is recommended to ensure you have the foundational knowledge needed for the advanced topics covered in this exam.
Is there a hands-on or lab component in the exam?
The official exam description does not mention a hands-on or lab component. The exam is a proctored skills certification exam administered through Pearson VUE testing centers or OnVUE online proctoring.
What is the retake policy if I fail the exam?
If you do not pass on your first attempt, you must wait 7 days before retaking. After a second failed attempt, you must wait at least 14 days between each additional attempt. If you need to retake an exam you have already passed to fulfill a certification track requirement, you may do so after 3 months.
How soon will I receive my exam results?
Exams are computer scored immediately upon completion, and you will receive a provisional score report right away. The final score is transmitted to your CertTracker account within 72 hours after statistical analysis is conducted.
What job roles does this certification map to?
The target audience includes Product Specialists, Solution Architects, and Technical Consultants who work with data science and advanced analytics in enterprise environments.
Can I take the exam online?
Yes, the exam is available via Pearson VUE's OnVUE online proctoring as well as at physical test centers. Both options require a valid government-issued photo ID and adherence to the candidate agreement.
Are there any testing accommodations available?
Yes, Dell Technologies and Pearson VUE provide exam accommodations for candidates with disabilities, comfort aids, and English as a Second Language (ESL) support. Requests must be made in advance through the Pearson VUE accommodations process.
Information freshness · Content last reviewed on 2026-07-30 Up to date
Practice free questions 469 questions, free, no account needed.
The curriculum
The whole exam, mapped and written
Every domain, every objective, and every concept Dell Technologies measures — each one written out.
6domains
19objectives
126concepts
103free pages
The domains, and what sits inside them
Every objective below is a page you can open and practise now, without an account.
The official Dell Technologies exam outline · checked 30 July 2026 · See the source
1MapReduce73 questions
2Hadoop Ecosystem and NoSQL126 questions
3Natural Language Processing (NLP)98 questions
4Social Network Analysis (SNA)54 questions
5Data Science Theory and Methods63 questions
6Data Visualization55 questions
Not a table of contents
Every line on this map already opens
In front of every objective the practice pages are already there, free and without an account. This is one objective, opened.
MapReduce framework and its implementation in Hadoop5 pagesOpen →
Free in front of it
22 questions on this objective, five to a page. Every range above is a real page, open now, with no account.
Reading the map is not the same as knowing the ground
The curriculum tells you what is on the exam. Proving you know it is a different job — and it is the one the closed-book run does.
Free questions
469 questions. No account, no card.
The whole bank is open. 5 questions to a page, every answer explained, and a discussion thread on each one.
469questions
103pages
19objectives
Freealways
Browse by domain
Every objective, and every page range, is a link — so you can pick up exactly where you left off.
1MapReduce73 questions
2Hadoop Ecosystem and NoSQL126 questions
3Natural Language Processing (NLP)98 questions
4Social Network Analysis (SNA)54 questions
5Data Science Theory and Methods63 questions
What a practice page gives you
1Five to a page
Short enough to finish, long enough to matter.
2Every answer explained
Not only which one is right — why the others are wrong.
3A discussion on each
Ask, answer, and vote. Every question has its own thread.
A question, and the idea behind it
Every question comes from a concept
These are not trivia. Each one is written against a concept in the book, so when you get one wrong there is somewhere to go and find out why.
The visual book
See it once. Carry it into the exam.
The pages shown here come from our AI-900 book — an example of how each concept is written in plain language and, where the idea needs one, drawn as a full page you can take in at a glance.
126concepts
469free questions
Why a picture, and not another paragraph
Three reasons, and each one is a real finding rather than a slogan.
You can see it againThe whole idea at onceWhere it starts, what happens in the middle, what comes out, and the mistake to avoid.
Multimedia principle · MayerThe look-alikes sit togetherThe pairs the exam tests are drawn side by side, so the difference is seen, not told.
Dual coding · PaivioWhat one page is made of
You are never asked to read a poster here — only to see how one is built. After that, every other page is legible at a glance.
1A numbered strip on top
The idea as a sequence, followed with a finger before a word is read.
2Panels for the parts
What it is, how the machine learns it, when it is the right tool.
3The trap, framed
The distinction the exam tests, given its own box instead of buried in prose.
4One line at the bottom
The sentence to carry into the exam room.
Open book, on purpose
Answer it with the picture beside you
This is the part that teaches. The illustration and the written explanation stay where they are while you work, so a scenario stops being a memory test and becomes something you can simply look at.
It teaches · it does not count
A smartphone uses AI to unlock when the owner looks at the camera. Which AI capability is being used?
AImage classification
BFacial recognition
COptical character recognition
DObject detection
Look at the five steps. Detect finds a face, align straightens it, encode turns it into numbers, search compares it with a stored face, and decide answers one question: is this the same person? Classification would only say “a face”. Detection would only draw a box. Neither decides whose.
Then the page shuts, and it starts counting
The same questions come back with the book closed — that run is the one that counts. After it, your coach picks one thing for tonight, sized to the time you have, and brings pages back before you lose them.
Testing effect · Roediger & Karpicke 2006 · spacing effect · Cepeda et al. 2006
Official resources
Straight from Dell Technologies
Where the exam is defined, scheduled and scored.
3official links
126concepts mapped
The source
Dell Technologies’s own pages
We link to them rather than repeat them, so nothing here goes stale behind them.
Checked against the source
Every objective on the official Dell Technologies outline already has questions here
We build from the official skills outline, not from a summary of it — 19 objectives, 126 concepts written under them, and free questions against every one. When Dell Technologies changes the outline, this page changes with it.
19objectives on the outline→126concepts written→469free questions
An official page tells you what will be asked. It cannot tell you what you will get right.
That is the only question worth answering the night before, and no link answers it. You answer it by taking the questions with the book closed, and seeing what comes back.