1|Page
D465 - DATA APPLICATIONS EXAM 2025 |
CERTIFIED EXAM QUESTIONS WITH VERIFIED
EXAM AND CORRECT ANSWERS
R and Python similarities - Correct-answer-Both widely used in data science with
extensive libraries.
R unique challenges - Correct-answer-Steeper learning curve, limited web dev
capabilities.
Advantage of storing code in R - Correct-answer-Allows reproducibility and
collaboration among analysts.
Programming languages and use cases - Correct-answer-Python: web dev, data
science, ML, automation.
,2|Page
MIN function in spreadsheets - Correct-answer-Returns the smallest value in a cell
range.
COUNTIF function in spreadsheets - Correct-answer-Counts cells meeting a
specified condition.
Pivot table elements - Correct-answer-Rows, columns, values, filters for data
aggregation.
SELECT command in SQL - Correct-answer-Retrieves data from one or more
database tables.
JOIN commands in SQL - Correct-answer-INNER, LEFT, RIGHT, FULL OUTER JOIN
types.
Delimiter for code chunks - Correct-answer-Triple backticks or markup to define
code sections.
,3|Page
Output formats for documents - Correct-answer-HTML, PDF, Word (docx),
Markdown.
Presentation formats - Correct-answer-Slides, Dashboards, Interactive web apps.
Knit button in R - Correct-answer-Compiles R Markdown into desired output
formats.
Symbol for comments in R - Correct-answer-Pound sign (`#`) precedes comments
in R.
Nested function usage - Correct-answer-Simplifies operations, improves code
readability.
Logical operators - Correct-answer-AND (&&), OR (||), NOT (!).
, 4|Page
Advantage of tidyverse - Correct-answer-Cohesive data manipulation packages in
R.
Functions in ggplot2 - Correct-answer-ggplot(), geom_point(), geom_line(), aes().
Plus sign in ggplot2 - Correct-answer-Adds layers to ggplot objects for
customization.
Common errors in ggplot2 - Correct-answer-Incorrect aesthetic mappings, syntax
misunderstanding.
Basic aesthetic attributes in ggplot2 - Correct-answer-x-axis, y-axis, color for plot
customization.
Smoothing line usage - Correct-answer-Visual representation of trends in data.
D465 - DATA APPLICATIONS EXAM 2025 |
CERTIFIED EXAM QUESTIONS WITH VERIFIED
EXAM AND CORRECT ANSWERS
R and Python similarities - Correct-answer-Both widely used in data science with
extensive libraries.
R unique challenges - Correct-answer-Steeper learning curve, limited web dev
capabilities.
Advantage of storing code in R - Correct-answer-Allows reproducibility and
collaboration among analysts.
Programming languages and use cases - Correct-answer-Python: web dev, data
science, ML, automation.
,2|Page
MIN function in spreadsheets - Correct-answer-Returns the smallest value in a cell
range.
COUNTIF function in spreadsheets - Correct-answer-Counts cells meeting a
specified condition.
Pivot table elements - Correct-answer-Rows, columns, values, filters for data
aggregation.
SELECT command in SQL - Correct-answer-Retrieves data from one or more
database tables.
JOIN commands in SQL - Correct-answer-INNER, LEFT, RIGHT, FULL OUTER JOIN
types.
Delimiter for code chunks - Correct-answer-Triple backticks or markup to define
code sections.
,3|Page
Output formats for documents - Correct-answer-HTML, PDF, Word (docx),
Markdown.
Presentation formats - Correct-answer-Slides, Dashboards, Interactive web apps.
Knit button in R - Correct-answer-Compiles R Markdown into desired output
formats.
Symbol for comments in R - Correct-answer-Pound sign (`#`) precedes comments
in R.
Nested function usage - Correct-answer-Simplifies operations, improves code
readability.
Logical operators - Correct-answer-AND (&&), OR (||), NOT (!).
, 4|Page
Advantage of tidyverse - Correct-answer-Cohesive data manipulation packages in
R.
Functions in ggplot2 - Correct-answer-ggplot(), geom_point(), geom_line(), aes().
Plus sign in ggplot2 - Correct-answer-Adds layers to ggplot objects for
customization.
Common errors in ggplot2 - Correct-answer-Incorrect aesthetic mappings, syntax
misunderstanding.
Basic aesthetic attributes in ggplot2 - Correct-answer-x-axis, y-axis, color for plot
customization.
Smoothing line usage - Correct-answer-Visual representation of trends in data.
