Professional Data Engineer

Build and operate the data processing systems behind analytics and ML on Google Cloud, including BigQuery, Dataflow, and Pub/Sub, and track your readiness for the Professional Data Engineer exam.

Advanced

Prepare and test your skills

Advanced

Prepare and test your skills

Concept

Protocol Buffers

Topic in 1 exam domain

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Protocol Buffers · Concept
protocol buffers · Concept

Also called: gRPC protocol buffers, protobufs

An interface definition and serialization mechanism used by gRPC APIs to define their API surface.

Where this appears on the exam

1 subdomain in 1 of 5 domains

Domain 2
Ingesting and processing the data
~25% of exam
1. 2.1Planning the data pipelines
  - Defining data sources and sinks

How learners score on this topic

Last updated November 2, 2026

Professional Data Engineer

Build and operate the data processing systems behind analytics and ML on Google Cloud, including BigQuery, Dataflow, and Pub/Sub, and track your readiness for the Professional Data Engineer exam.

Advanced

Prepare and test your skills

Advanced

Prepare and test your skills

Concept

Protocol Buffers

Topic in 1 exam domain

X LinkedIn Facebook Reddit

Protocol Buffers · Concept
protocol buffers · Concept

Also called: gRPC protocol buffers, protobufs

An interface definition and serialization mechanism used by gRPC APIs to define their API surface.

Where this appears on the exam

1 subdomain in 1 of 5 domains

Domain 2
Ingesting and processing the data
~25% of exam
1. 2.1Planning the data pipelines
  - Defining data sources and sinks

How learners score on this topic

Last updated November 2, 2026

Where this appears on the exam

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How learners score on this topic

Where this appears on the exam

Related topics

Works with

Alternatives

Used by

How learners score on this topic