DBS-C01 Monitoring and Troubleshooting Practice Question
Network Topology
Refer to the exhibit. A developer is trying to query the ProductCatalog table using the 'Id' attribute. The query returns no results even though the developer knows data was inserted. What is the MOST likely cause?
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 table contains no items
The table shows ItemCount: 0, indicating no items exist. Even though data was inserted, if the write operation failed or was directed to a different table, the query returns no results. Option B is incorrect because provisioned throughput issues would cause throttling errors, not zero items. Option C is incorrect because the attribute definition exists (Id is defined). Option D is incorrect because the table status is ACTIVE as shown.
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 table contains no items
Why this is correct
ItemCount is 0, so the table is empty.
- ✗
The provisioned throughput is exceeded
Why it's wrong here
No items exist, so throughput is not an issue.
- ✗
The attribute definition is missing the 'Id' attribute
Why it's wrong here
The attribute definition includes 'Id'.
- ✗
The table is not in ACTIVE status
Why it's wrong here
The table status is ACTIVE.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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