Real DA0-001 are Uploaded by PrepAwayTest provide 2022 Latest DA0-001 Practice Tests Dumps [Q29-Q43]

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Real DA0-001 are Uploaded by PrepAwayTest provide 2022 Latest DA0-001 Practice Tests Dumps.

All DA0-001 Dumps and CompTIA Data+ Certification Exam Training Courses Help candidates to study and pass the CompTIA Data+ Certification Exam Exams hassle-free!

CompTIA DA0-001 Exam Syllabus Topics:

Topic	Details
Topic 1	Application programming interfaces (APIs) Determine data needs and sources to perform analysis
Topic 2	Given a scenario, apply the appropriate type of visualization Given a scenario, use appropriate methods for dashboard development
Topic 3	Compare and contrast different data types Identify basic concepts of data schemas and dimensions
Topic 4	Given a scenario, execute data manipulation techniques Explain data acquisition concepts
Topic 5	Summarize types of analysis and key analysis techniques Application programming interface (API) web services
Topic 6	Given a scenario, translate business requirements to form a report Compare and contrast types of reports
Topic 7	Data Concepts and Environments Compare and contrast common data structures and file formats

Q29. Melissa wants to explore central tendency in her dataset.
Which statistic best matches her need?

Interquartile range.

Range.

Median.

Standard deviation.

Correct answer C. Median.
The Median is the middle observation of variable and is, therefore, a measure of central tendency.
Interquartile range is a measure of position.
Range and Standard deviation are both measures of dispersion.

Q30. You only have one opportunity to answer each question on the Data+ exam.

True.

False.

Q31. You are creating a dashboard that shows the total revenue for your organization broken out by a variety of factors. Which one of these is a measure, rather than a dimension?

Revenue.

Month.

Department.

Geographic region.

Q32. A web developer wants to ensure that malicious users can’t type SQL statements when they asked for input, like their username/userid.
Which of the following query optimization techniques would effectively prevent SQL Injection attacks?

Indexing.

Subset of records.

Temporary table in the query set.

Parametrization.

The correct answer is D: Parametrization. Parameterized SQL queries allow you to place parameters in an SQL query instead of a constant value. A parameter takes a value only when the query is executed, allowing the query to be reused with different values and purposes. Parameterized SQL statements are available in some analysis clients, and are also available through the Historian SDK.
For example, you could create the following conditional SQL query, which contains a parameter for the collector’s name: SELECT* FROM ExamsDigest WHERE coursename=? ORDER BY tagname SQL Injection is best prevented through the use of parameterized queries.

Q33. The category PII (Personally identifiable information) includes all of the following, except_________.

Trade secrets.

Medical records.

Browsing habits.

Financial information.

Q34. Emma is working in a data warehouse and finds a finance fact table links to an organization dimension, which in turn links to a currency dimension that not linked to the fact table.
What type of design pattern is the data warehouse using?

Star.

Sun.

Snowflake.

Comet.

Correct answer C. Snowflake.
Since the dimension links to a dimension that isn’t connected to the fact table, it must be a Snowflake, with a Star, all dimensions link directly to the fact table, Sun and Comet are not data warehouse design patterns.

Q35. What term is used to describe an interactive visualization that encourages people to explore data dynamically?

Data set.

Dashboard.

Data point.

Graphical representation.

A dashboard is a visual display of all of your data. While it can be used in all kinds of different ways, its primary intention is to provide information at-a-glance, such as KPIs. A dashboard usually sits on its own page and receives information from a linked database.

Q36. How should data classifications be assigned?

According to criticality.

According to sensitivity.

According to sensitivity and criticality.

According to sensitivity, criticality and age.

Q37. 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?

Rapid Miner.

QLIK.

Power BI.

Minitab.

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.

Q38. What type of data is best suited for display using a tree map?

Time series data

Numeric data

Nested data

Text data

Q39. What SQL command is used to delete an entire table from a database?

DROP.

MODIFY.

DELETE.

ALTER.

Q40. Data definitions should be written in plain language.

True.

False.

Q41. Chris is building a database to store prices for items on a restaurant menu.
What data type is most appropriate for this field?

Numeric.

Date.

Tags.

Alphanumeric.

Prices are numbers stored in dollars and cents; as such, the data type needs to be capable of storing numbers.

Q42. George is conducting a survey. He intends to distribute the survey via email and wants to optionally follow up with respondents based on their answers.
What quality dimension is most vital to the success of George’s survey?
Choose the best answer.

Completeness.

Accuracy.

Consistency.

Validity.

Accuracy is for measuring how well an attribute matches its intended use.
Consistency measures an attribute’s value across systems.
Validity ensures an attribute’s value falls within an expected range.
While all of these dimensions are important, Completeness is foundational to George’s purpose.

Q43. 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?

Percent deviation.

Percent difference.

Percent variance.

Percent change.

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CompTIA DA0-001 Exam Syllabus Topics:

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