[UPDATED 2023] Free CompTIA DA0-001 Exam Questions Self-Assess Preparation [Q113-Q136] : Latest Exam Prep : http://certify.vceprep.com

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[UPDATED 2023] Free CompTIA DA0-001 Exam Questions Self-Assess Preparation [Q113-Q136]

[UPDATED 2023] Free CompTIA DA0-001 Exam Questions Self-Assess Preparation

DA0-001 Free Sample Questions to Practice One Year Update

Objectives of CompTIA DA0-001 Exam

In this section, we will list the objectives you should know in order to pass your CompTIA Data+ certification exam.

The first objective is to understand how to become a successful IT professional with data skills.

The second objective is to learn about different types of data, including structured and unstructured data.

The third objective is to be able to demonstrate your knowledge of at least two types of data storage: online and offline.

The fourth objective is to be able to describe how a client can access information from various sources through technology such as social media or the web. CompTIA DA0-001 exam dumps he best way to prepare for the exams.

The fifth objective is for you to be able to apply concepts related to using software applications such as Microsoft Office suite, Google Docs, and Adobe Creative Cloud.

Things You Should Know about the CompTIA DA0-001 Exam

CompTIA Data+ is a certification that validates your understanding of the fundamentals of computer data storage and management. It's a foundational certification that can be used to secure entry-level positions in various fields, such as IT, business intelligence, and application development.

CompTIA Data+ is not the only certification available for this subject matter. The CompTIA A+ and Microsoft Certified Solutions Associate exams also cover similar material. However, unlike those exams, CompTIA D+ does not have a pre-requisite requirement for passing it. If you already have a working knowledge of networking, operating systems (OS), and some basic computer concepts, you can prepare for this exam without any prior experience in these areas. CompTIA DA0-001 exam dumps will help you to clear the concepts.

CompTIA Data+ is designed to ensure that candidates have a thorough understanding of how data storage works and the basic concepts involved in managing it. This includes an understanding of how information is stored electronically on hard drives, solid-state drives (SSDs), magnetic tapes, optical discs and other storage devices; along with how data can be retrieved from these devices using appropriate software tools.

Q113. An analyst modified a data set that had a number of issues. Given the original and modified versions:

Which of the following data manipulation techniques did the analyst use?

Imputation

Recoding

Parsing

Deriving

Q114. Given the following graph:

Which of the following summary statements upholds integrity in data reporting?

Sales are approximately equal for Product A and Product B across all strategies.

Strategy 4 provides the best sales in comparison to other strategies.

While Strategy 2 does not result in the highest sales of Product D, over all products it appears to be the most effective.

Product D should be promoted more than the other products in all strategies.

Q115. Jenny wants to study the academic performance of undergraduate sophomores and wants to determine the average grade point average at different points during an academic year.
What best describes the data set she needs?

Sample.

Observation.

Variable.

Population.

Q116. A cereal manufacturer wants to determine whether the sugar content of its cereal has increased over the years.
Which of the following is the appropriate descriptive statistic to use?

Frequency

Percent change

Variance

Mean

Q117. You are a database administrator and you create a precompiled query that is stored on the database server.
What have you created?

Query execution plan.

Stored procedure.

Parameterized query.

Function as a service.

Q118. After completing web scraping, which of the following file formats needs to be parsed?

.html

.txt

.csv

.tsv

Q119. Which of the following best describes a business analytics tool with interactive visualization and business capabilities and an interface that is simple enough for end users to create their own reports and dashboards?
Python

Microsoft Power Bl

SAS

Q120. Which of the following describes the method of sampling in which elements of data are selected randomly from each of the small subgroups within a population?

Simple random

Cluster

Systematic

Stratified

Explanation
This is because stratified is a type of sampling in which elements of data are selected randomly from each of the small subgroups within a population, such as age groups, gender groups, or income groups. Stratified sampling can be used to ensure that the sample is representative and proportional of the population, as well as reduce the sampling error or bias. For example, stratified sampling can be used to select a sample of voters from different political parties based on their proportion in the population. The other types of sampling are not the types of sampling in which elements of data are selected randomly from each of the small subgroups within a population. Here is why:
Simple random is a type of sampling in which elements of data are selected randomly from the entire population, without dividing it into any subgroups. Simple random sampling can be used to ensure that every element in the population has an equal chance of being selected, as well as avoid any systematic error or bias. For example, simple random sampling can be used to select a sample of students from a school by using a lottery or a computer-generated number.
Cluster is a type of sampling in which elements of data are selected randomly from a few large subgroups within a population, such as regions, districts, or schools. Cluster sampling can be used to reduce the cost and complexity of sampling, as well as increase the feasibility and convenience of sampling. For example, cluster sampling can be used to select a sample of households from a few neighborhoods by using a map or a list.
Systematic is a type of sampling in which elements of data are selected at regular intervals from an ordered list or sequence within a population, such as every nth element or every kth element. Systematic sampling can be used to simplify and speed up the sampling process, as well as ensure that the sample covers the entire range or scope of the population. For example, systematic sampling can be used to select a sample of books from a library by using an alphabetical order or a numerical order.

Q121. A data analyst needs to calculate the mean for Q1 sales using the data set below:

Which of the following is the mean?

$2,466.18

$2,667.60

$3,082.72

$12,330.88

Q122. Which of the following statements would be used to append two tables that have the same number of columns?

UNION ALL

MERGE

GROUP BY

JOIN

Q123. Data validation should occur only when data is initially brought into a organization.

True.

False.

Q124. You recently downloaded a file containing website visitor logs from your organization’s web server.
What term best describes these logs at this point in the process?

Schema.

Intelligence.

Information.

Data.

Q125. 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.

Q126. Which of the following best describes an exploratory analysis?

Involves the use of descriptive statistics to understand observations

Involves analysis of exploring data sets for performance tracking

Involves the testing of specific hypotheses

Involves the use of arithmetic algebra to determine the distribution

Q127. A table in a hospital database has a column for patient height in inches and a column for patient height in centimeters. This is an example of:

dependent data.

duplicate data.

invalid data

redundant data

Q128. Which of the following contains alphanumeric values?

10.1E²

13.6

1347

A3J7

Q129. A junior web developer is developing a new application where users can upload short videos. The first task is to create a homepage that shows the headline “Upload Your Short Videos” and a clickable button that says “upload now”.
Which of the following HTML commands would help the developer to complete the task successfully?

< span >Upload Your Short Videos< /span >< button >upload now< /button >

< p >Upload Your Short Videos< /p >< p >upload now< /p >

< hl >Upload Your Short Videos< /h1 >< button >upload now< /button >

< hl >Upload Your Short Videos< /h1 >< hl >upload now< /h1 >

Q130. 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.

Q131. What type of regulation is the Payment Card Industry Data Security Standard (PCIDSS)?

Industry regulation

Civil law

Administrative law

Criminal law

Q132. Which of the following data manipulation techniques is an example of a logical function?

WHERE

AGGREGATE

BOOLEAN

Q133.

Which of the following logical statements results in Table B?

Q134. Which of the following is a common data analytics tool that is also used as an interpreted, high-level, general-purpose programming language?

SAS

Microsoft Power B1

IBM SPSS

Python

Q135. Andrew conducts a study and wants to capture eye color.
What kind of data is eye color?
Choose the best response.

Discrete.

Categorical.

Continuous.

Alphanumeric.

Q136. Under which of the following circumstances should the null hypothesis be accepted when a = 0.05?

When p is 0.00003

When p is 0.001

When p is 0.04

When p is 0.06

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