DA0-002 Data Acquisition and Preparation Practice Question
A financial analytics firm needs to acquire historical stock market tick data (millions of records per day) from a data vendor. The vendor provides data via FTP in binary format. The firm's existing infrastructure uses on-premise servers with limited storage and processing power. They need to stream the data into a cloud data lake for analysis. However, the binary format is proprietary and requires a licensed decoder. The budget is constrained. Which approach best meets the data acquisition requirements?
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
✓
Purchase a license for the decoder and set up an ETL job to convert and upload
Purchasing the decoder license and setting up an ETL job to convert and upload to the cloud directly addresses the format issue and enables streaming to the data lake. Requesting CSV via email is impractical for millions of records. Negotiating for a JSON API is a good idea but may not be available or cost more than the decoder. Using a third-party service adds recurring costs and may introduce dependency.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Negotiate with the vendor to provide an API that outputs JSON
Why it's wrong here
This may not be possible or could be more expensive than the decoder license.
- ✓
Purchase a license for the decoder and set up an ETL job to convert and upload
Why this is correct
This allows processing of the binary format and integration with the cloud data lake, with a one-time cost.
- ✗
Request the vendor to send data in CSV format via email
Why it's wrong here
Email cannot handle millions of records per day, and the vendor may not accommodate.
- ✗
Use a third-party cloud service that already decodes and normalizes the data for a subscription fee
Why it's wrong here
Subscription fees could exceed the cost of a one-time decoder license, and the service may not cover all data needs.
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Senior Network & Security Engineer · founder of Courseiva
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