DA0-001 Practice Test Questions Updated 140 Questions
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What are the special features of the CompTIA DA0-001 Exam
The CompTIA Data+ certification is an important one, because it's the first of its kind. It was developed to ensure that IT professionals had the necessary skills to work with data and perform advanced analysis.
The CompTIA Data+ certification is also unique in that it can be applied across several different industries. In fact, the curriculum for this exam focuses on three different areas: data analysis, communication and technology. This means that you'll need a strong understanding of all three areas to qualify for this exam. CompTIA DA0-001 exam dumps are the best way to make you perp fast.
The CompTIA Data+ certification is designed for those who have already gained experience working with data or those who want to learn more about it. The test consists of a series of questions designed to measure your knowledge about various aspects of data analysis.
NEW QUESTION 48
Data validation should occur only when data is initially brought into a organization.
- A. False.
- B. True.
Answer: A
NEW QUESTION 49
What SQL command is used to delete an entire table from a database?
- A. ALTER.
- B. MODIFY.
- C. DROP.
- D. DELETE.
Answer: C
NEW QUESTION 50
What technique is used to swap the values in rows and columns of tabular data?
- A. Classification.
- B. Transposition.
- C. Regression.
- D. Association.
Answer: B
NEW QUESTION 51
What is an example of data in transit?
- A. Data on a network.
- B. Data on a smartphone.
- C. Data on a hard disk.
- D. Data in memory on a computer.
Answer: A
Explanation:
A data network is a system designed to transfer data from one network access point to one other or more network access points via data switching, transmission lines, and system controls. Data networks consist of communication systems such as circuit switches, leased lines, and packet switching networks.
NEW QUESTION 52
What data type is most appropriate for storing postal codes, such as, U.S. ZIP codes?
- A. String.
- B. Float.
- C. Location.
- D. Integer.
Answer: A
NEW QUESTION 53
Taylor wants to investigate how manufacturing, marketing, and sales expenditures impact overall profitability for her company.
Which of the following systems is the most appropriate?
- A. Data warehouse.
- B. Data mart.
- C. OLTP.
- D. OLAP.
Answer: A
Explanation:
A Data mart is too narrow, because Taylor needs data from across multiple divisions.
OLAP is a broad term for analytical processing, and OLTP systems are transactional and not ideal for the task. Since Taylor is working with data across multiple different divisions, she will work with a Data warehouse.
NEW QUESTION 54
What European law requires that organizations handling personal information designate a Data Protection Officer (DPO)?
- A. HIPAA (Health Insurance Portability and Accountability Act)
- B. FERPA (Family Educational Rights and Privacy Act)
- C. GDPR (General Data Protection Regulation)
- D. GLBA (Gramm-Leach-Bliley Act)
Answer: C
Explanation:
The General Data Protection Regulation 2016/679 is a regulation in EU law on data protection and privacy in the European Union and the European Economic Area.
NEW QUESTION 55
Which one of the following values will appear first if they are sorted in descending order?
- A. Adam.
- B. Xavier.
- C. Aaron.
- D. Molly.
Answer: B
NEW QUESTION 56
Which one of the following is not a good example of discrete data type?
- A. Number of children.
- B. Attendees at a meeting.
- C. Temperature of a room.
- D. Years of experience.
Answer: C
NEW QUESTION 57
You are working with a dataset and want to change the names of categories that you used for different types of books.
What term best describes this action?
- A. Recording.
- B. Summarizing
- C. Aggregating.
- D. Filtering.
Answer: A
NEW QUESTION 58
Which one of the following tools would not be considered a fully featured analytics suite?
- A. Power BI.
- B. Domo.
- C. Minitab.
- D. MicroStrategy.
Answer: C
Explanation:
Correct answer A. Minitab.
Power BI, Domo, and MicroStrategy are all analytics suites offering features that fill many different needs within the analytics process.
Minitab is a statistical analysis package that lacks many of these capabilities.
NEW QUESTION 59
Which one of the following values would not be appropriately stored in integer data type?
- A. 0
- B. 1.2
- C. 1
- D. 2
Answer: B
NEW QUESTION 60
What is the maximum number of values that may be assigned to a single key in a key/value store?
- A. 0
- B. 1
- C. 2
- D. No maximum
Answer: D
NEW QUESTION 61
Analyze the values of X shown below
(2,2,5,6,7)
What is the range of these values?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: C
NEW QUESTION 62
You only have one opportunity to answer each question on the Data+ exam.
- A. False.
- B. True.
Answer: A
NEW QUESTION 63
Chris is building a database to store prices for items on a restaurant menu.
What data type is most appropriate for this field?
- A. Tags.
- B. Alphanumeric.
- C. Numeric.
- D. Date.
Answer: C
Explanation:
Prices are numbers stored in dollars and cents; as such, the data type needs to be capable of storing numbers.
NEW QUESTION 64
When would you show time on a standard line chart?
- A. Y-axis
- B. Color
- C. X-axis
- D. Legend
Answer: C
NEW QUESTION 65
Which one of the following is a measure of dispersion?
- A. Mean.
- B. Variance.
- C. Median.
- D. Mode.
Answer: B
NEW QUESTION 66
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