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Azure Data Fundamentals (DP-900) Exam Preparation 2026

This course is for people preparing for Microsoft Exam DP-900: Azure Data Fundamentals, the beginner exam on core data concepts and Microsoft cloud data services. Four lessons follow the four skill areas in Microsoft's study guide, with practical exercises. Each lesson has an untimed topic quiz with explanations, and a timed 40-question final assessment unlocks a certificate of completion when you score 80% or more.

  • Curso
  • Canadá
  • 80 preguntas
  • Revisado el 13 de octubre de 2026
  • Verificado el 13 de octubre de 2026

Respuesta rápida

Este curso gratuito tiene unos 300 minutos de lecciones, 4 pruebas temáticas sin límite de tiempo (80 preguntas en total) y una evaluación final cronometrada de 40 preguntas elegidas al azar. Saca un 80 % o más en la evaluación final para descargar un certificado de finalización (privado, no acreditado). Contrastado con fuentes oficiales el 13 de octubre de 2026.

Empieza por las leccionesAzure Data Fundamentals (DP-900): Lessons: unos 300 minutos de lectura. Todas las preguntas del test se tratan en las lecciones.

Qué aprenderás

  • Describe structured, semi-structured and unstructured data and common file formats
  • Explain transactional (OLTP) and analytical workloads, including ACID rules
  • Identify the main responsibilities of database administrators, data engineers and data analysts
  • Use relational ideas such as keys, normalization and common SQL statements
  • Choose between Azure SQL Database, Azure SQL Managed Instance, SQL Server on Azure VMs and open-source database services
  • Describe Azure Blob Storage, Azure Files, Azure Table storage and Azure Cosmos DB APIs
  • Describe large-scale and real-time analytics with Microsoft Fabric, Azure Databricks and related services
  • Pick suitable Power BI visuals and describe the parts of a data model

Obtén un 80 % o más para descargar tu certificado.

Tu plan de estudio

Lee cada lección, haz su prueba temática (sin límite de tiempo, con explicaciones) y luego la evaluación final cronometrada. Cada vez se elige una nueva mezcla de preguntas. Tu progreso se guarda en este navegador.

  1. Leer las lecciones4 lecciones, unos 300 min
  2. Prueba temática 1: Core data concepts20 preguntas
  3. Prueba temática 2: Relational data on Azure20 preguntas
  4. Prueba temática 3: Non-relational data on Azure20 preguntas
  5. Prueba temática 4: Analytics workloads20 preguntas
  6. Examen final40 preguntas, 40 min · Obtén un 80 % o más

Prueba temática 1: Core data concepts

  1. Pregunta 1 de 20

    Which kind of data follows a fixed schema, so every record has the same fields?
    Ver respuesta

    Respuesta: A. Structured data

    Structured data follows a fixed schema, usually as tables of rows and columns, so all records have the same fields.

  2. Pregunta 2 de 20

    A company stores customers as JSON documents. Some customers have two email addresses, and some have none. What kind of data is this?
    Ver respuesta

    Respuesta: B. Semi-structured data

    Semi-structured data has some structure but allows variation between records. JSON is a common format for it.

  3. Pregunta 3 de 20

    Video recordings from a security camera are an example of which kind of data?
    Ver respuesta

    Respuesta: B. Unstructured data

    Documents, images, audio, video and other binary files have no specific structure, so they are unstructured data.

  4. Pregunta 4 de 20

    In a customer record, the customer's phone number is best described as what?
    Ver respuesta

    Respuesta: D. An attribute of an entity

    Entities are the things an organization cares about, such as customers. Attributes are their characteristics, such as name, address and phone number.

  5. Pregunta 5 de 20

    Which file format separates fields with commas and puts each record on its own line?
    Ver respuesta

    Respuesta: D. CSV

    CSV is the most common delimited text format: commas separate fields, and a new line ends each row.

  6. Pregunta 6 de 20

    Which human-readable format uses tags in angle brackets and has largely been replaced by the less wordy JSON format?
    Ver respuesta

    Respuesta: A. XML

    XML defines elements and attributes with tags in angle brackets. It was popular in the 1990s and 2000s, but JSON has largely replaced it.

  7. Pregunta 7 de 20

    Which statement describes the Parquet file format?
    Ver respuesta

    Respuesta: A. A columnar format that stores each column's data together

    Parquet is a columnar format from Apache. Data for each column is stored together in row groups, and metadata helps apps find the right chunk quickly.

  8. Pregunta 8 de 20

    Which optimized file format is row-based and stores a JSON header that describes the binary records in the file?
    Ver respuesta

    Respuesta: A. Avro

    Avro is a row-based format created by Apache. Its JSON header describes the structure, and the data is stored as binary blocks of records.

  9. Pregunta 9 de 20

    In which type of non-relational database does each record have a unique key and a value that can be in any format?
    Ver respuesta

    Respuesta: A. Key-value database

    A key-value database stores each record as a unique key with an associated value in any format.

  10. Pregunta 10 de 20

    A social network wants to store people as nodes and the links between them as relationships. Which type of database fits best?
    Ver respuesta

    Respuesta: B. Graph database

    Graph databases store entities as nodes, with links that define the relationships between them.

  11. Pregunta 11 de 20

    Which type of database is a form of key-value database in which the value is a JSON document that the system can parse and query?
    Ver respuesta

    Respuesta: A. Document database

    A document database is a specific form of key-value database where the value is a JSON document the system is optimized to parse and query.

  12. Pregunta 12 de 20

    A store's checkout system records thousands of sales every hour and must create, read, update and delete records quickly. What kind of workload is this?
    Ver respuesta

    Respuesta: B. A transactional (OLTP) workload

    Online transactional processing (OLTP) systems record many small transactions and are optimized for both reads and writes (CRUD operations).

  13. Pregunta 13 de 20

    A bank moves $75 from account A ($500) to account B ($120). The debit from A works, but the credit to B fails. If the system follows ACID rules, what are the balances after the transaction ends?
    Ver respuesta

    Respuesta: A. A $500 and B $120

    Atomicity means a transaction succeeds completely or fails completely. Because the credit failed, the debit is also undone, so both balances stay as they were.

  14. Pregunta 14 de 20

    A transaction is committed, and then the database server loses power. When the server restarts, the change is still there. Which ACID property is this?
    Ver respuesta

    Respuesta: D. Durability

    Durability means that once a transaction is committed, it stays committed, even if the system is switched off and on again.

  15. Pregunta 15 de 20

    While a transfer between two accounts is in progress, another query cannot see one account before the transfer and the other after it. Which ACID property is this?
    Ver respuesta

    Respuesta: C. Isolation

    Isolation means transactions running at the same time cannot interfere with each other, so no query sees a half-finished transfer.

  16. Pregunta 16 de 20

    Which role is mainly responsible for database availability, performance, backup and recovery plans, and granting users access to data?
    Ver respuesta

    Respuesta: A. Database administrator

    Database administrators manage the design, operation and security of databases, including backups, recovery and user permissions.

  17. Pregunta 17 de 20

    Which role designs and builds data ingestion pipelines, cleansing and transformation steps, and data stores for analytical workloads?
    Ver respuesta

    Respuesta: A. Data engineer

    Data engineers build and monitor the pipelines that move and transform data, and they apply data cleaning routines across the organization.

  18. Pregunta 18 de 20

    Which role explores data to find trends, builds analytical models and creates reports and visualizations for the business?
    Ver respuesta

    Respuesta: B. Data analyst

    Data analysts turn raw data into insights by exploring it, modelling it and presenting it in reports and visualizations.

  19. Pregunta 19 de 20

    In an analytics solution, data is extracted and loaded into the data lake first, and transformed afterwards. What is this pattern called?
    Ver respuesta

    Respuesta: D. ELT

    In ELT (extract, load, transform), data is loaded first and transformed afterwards. In ETL, it is transformed before it is loaded.

  20. Pregunta 20 de 20

    Which type of analytical store combines the flexible, scalable file storage of a data lake with the relational querying of a data warehouse?
    Ver respuesta

    Respuesta: B. A data lakehouse

    A data lakehouse puts table abstractions over files in a data lake, so you get lake storage with warehouse-style SQL querying.

Qué debes saber antes del examen

  • The DP-900 skills measured (as of July 21, 2026) have four areas: core data concepts (25–30%), relational data on Azure (20–25%), non-relational data on Azure (15–20%) and an analytics workload (25–30%).
  • A passing score is 700 or greater. Scores are on a scale of 1 to 1,000, and because they are scaled, 700 may not equal 70% of the points.
  • Fundamentals exams have an exam time of 45 minutes, and Microsoft suggests allowing 65 minutes of seat time.
  • Microsoft does not list the exact number of DP-900 questions. It says most of its certification exams have 40–60 questions, but the number can vary.
  • There is no penalty for guessing, and some exam questions may be unscored, so answer every question.
  • The exam is proctored. You can schedule it through Pearson VUE, or through Certiport if you are a student or educator.
  • If you fail, you can retake the exam 24 hours after the first attempt; the wait for later retakes varies.
  • Fundamentals certifications do not expire.

Preguntas frecuentes

Is this the official DP-900 exam?

No. This is an independent practice course with original questions. To take the real exam, register on the Microsoft Learn exam page. Microsoft also offers a free practice assessment there.

What does the certificate of completion show?

It shows that you finished this course and scored at least 80% on its final assessment. It is not the Microsoft Certified: Azure Data Fundamentals certification and is not a Microsoft exam result.

How long is the real DP-900 exam, and how many questions does it have?

Microsoft gives Fundamentals exams 45 minutes. It does not publish the exact number of DP-900 questions; it says most of its exams have 40–60 questions.

What score do I need to pass DP-900?

You need 700 or greater on a scale of 1 to 1,000. It is a scaled score, so it may not equal 70% of the questions.

Does the Azure Data Fundamentals certification expire?

No. Microsoft says Fundamentals certifications do not expire.

How long is the final assessment here?

It has 40 questions in 40 minutes, drawn at random from all four topics, so every attempt is different. You need 80% to pass.

¿El certificado está acreditado o reconocido oficialmente?

No. Es un certificado de finalización privado, solo para tus conocimientos. No está reconocido, acreditado ni aprobado por ningún gobierno, organismo de licencias, regulador ni institución educativa, y no sustituye ninguna licencia, certificación ni formación exigida por la ley.

Fuentes

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