Question 420 of 1,446
PCDE Migrate data solutions Practice Question
An engineer is migrating a 20 TB PostgreSQL database to AlloyDB using DMS continuous migration. The full dump phase is taking longer than expected. Which THREE factors could affect the duration of the full dump phase? (Choose THREE.)
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The number of tables and indexes on the source.
Full dump time depends on data volume, network bandwidth, CPU/memory of the source, and configuration (e.g., parallel workers).
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
The version of the source PostgreSQL database.
Why it's wrong here
Version differences are minimal; not a primary factor.
- ✓
The number of tables and indexes on the source.
Why this is correct
More objects increase overhead.
- ✓
The CPU and I/O capacity of the source database server.
Why this is correct
Limited resources slow down dump extraction.
- ✗
The choice of SSL or non-SSL connection.
Why it's wrong here
SSL adds negligible overhead.
- ✓
Network bandwidth between the source and DMS.
Why this is correct
Lower bandwidth increases transfer time.
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Last reviewed: Jul 4, 2026
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