Objective 1.4
PDEDesigning data migrations
Objective 1.4 sits in Designing data processing systems, which carries 22% of the Data Engineer exam. The questions below are original, written from the official objective title above, and each explanation cites the Google Cloud page it rests on.
Objective title verbatim from the official objectives. Google Cloud exam page ↗
A worked example
Shown solved, with the whole explanation open: this is what every question here carries.
A company needs Datastream to reach an Oracle database in its own data center over an existing Interconnect, with no traffic crossing the public internet. Which element covers that?
Correct.
Concept
Reaching a source that is not on the public internet is a networking concern settled once, apart from the objects that describe credentials or move rows.
Why C
Private connectivity configurations let Datastream communicate with a source over a private network, including external sources reached over VPN or Interconnect, through a VPC peering connection.
Source
Google Cloud: Datastream overview, checked August 2026Private connectivity configurations enable Datastream to communicate with a data source over a private network (internally within Google Cloud, or with external sources connected over VPN or Interconnect). This communication happens through a Virtual Private Cloud (VPC) peering connection.
Now you: objective 1.4 questions
No account needed. The explanation opens when you answer.
Sample question 1 of 3
An engineer setting up Datastream must record the endpoint details for both the source database and the destination before any data moves. Which object holds that?
Sample question 2 of 3
A team has created Datastream connection profiles and now adds a stream on top of them. What does that stream move from source to destination?
Sample question 3 of 3
An organization wants Datastream to stream records out of a hosted business application rather than a database. Which application source is supported?
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Read the sources
These are the official pages the questions above cite. Reading them is studying the objective from the primary source, which is what the explanations point you toward anyway.