Preparing Practice Exam…
Please wait a moment while the system generates the exam questions, answers, and study session.
Please wait a moment while the system generates the exam questions, answers, and study session.
Question 41 of 119
Free Preview · 119 of 395 · questions 1–119 of 395 are free. Sign up free to sync your progress across devices.
Select one answer.
Written by other learners. Comments can disagree with the marked answer — check the official documentation when in doubt.
- Turning the external lookup into a managed dataset lets Spark perform a distributed join instead of thousands or millions of remote API calls. Per-row API access creates bottlenecks, instability, and inconsistent runtime behavior.