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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.

  • 课程
  • 加拿大
  • 80道题
  • 核对于2026年10月13日
  • 事实核查：2026年10月13日

快速解答

这门免费课程包括约300分钟的课程、4个不限时的专题测验（共80道题），以及一次随机抽取40道题的限时期末评估。期末评估得分达到80%或以上即可下载结业证书（私人颁发，未经认证）。 已于2026年10月13日根据官方资料核对。

从课文开始Azure Data Fundamentals (DP-900): Lessons：阅读时间约300分钟。测试中的每道题在课文中都有讲解。

你将学到什么

  • 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

得分达到80%或以上即可下载证书。

你的学习计划

阅读每一课，完成对应的专题测验（不限时，有解释），然后参加限时的期末评估。每次都会抽取新的题目组合。你的进度保存在此浏览器中。

  1. 阅读课程4课，约300分钟
  2. 专题测验1：Core data concepts20道题
  3. 专题测验2：Relational data on Azure20道题
  4. 专题测验3：Non-relational data on Azure20道题
  5. 专题测验4：Analytics workloads20道题
  6. 结业考试40道题，40分钟 · 得分达到80%或以上

专题测验1：Core data concepts

  1. 第1题，共20题

    Which kind of data follows a fixed schema, so every record has the same fields?
    显示答案

    答案: A. Structured data

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

  2. 第2题，共20题

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

    答案: B. Semi-structured data

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

  3. 第3题，共20题

    Video recordings from a security camera are an example of which kind of data?
    显示答案

    答案: B. Unstructured data

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

  4. 第4题，共20题

    In a customer record, the customer's phone number is best described as what?
    显示答案

    答案: 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. 第5题，共20题

    Which file format separates fields with commas and puts each record on its own line?
    显示答案

    答案: D. CSV

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

  6. 第6题，共20题

    Which human-readable format uses tags in angle brackets and has largely been replaced by the less wordy JSON format?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

    答案: 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. 第7题，共20题

    Which statement describes the Parquet file format?
    显示答案

    答案: 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. 第8题，共20题

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

    答案: 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. 第9题，共20题

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

    答案: A. Key-value database

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

  10. 第10题，共20题

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

    答案: B. Graph database

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

  11. 第11题，共20题

    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?
    显示答案

    答案: 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. 第12题，共20题

    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?
    显示答案

    答案: 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. 第13题，共20题

    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?
    显示答案

    答案: 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. 第14题，共20题

    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?
    显示答案

    答案: D. Durability

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

  15. 第15题，共20题

    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?
    显示答案

    答案: C. Isolation

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

  16. 第16题，共20题

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

    答案: A. Database administrator

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

  17. 第17题，共20题

    Which role designs and builds data ingestion pipelines, cleansing and transformation steps, and data stores for analytical workloads?
    显示答案

    答案: 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. 第18题，共20题

    Which role explores data to find trends, builds analytical models and creates reports and visualizations for the business?
    显示答案

    答案: B. Data analyst

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

  19. 第19题，共20题

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

    答案: D. ELT

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

  20. 第20题，共20题

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

    答案: 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.

考前须知

  • 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.

常见问题

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.

这份证书是否经过认证或获得官方认可？

不是。这是一份私人颁发的结业证书，仅用于知识学习。它未获得任何政府、执照发放机构、监管机构或教育机构的认可、认证或批准，也不能替代法律要求的任何执照、资格证书或培训。

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