When designing a distributed system, what is the primary trade-off between strong consistency and high availability?

High availability eliminates the need for consistency

Strong consistency can reduce availability during network partitions

Strong consistency improves performance

High availability always provides strong consistency

What is the purpose of replication in a disaster recovery strategy for data pipelines?

To simplify the data pipeline code

To improve the performance of data processing

To ensure data is available in multiple locations in case of a regional failure

To reduce the cost of data storage

A banking application requires strong consistency for financial transactions. The system must ensure that a transaction is either fully committed or fully rolled back, and that concurrent transactions do not interfere with each other. Which database service is most appropriate for this use case?

Cloud Firestore, which provides eventual consistency for reads and writes.

BigQuery, which provides strong consistency for queries but is not designed for transactional workloads.

Cloud Spanner, which provides strong consistency, atomicity, and isolation for transactions.

Cloud SQL, which provides ACID transactions but is limited to a single region.

In a Dataflow pipeline, what is the purpose of checkpointing?

To increase the parallelism of the pipeline

To save the state of the pipeline so it can resume from the last checkpoint after a failure

To validate the data before processing

Google CloudProfessional Data Engineer

Domain 1Objective 2

1.2 Designing for Reliability and Fidelity PROFESSIONAL-DATA-ENGINEER Practice Questions (Page 5)

Part of the Designing data processing systems domain, which accounts for ~22% of the PROFESSIONAL-DATA-ENGINEER exam. Google Cloud does not publish an official question count, but from its 120-minute exam (~50–80 total, ~11–18 in this domain), expect 3–5 from this objective — we provide 27 practice questions to prepare you well beyond it. (estimate)

27questions here

6free pages

11concepts

~22%of the exam

Questions 21–25

21foundation · easy
A data engineer wants to create a data pipeline using a visual interface without writing code. Which Google Cloud service is designed for this purpose?
Select an answer first
22foundation · easy
When designing a distributed system, what is the primary trade-off between strong consistency and high availability?
Select an answer first
23foundation · easy
What is the purpose of replication in a disaster recovery strategy for data pipelines?
Select an answer first
24expert · hard
A banking application requires strong consistency for financial transactions. The system must ensure that a transaction is either fully committed or fully rolled back, and that concurrent transactions do not interfere with each other. Which database service is most appropriate for this use case?
Select an answer first
25foundation · easy
In a Dataflow pipeline, what is the purpose of checkpointing?
Select an answer first

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