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The CompTIA DA0-001 certification exam is intended for individuals who have a basic understanding of data management concepts and technologies. It is suitable for professionals who are involved in data analysis, data warehousing, data governance, data quality, and data security. This certification exam is vendor-neutral, which means that it is not specific to any particular technology or product. The certification is recognized globally and is a valuable asset for individuals who are seeking to advance their careers in the field of data management. The certification exam consists of 90 multiple-choice questions, and candidates are required to score a minimum of 675 out of 900 to pass the exam.
The CompTIA DA0-001 Exam is designed for professionals working in a wide range of industries, including IT, healthcare, finance, and more. It is an entry-level certification, meaning that candidates do not need to have any prior experience in data management or analysis to take the exam. However, candidates should have a basic understanding of computer systems and software, as well as an interest in data and its management.
NEW QUESTION # 31
Analyzing a data point, you find that the point is 1 standard deviation above the mean.
What is the z-score for this data point?
- A. 0
- B. 1
- C. -0.5
- D. 0.5
Answer: A
NEW QUESTION # 32
Oliver is designing an ETL process to copy sales data into a data warehouse on a hourly basis.
What approach should Oliver choose that would be most efficient and minimize the chance of losing historical data?
- A. Use ELT instead of ETL.
- B. Bulk load.
- C. Delta load.
- D. Purge and load.
Answer: C
Explanation:
Correct answer D. Delta load
Since Oliver needs to migrate changes every hour, a delta load is the best approach.
NEW QUESTION # 33
When analyzing the values of two variables, you decide to convert both variables so they are on a scale of 0 to 1.
What term describes this action?
- A. Filtering.
- B. Aggregation.
- C. Normalization.
- D. Transposition.
Answer: C
Explanation:
Normalization is the process of reorganizing data in a database so that it meets two basic requirements: There is no redundancy of data, all data is stored in only one place. Data dependencies are logical, all related data items are stored together.
Put simply, data normalization ensures that your data looks, reads, and can be utilized the same way across all of the records in your customer database. This is done by standardizing the formats of specific fields and records within your customer database.
NEW QUESTION # 34
Which of the following roles is responsible for ensuring an organization's data quality, security, privacy, and regulatory compliance?
- A. Data steward.
- B. Data owner.
- C. Data processor.
- D. Data custodian.
Answer: A
Explanation:
Correct answer B. Data steward.
A data steward is responsible for leading an organization's data governance activities, which include data quality, security, privacy, and regulatory compliance.
NEW QUESTION # 35
How many variables may be shown in a simple pie chart?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: A
NEW QUESTION # 36
A data analyst was asked to create a chart that shows the relationship between study hours and exam scores for each student using the data sets in the table below:
Which of the following charts would BEST represent the relationship between the variables?
- A. A bar chart
- B. A heat map
- C. A histogram
- D. A scatter plot
Answer: A
NEW QUESTION # 37
What category of data stewardship work is focused on ensuring that the organization respects the wishes of data subjects?
- A. Data privacy.
- B. Data security.
- C. Data quality.
- D. Regulatory compliance.
Answer: A
Explanation:
Data privacy defines who has access to data, while data protection provides tools and policies to actually restrict access to the data. Compliance regulations help ensure that user's privacy requests are carried out by companies, and companies are responsible to take measures to protect private user data.
Why is data privacy important?
When data that should be kept private gets in the wrong hands, bad things can happen. A data breach at a government agency can, for example, put top secret information in the hands of an enemy state. A breach at a corporation can put proprietary data in the hands of a competitor.
NEW QUESTION # 38
Which of the following value is the measure of dispersion "range" between the scores of ten students in a test.
The scores of ten students in a test are 17, 23, 30, 36, 45, 51, 58, 66, 72, 77.
- A. 0
- B. 1
- C. 2
- D. 3
Answer: B
Explanation:
The correct answer is: 60
Range is the interval between the highest and the lowest score.
Range is a measure of variability or scatteredness of the varieties or observations among themselves and does not give an idea about the spread of the observations around some central value.
Symbolically R = Hs - Ls.
Where R = Range; Hs is the 'Highest score' and Ls is the Lowest Score.
The scores of ten students in a test are: 17, 23, 30, 36, 45, 51, 58, 66, 72, 77.
The highest score is 77 and the lowest score is 17.
So the range is the difference between these two scores Range = 77 - 17 = 60
NEW QUESTION # 39
You are measuring how much a child has grown over the past year and would like to express that using a percentage.
What calculation is most appropriate?
- A. Percent change.
- B. Percent difference.
- C. Percent variance.
- D. Percent deviation.
Answer: A
NEW QUESTION # 40
A sales team wants visibility of current sales numbers, pipeline, and team performance. The team would also like to see calculations of individuals' earned commissions and projected commissions based on sales, but they want that information to be kept confidential. Which of the following would be the BEST way to provide this visibility?
- A. Create a dashboard for sales numbers, pipeline, and team and individual performance for the management team.
- B. Create a dashboard with filters for the overall team, individuals, and management. Users can filter to see the data they want.
- C. Create a dashboard with views for team, individuals, and management. Configure permissions to control access.
- D. Create a dashboard displaying a data refresh date so users know the current sales numbers and configure permissions to control access.
Answer: A
NEW QUESTION # 41
A customer list from a financial services company is shown below:
A data analyst wants to create a likely-to-buy score on a scale from 0 to 100, based on an average of the three numerical variables: number of credit cards, age, and income. Which of the following should the analyst do to the variables to ensure they all have the same weight in the score calculation?
- A. Calculate the standard deviations of the variables.
- B. Recode the variables.
- C. Normalize the variables.
- D. Calculate the percentiles of the variables.
Answer: A
NEW QUESTION # 42
Which of the following would be used to store unstructured data from different sources?
- A. A data warehouse
- B. A database management system
- C. A data lake
- D. A database
Answer: C
NEW QUESTION # 43
An analyst needs to provide a chart to identify the composition between the categories of the survey response data set:
Which of the following charts would be BEST to use?
- A. Scatter pot
- B. Histogram
- C. Waterfall
- D. Pie
- E. Line
Answer: D
NEW QUESTION # 44
What SQL command is used to delete an entire table from a database?
- A. DROP.
- B. DELETE.
- C. ALTER.
- D. MODIFY.
Answer: A
NEW QUESTION # 45
Five dogs have the following heights in millimeters:
300, 430, 170, 470, 600
Which of the following is the mean height for the five dogs?
- A. 405mm
- B. 394mm
- C. 504mm
- D. 493mm
Answer: B
NEW QUESTION # 46
Which of the following entities would NOT be regulated by the Health Insurance Portability and Accountability Act (HIPAA)?
- A. A health insurance company.
- B. A health information clearinghouse.
- C. A health and fitness mobile app.
- D. A healthcare provider.
Answer: C
NEW QUESTION # 47
An analyst needs to conduct a quick analysis. Which of the following is the FIRST step the analyst should perform with the data?
- A. Conduct an initial analysis and use a Pareto chart.
- B. Conduct a trend analysis and use a scatter chart.
- C. Conduct an exploratory analysis and use descriptive statistics.
- D. Conduct a link analysis and illustrate the connection points.
Answer: C
NEW QUESTION # 48
How many US. states currently have data breach notification laws?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: A
NEW QUESTION # 49
A data analyst has been asked to organize the table below in the following ways:
By sales from high to low -
By state in alphabetic order -
Which of the following functions will allow the data analyst to organize the table in this manner?
- A. Filtering
- B. Sorting
- C. Conditional formatting
- D. Grouping
Answer: D
NEW QUESTION # 50
How should data classifications be assigned?
- A. According to sensitivity.
- B. According to sensitivity, criticality and age.
- C. According to sensitivity and criticality.
- D. According to criticality.
Answer: C
NEW QUESTION # 51
Which one of the following would not normally be considered a summary statistic?
- A. Variance.
- B. z-score.
- C. Standard deviation.
- D. Mean.
Answer: B
Explanation:
Simply put, a z-score (also called a standard score) gives you an idea of how far from the mean a data point is. But more technically it's a measure of how many standard deviations below or above the population mean a raw score is. A z-score can be placed on a normal distribution curve.
NEW QUESTION # 52
What internal document explains privacy responsibilities to employees who will handle personally identifiable information?
- A. Integrity policy
- B. Privacy policy
- C. Security policy
- D. Acceptable use policy
Answer: D
NEW QUESTION # 53
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