8/28/25, 7:00 PM GCP DATA ENGINEER CERTIFICATION
GCP Professional Data Engineer Certification Exam Newest
2025/2026 With Complete Questions And Correct Answers
|Already Graded A+||Brand New Version !! Actual exam GCP
Professional Data Engineer
A genomics research D. The correct answer is D because the output is
institute is developing a structured, will be queried with SQL, and will retrieve
platform for analyzing a large number of rows but few columns, making this a
data related to genetic good use case for columnar storage, which BigQuery
diseases. The genomics data uses. Options A and B are not good options because
is in a specialized format neither database supports SQL. Option C is incorrect
known as FASTQ, which because Cloud Storage is used for unstructured data
stores nucleotide and does not support querying the contents of
sequences and quality objects.
scores in a text format. Once
the files finish uploading, an
analysis pipeline runs, reads
the data in the FASTQ file,
and outputs data to a
database. The output is in
tabular structure, the data
is queried using SQL, and
typically queries retrieve
only a small number of
columns but many rows.
What database would you
recommend for storing
the output of the
workflow?
A. Cloud Bigtable
B. Cloud Datastore
C. Cloud Storage
D. BigQuery
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,8/28/25, 9:29 PM GCP Professional Data Engineer Certification
You are developing a new B. The correct answer is B. Bigtable is a wide-column
application and will be NoSQL database that supports semistructured data and
storing semi-structured works well with datasets over 1 TB. Options A, D, and C
data that will only be are incorrect because they all are used for
accessed by a single key. structured data. Option D is also incorrect because
The total volume of data will Cloud SQL does not currently scale to 40 TB in a
be at least 40 TB. What single database.
GCP database service
would you use?
A. BigQuery
B. Bigtable
C. Cloud Spanner
D. Cloud SQL
A group of climate B. The correct answer is B, write data to a Cloud
scientists is collecting Pub/Subtopic, which can scale automatically to
weather data every minute existing workloads. The ingestion process can read data
from 10,000 sensors from the topic and data and then process it. Some data
across the globe. Data will likely accumulate early in every minute, but the
often arrives near the ingestion process can catch up later in the minute after
beginning of a minute, and new data stops arriving. Option A is incorrect; Cloud
almost all data arrives Dataflow is a batch and stream processing service—
within the first 30 seconds it is not a message queue for buffering data. Option
of a minute. The data C is incorrect; Cloud SQL is not designed to scale for
ingestion process is losing ingestion as needed in this example. Option D is
some data because servers incorrect; Cloud Dataprep is a tool for cleaning and
cannot ingest the data as fast preparing datasets for analysis.
as it is arriving. The
scientists have scaled up
the number of servers in
their managed instance
group, but that has not
completely eliminated the
problem. They do not wish
to increase the maximum
size of the managed
instance group. What else
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,8/28/25, 9:29 PM GCP Professional Data Engineer Certification
can the scientists do to
prevent data loss?
A. Write data to a Cloud
Dataflow stream
B. Write data to a Cloud
Pub/Sub topic
C. Write data to Cloud SQL
table
D. Write data to Cloud
Dataprep
A software developer asks A. The correct answer is A. This is a good use case for
your advice about storing key-value databases because the value is looked up
data. The developer has by key only and the value is a JSON structure. Option
hundreds of thousands of 1 B is incorrect. Analytical databases are not a type of
KB JSON objects that need NoSQL database. Option C is not a good option
to be accessed in sub- because wide-column databases work well with
millisecond times if possible. larger databases, typically in the terabyte range.
All objects are referenced by Option D is incorrect because the data is not
a key. There is no need to modeled as nodes and links, such as a network
look up values by the model.
contents of the JSON
structure. What kind of
NoSQL database would you
recommend?
A. Key-value database
B. Analytical database
C. Wide-column database
D. Graph database
/ 3/246
, 8/28/25, 9:29 PM GCP Professional Data Engineer Certification
A software developer asks D. The correct answer is D. A document database
your advice about storing could store the volume of data, and it provides for
data. The developer has indexing on columns other than a single key. Options A
hundreds of thousands of and C do not support indexing on non-key attributes.
10 KB JSON objects that Option B is incorrect because analytical is not a type of
need to be searchable by NoSQL database.
most attributes in the JSON
structure. What kind of
NoSQL database would
you recommend?
A. Key-value database
B. Analytical
database
C. Wide-column database
D. Document database
A data modeler is B. The correct answer is B; OLAP data models are
designing a database to designed to support drilling down and slicing and
support ad hoc querying, dicing. Option A is incorrect; OLTP models are designed
including drilling down and to facilitate storing, searching, and retrieving individual
slicing and dicing queries. records in a database. Option C is incorrect; OLAP
What kind of data model is databases often employ denormalization. Option D is
the data modeler likely to incorrect; graph data models are used to model nodes
use? and their relationships, such as those in social
networks.
A. OLTP
B. OLAP
C. Normalized
D. Graph
A multinational C. The correct answer is C. Cloud Spanner is the only
corporation is building a globally scalable relational database for OLTP
global inventory database. applications. Options A and B are incorrect because
The database will support Cloud SQL will not meet the scaling requirements.
OLTP type transactions at Options B and D are incorrect because Cloud Datastore
a global scale. Which of the does not support OLTP models.
following would you
consider as possible
databases for the system?
/ 4/246
GCP Professional Data Engineer Certification Exam Newest
2025/2026 With Complete Questions And Correct Answers
|Already Graded A+||Brand New Version !! Actual exam GCP
Professional Data Engineer
A genomics research D. The correct answer is D because the output is
institute is developing a structured, will be queried with SQL, and will retrieve
platform for analyzing a large number of rows but few columns, making this a
data related to genetic good use case for columnar storage, which BigQuery
diseases. The genomics data uses. Options A and B are not good options because
is in a specialized format neither database supports SQL. Option C is incorrect
known as FASTQ, which because Cloud Storage is used for unstructured data
stores nucleotide and does not support querying the contents of
sequences and quality objects.
scores in a text format. Once
the files finish uploading, an
analysis pipeline runs, reads
the data in the FASTQ file,
and outputs data to a
database. The output is in
tabular structure, the data
is queried using SQL, and
typically queries retrieve
only a small number of
columns but many rows.
What database would you
recommend for storing
the output of the
workflow?
A. Cloud Bigtable
B. Cloud Datastore
C. Cloud Storage
D. BigQuery
/ 1/246
,8/28/25, 9:29 PM GCP Professional Data Engineer Certification
You are developing a new B. The correct answer is B. Bigtable is a wide-column
application and will be NoSQL database that supports semistructured data and
storing semi-structured works well with datasets over 1 TB. Options A, D, and C
data that will only be are incorrect because they all are used for
accessed by a single key. structured data. Option D is also incorrect because
The total volume of data will Cloud SQL does not currently scale to 40 TB in a
be at least 40 TB. What single database.
GCP database service
would you use?
A. BigQuery
B. Bigtable
C. Cloud Spanner
D. Cloud SQL
A group of climate B. The correct answer is B, write data to a Cloud
scientists is collecting Pub/Subtopic, which can scale automatically to
weather data every minute existing workloads. The ingestion process can read data
from 10,000 sensors from the topic and data and then process it. Some data
across the globe. Data will likely accumulate early in every minute, but the
often arrives near the ingestion process can catch up later in the minute after
beginning of a minute, and new data stops arriving. Option A is incorrect; Cloud
almost all data arrives Dataflow is a batch and stream processing service—
within the first 30 seconds it is not a message queue for buffering data. Option
of a minute. The data C is incorrect; Cloud SQL is not designed to scale for
ingestion process is losing ingestion as needed in this example. Option D is
some data because servers incorrect; Cloud Dataprep is a tool for cleaning and
cannot ingest the data as fast preparing datasets for analysis.
as it is arriving. The
scientists have scaled up
the number of servers in
their managed instance
group, but that has not
completely eliminated the
problem. They do not wish
to increase the maximum
size of the managed
instance group. What else
/ 2/246
,8/28/25, 9:29 PM GCP Professional Data Engineer Certification
can the scientists do to
prevent data loss?
A. Write data to a Cloud
Dataflow stream
B. Write data to a Cloud
Pub/Sub topic
C. Write data to Cloud SQL
table
D. Write data to Cloud
Dataprep
A software developer asks A. The correct answer is A. This is a good use case for
your advice about storing key-value databases because the value is looked up
data. The developer has by key only and the value is a JSON structure. Option
hundreds of thousands of 1 B is incorrect. Analytical databases are not a type of
KB JSON objects that need NoSQL database. Option C is not a good option
to be accessed in sub- because wide-column databases work well with
millisecond times if possible. larger databases, typically in the terabyte range.
All objects are referenced by Option D is incorrect because the data is not
a key. There is no need to modeled as nodes and links, such as a network
look up values by the model.
contents of the JSON
structure. What kind of
NoSQL database would you
recommend?
A. Key-value database
B. Analytical database
C. Wide-column database
D. Graph database
/ 3/246
, 8/28/25, 9:29 PM GCP Professional Data Engineer Certification
A software developer asks D. The correct answer is D. A document database
your advice about storing could store the volume of data, and it provides for
data. The developer has indexing on columns other than a single key. Options A
hundreds of thousands of and C do not support indexing on non-key attributes.
10 KB JSON objects that Option B is incorrect because analytical is not a type of
need to be searchable by NoSQL database.
most attributes in the JSON
structure. What kind of
NoSQL database would
you recommend?
A. Key-value database
B. Analytical
database
C. Wide-column database
D. Document database
A data modeler is B. The correct answer is B; OLAP data models are
designing a database to designed to support drilling down and slicing and
support ad hoc querying, dicing. Option A is incorrect; OLTP models are designed
including drilling down and to facilitate storing, searching, and retrieving individual
slicing and dicing queries. records in a database. Option C is incorrect; OLAP
What kind of data model is databases often employ denormalization. Option D is
the data modeler likely to incorrect; graph data models are used to model nodes
use? and their relationships, such as those in social
networks.
A. OLTP
B. OLAP
C. Normalized
D. Graph
A multinational C. The correct answer is C. Cloud Spanner is the only
corporation is building a globally scalable relational database for OLTP
global inventory database. applications. Options A and B are incorrect because
The database will support Cloud SQL will not meet the scaling requirements.
OLTP type transactions at Options B and D are incorrect because Cloud Datastore
a global scale. Which of the does not support OLTP models.
following would you
consider as possible
databases for the system?
/ 4/246
