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CompTIA DA0-002 Exam Syllabus Topics:

SectionWeightObjectives
Topic 1: Data Concepts and Environments15%- Data lifecycle and data ecosystems
- Data types, structures, and file formats
- Data storage systems and platforms
Topic 2: Data Mining25%- Data manipulation and cleaning techniques
- Data processing and transformation
- Data collection and extraction methods
Topic 3: Data Analysis25%- Data interpretation and reporting
- Statistical methods and analysis techniques
- Trend and pattern identification
Topic 4: Visualization20%- Data storytelling and reporting tools
- Chart and dashboard design principles
- Visualization best practices
Topic 5: Data Governance, Quality, and Controls15%- Compliance, privacy, and security controls
- Data governance frameworks and policies
- Data quality management

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CompTIA Data+ Exam Sample Questions (Q35-Q40):

NEW QUESTION # 35
An analyst needs to combine the following two tables. The analyst needs to keep all the records in the Medals table and only the records that match from the Country table.

Which of the following methods should the analyst use for this task?

Answer: D

Explanation:
A join is used to combine rows from two tables based on a common field, in this case Person_ID.
Since all records from the Medals table must be retained and only matching records from the Country table included, the appropriate operation is a left join, which is a type of join.


NEW QUESTION # 36
Given the following dataset:
Day
Number of Guests
Monday
455
Tuesday
346
Wednesday
382
Thursday
563
Friday
887
Saturday
934
Sunday
346
Which of the following is the mode?

Answer: B

Explanation:
This question falls under theData Analysisdomain, focusing on statistical measures. The mode is the value that appears most frequently in a dataset.
* Monday: 455
* Tuesday: 346
* Wednesday: 382
* Thursday: 563
* Friday: 887
* Saturday: 934
* Sunday: 346
The value 346 appears twice (Tuesday and Sunday), while all other values (455, 382, 563, 887, 934) appear once. Thus, the mode is 346.
* Option A: 346- Correct, as it's the most frequent value.
* Option B: 446- Incorrect, as 446 doesn't appear in the dataset.
* Option C: 455- Incorrect, as 455 appears only once.
* Option D: 559- Incorrect, as 559 doesn't appear in the dataset.
The DA0-002 Data Analysis domain includes "applying the appropriate descriptive statistical methods," and the mode is a fundamental measure of central tendency.
Reference: CompTIA Data+ DA0-002 Draft Exam Objectives, Domain 3.0 Data Analysis.


NEW QUESTION # 37
Given the following tables:

Which of the following data privacy practices is being used to protect employees' email addresses when creating a report?

Answer: C

Explanation:
Masking hides sensitive data by replacing portions of the original value with obscured characters, such as replacing email addresses with "xxxxx@company.com" while preserving the format.


NEW QUESTION # 38
Which of the following best describes a characteristic of a Boolean?

Answer: B


NEW QUESTION # 39
A data analyst needs to derive a new field that flags sales within the month of January from the following sales table:

Which of the following types of functions should the analyst use to achieve the desired results?

Answer: D

Explanation:
Logical functions evaluate conditions such as whether the month equals January and can be used to create a flag indicating records that meet this criterion.


NEW QUESTION # 40
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