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Is the CompTIA Data+ certification worth earning?
Overall, it’s worth it. If you are a marketing analyst and have little connection with big data, it is still necessary to obtain a CompTIA Data+ certification, which will bring a lot of dividends to your career development.
Can I pass the CompTIA Data+ (DA0-001) exam in a short period of study?
Can’t. Before taking the CompTIA DA0-001 exam, it is desirable to have relevant experience (reporting/business analyst work), and then you will dedicate at least 35 to 45 hours of study time to prepare for the exam.
How to prepare for the DA0-001 exam efficiently?
First, you need useful DA0-001 practice materials.
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Third, proficiency dumps exam questions.
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Where can I find the newest CD0-001 exam questions (free)?
You’ve come to the right place, you can read the DA0-001 free dumps questions below.
CompTIA Data+ DA0-001 Free Dumps: DA0-001 Exam Practice Questions
Q1 – New
A data analyst for a media company needs to determine the most popular movie genre. Given the table below:
Which of the following must be done to the Genre column before this task can be completed?
A. Append
B. Merge
C. Concatenate
D. Delimit
Correct Answer: D
Q2 – New
What three technological innovations contribute to modern analytics? Choose three answers.
A. Data.
B. Dashboard.
C. Storage.
D. Computing.
Correct Answer: ACD
Q3 – New
Andy is a pricing analyst for a retailer. Using a hypothesis test, he wants to assess whether people who receive electronic coupons spend more on average. What should Andy\’s null hypothesis be?
A. People who receive electronic coupons spend more on average.
B. People who receive electronic coupons spend less on average.
C. People who receive electronic coupons do not spend more on average.
D. People who do not receive electronic coupons spend more on average.
Correct Answer: C
The null hypothesis presumes the status quo. Andy is testing whether or not people who receive an electronic coupon spend more on average, so, the null hypothesis states that people who receive the coupon do spend more on average.
Q4 – New
You are a database administrator and you create a precompiled query that is stored on the database server. What have you created?
A. Query execution plan.
B. Stored procedure.
C. Parameterized query.
D. Function as a service.
Correct Answer: B
A stored procedure is a set of Structured Query Language (SQL) statements with an assigned name, which are stored in a relational database management system (RDBMS) as a group, so it can be reused and shared by multiple programs.
SQL Server stored procedure is a batch of statements grouped as a logical unit and stored in the database. The stored procedure accepts the parameters and executes the T-SQL statements in the procedure, returns the result set if any.
Q5 – New
How many variables may be shown in a simple pie chart?
A. 4
B. 3
C. 2
D. 1
Correct Answer: D
Q6 – New
Which one of the following R values shows strongest positive correlation between two variables?
A. 0
B. 1.6
C. 0.9
D. -0.4
Correct Answer: C
Q7 – New
You have a database where queries are performing slowly. Investigating the results, you find that the database is performing a time-consuming table scan. What action can best improve the query performance?
A. Sub setting the records.
B. Parameterizing the query.
C. Recompiling the query.
D. Adding an index.
Correct Answer: D
You create an index to optimize performance when searching the table using the Find function and to establish uniqueness of table columns.
Indexing makes columns faster to query by creating pointers to where data is stored within a database.
Imagine you want to find a piece of information that is within a large database. To get this information out of the database the computer will look through every row until it finds it.
Q8 – New
What category of data stewardship work is focused on ensuring that the organization respects the wishes of data subjects?
A. Data quality.
B. Data privacy.
C. Data security.
D. Regulatory compliance.
Correct Answer: B
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.
Q9 – New
You are working with a professional statistician to perform an analysis and would like to use a statistics package. Which one of the following would be the most appropriate?
A. Rapid Miner.
B. QLIK.
C. Power BI.
D. Minitab.
Correct Answer: D
Minitab is statistical analysis software. It can be used for learning about statistics as well as statistical research. Statistical analysis computer applications have the advantage of being accurate, reliable, and generally faster than computing statistics and drawing graphs by hand.
Q10 – New
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.
Correct Answer: C
Q11 – New
Joseph is interpreting a left skewed distribution of test scores. Joe scored at the mean, Alfonso scored at the median, and gaby scored and the end of the tail. Who had the highest score?
A. Joseph
B. Joe
C. Alfonso
D. Gaby
Correct Answer: C
A left skewed distribution typically has a mean less than the median, with the tail representing the lowest score.
Q12 – New
What type of policy defines an individual\’s responsibilities when accessing, using, sharing, and removing organizational data?
A. Acceptable Use Policy (AUP)
B. Privacy policy
C. Data Usage Policy.
D. Data Integrity Policy.
Correct Answer: A
Q13 – New
Kelly wants to get feedback on the final draft of a strategic report that has taken her six months to develop. What can she do to get prevent confusion as see seeks feedback before publishing the report?
Choose the best answer.
A. Distribute the report to the appropriate stakeholders via email.
B. Use a watermark to identify the report as a draft.
C. Show the report to her immediate supervisor.
D. Publish the report on an internally facing website.
Correct Answer: B
While Kelly needs feedback from the appropriate stakeholders, doing so without a watermark could lead them to believe the report they receive is the final product.
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