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| Section | Weight | Objectives |
|---|---|---|
| Visualization | 20% | - Chart and dashboard design principles - Data storytelling and reporting tools - Visualization best practices |
| Data Analysis | 25% | - Statistical methods and analysis techniques - Trend and pattern identification - Data interpretation and reporting |
| Data Concepts and Environments | 15% | - Data lifecycle and data ecosystems - Data types, structures, and file formats - Data storage systems and platforms |
| Data Governance, Quality, and Controls | 15% | - Data governance frameworks and policies - Data quality management - Compliance, privacy, and security controls |
| Data Mining | 25% | - Data manipulation and cleaning techniques - Data collection and extraction methods - Data processing and transformation |
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NEW QUESTION # 151
An analyst must use the same data to create reports for police patrol supervisors, the city council, and a public website. Which of the following is the best way to differentiate the reports?
Answer: B
NEW QUESTION # 152
Which of the following is a reason for sampling?
Answer: C
Explanation:
Sampling is used to draw conclusions about a large population by analyzing a representative subset of data.
NEW QUESTION # 153
Which of the following is the best reason for a company to use a CSV file to share data instead of an Excel file?
Answer: C
Explanation:
This question pertains to theData Concepts and Environmentsdomain, focusing on file formats for data sharing. The task is to identify the best reason to choose CSV over Excel for sharing data.
* CSV files can store different types of encoding (Option A): While CSV files can use different encodings, this isn't the primary reason to choose them over Excel.
* CSV files are not vendor-specific (Option B): CSV is a plain-text format that can be opened by any software, unlike Excel files, which are tied to Microsoft Excel, making CSV more interoperable and the best reason for sharing.
* CSV files are smaller in size (Option C): CSV files are often smaller due to their simplicity, but this isn't always the primary reason for sharing.
* CSV files are easier to change in text editors (Option D): While true, this isn't the most compelling reason for sharing data across systems.
The DA0-002 Data Concepts and Environments domain includes understanding "data schemas and dimensions," and CSV's vendor-neutral nature makes it ideal for sharing data.
Reference: CompTIA Data+ DA0-002 Draft Exam Objectives, Domain 1.0 Data Concepts andEnvironments.
NEW QUESTION # 154
A data breach occurs at a company. Which of the following actions should be taken?
Answer: B
Explanation:
This question falls under theData Governancedomain, focusing on data breach response protocols. A data breach requires a structured response to comply with legal and regulatory requirements.
* Make an announcement on social media so customers are aware as soon as possible (Option A):
Public announcement without internal coordination or regulatory notificationcan lead to legal issues and loss of trust.
* Tell the company management team and then tell regulatory agencies (Option B): This follows best practices: inform internal leadership to coordinate a response, then notify regulatory agencies as required by laws (e.g., GDPR mandates notification within 72 hours).
* Keep the incident a secret until the issue is resolved (Option C): This violates regulations requiring timely breach notification.
* Inform the entire IT sector, but ask for discretion (Option D): Sharing with the IT sector is vague and risks leaks; regulatory agencies should be prioritized.
The DA0-002 Data Governance domain includes "data privacy concepts," such as proper breach response procedures, emphasizing internal and regulatory notification.
Reference: CompTIA Data+ DA0-002 Draft Exam Objectives, Domain 5.0 Data Governance.
NEW QUESTION # 155
A data analyst is creating a report that provides information to parents and residents about the school distinct and its individual schools. Which of the following statistical methods is best suited for reporting this information?
Answer: C
Explanation:
Descriptive statistics are used to summarize and present existing data in a meaningful way. Since the report is intended to provide information about the school district and its individual schools, descriptive methods are best suited to present current facts, metrics, and characteristics without making predictions or drawing conclusions about a larger population.
NEW QUESTION # 156
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