DA0-002 Testing Engine, DA0-002 Prüfungen

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CompTIA DA0-002 Prüfungsplan:

ThemaEinzelheiten
Thema 1
  • Data Mining: This section of the exam measures skills of a Business Intelligence Analyst and covers how data is collected, cleaned, and prepared for analysis. It explains methods like ETL and ELT for data integration, as well as web scraping, API use, and survey data collection. Candidates are expected to identify issues like missing or duplicated data and apply techniques like filtering, sorting, merging, and normalizing. The section also touches on query optimization strategies to improve data handling efficiency.
Thema 2
  • Visualization: This section of the exam measures skills of a Data Visualisation Specialist and focuses on turning raw data into clear, visual insights. It teaches how to match visual formats like bar charts, heat maps, and line graphs to specific audiences and needs. Candidates must understand how to create dashboards and reports using proper design elements such as labels, layout, branding, and colour schemes. This section also includes best practices for dashboard development and delivery through various platforms and user access levels.
Thema 3
  • Data Concepts and Environments: This section of the exam measures the skills of a Junior Data Analyst and focuses on understanding core data concepts such as database types, schema structures, and data formats. It highlights differences between structured and unstructured data, compares file types like CSV, JSON, and XML, and introduces key ideas about data dimensions and slowly changing dimensions. Knowing how data is stored and organized helps professionals better prepare for analysis and reporting tasks.
Thema 4
  • 5.0 Data Governance, Quality, and Controls

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DA0-002 Prüfungen - DA0-002 Prüfungsinformationen

Qualitativ hochwertige DA0-002 Prüfungsunterlagen. Gehen Sie einen entscheidenden Schritt weiter. Mit der CompTIA DA0-002 Zertifizierung erhalten Sie einen Nachweis Ihrer besonderen Qualifikationen und eine Anerkennung für Ihr technisches Fachwissen. CompTIA bietet eine Reihe verschiedener Zertifizierungsprogramme für professionelle Benutzer an. Untersuchungen haben gezeigt, dass zertifizierte Fachleute häufig mehr verdienen können als ihre Kollegen ohne Zertifizierung.

CompTIA Data+ Exam DA0-002 Prüfungsfragen mit Lösungen (Q85-Q90):

85. Frage
A manager needs a report to be sent by email every Monday for the next six months. Which of the following is the best way to accomplish this task?

Antwort: C


86. Frage
Which of the following statistical measures is the most suitable and simple measure of the strengthsimple measure of the strength and direction of the linear relationship between price and volume?

Antwort: C

Begründung:
Correlation measures both the strength and direction of a linear relationship between two variables, such as price and volume.


87. Frage
The human resources department wants to know the number of employees who earn $125,000 or more. However, the department is concerned about duplicates in the data set. Given the following table:

Which of the following SQL statements resolves this issue?

Antwort: D

Begründung:
Counting distinct employee IDs removes duplicates while still restricting the result to employees whose salary is at least $125,000, which returns the number of unique employees meeting the requirement.


88. Frage
A database administrator is investigating the reason a reporting job failed. The target-layer schema remained unchanged from the last run, and the database server is scalable. All of the users have default execute privileges on the report. Which of the following attribute changes most likely caused this incident?

Antwort: A

Begründung:
A reporting job that previously ran successfully can fail when the volume of data increases beyond expected limits, causing timeouts, memory constraints, storage issues, or processing bottlenecks. Since the schema was unchanged, the server is scalable, and user permissions remained available, a change in data volume is the most likely cause of the failure.


89. Frage
A data engineer needs to add a process that will run after an employee table is loaded. The engineer does not know the name of the process that loads employee data. Which of the following is the best document for the engineer to review to find this information?

Antwort: A

Begründung:
A data lineage report documents the movement and transformation of data throughout systems and processes. It shows where data originates, how it is processed, and the dependencies between processes. Reviewing the data lineage report would help the engineer identify the process responsible for loading the employee table and determine where to add the subsequent process.


90. Frage
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