Microsoft DP-900 Practice Test 113
Question 1120
A telemetry producer needs a scalable event ingestion endpoint. What is the MOST appropriate next validation or correction?
- Test producer ingestion and consumer offsets across partitions.
- Run SQL CREATE TABLE against an Event Hubs namespace and claim it persists relational sales tables.
- Validate the measure under known filter slices.
- Inject interleaved customer events across partitions and inspect offsets.
Explanation
Correct Answer
A:Test producer ingestion and consumer offsets across partitions. This tests the intended result: consumers read partitioned event streams with tracked sequence and retention.
Incorrect Answers
B:Run SQL CREATE TABLE against an Event Hubs namespace and claim it persists relational sales tables. This unsafe shortcut leaves the Azure Event Hubs event ingestion problem unresolved. Expecting Event Hubs alone to run joins and produce Power BI measures is incorrect.
C:Validate the measure under known filter slices. It tests Power BI semantic model measures rather than the critical Azure Event Hubs event ingestion behavior. Event Hubs is a streaming ingestion service not a relational analytics database.
D:Inject interleaved customer events across partitions and inspect offsets. It tests Event streams partitioning and key order rather than the critical Azure Event Hubs event ingestion behavior. Event Hubs is a streaming ingestion service not a relational analytics database.
Question 1121
A supplier sends purchase orders as nested XML with attributes and namespaces. If the relevant XML tagged hierarchy safeguard is skipped, which failure is MOST directly associated with that omission?
- Moving to a document key-value store may lose required relational constraint enforcement.
- Selecting JSON solely because some fields are optional can complicate relational transactions.
- Treating all similarly named tags as identical loses namespace distinctions.
- Choosing a database table purely to store vast image binaries complicates content delivery.
Explanation
Correct Answer
C:Treating all similarly named tags as identical loses namespace distinctions. XML explicitly represents a hierarchy using nested tags and attributes. A suitable check is to inspect the document tree and validate representative namespace-qualified queries.
Incorrect Answers
A:Moving to a document key-value store may lose required relational constraint enforcement. This failure is associated with Azure SQL Database managed relational app; it is not the primary failure in the stated XML tagged hierarchy scenario. XML explicitly represents a hierarchy using nested tags and attributes.
B:Selecting JSON solely because some fields are optional can complicate relational transactions. This failure is associated with Relational rows versus document attributes; it is not the primary failure in the stated XML tagged hierarchy scenario. XML explicitly represents a hierarchy using nested tags and attributes.
D:Choosing a database table purely to store vast image binaries complicates content delivery. This failure is associated with Azure Blob Storage for object data; it is not the primary failure in the stated XML tagged hierarchy scenario. XML explicitly represents a hierarchy using nested tags and attributes.
Question 1122
A power plant wants abnormal temperature trends detected near-real-time. If the relevant Streaming anomaly detection and false positives safeguard is skipped, which failure is MOST directly associated with that omission?
- Advancing offsets before successful sink commit can lose events.
- Expecting a notebook file alone to execute a cluster without compute is incorrect.
- Triggering on every raw outlier can overwhelm incident responders.
- Treating a fixed row value as a dynamic measure can produce confusing visuals.
Explanation
Correct Answer
C:Triggering on every raw outlier can overwhelm incident responders. Real-time anomalies require context quality and sensitivity tuning. A suitable check is to replay labeled normal and abnormal test event sequences.
Incorrect Answers
A:Advancing offsets before successful sink commit can lose events. This failure is associated with Streaming checkpoints and replay; it is not the primary failure in the stated Streaming anomaly detection and false positives scenario. Real-time anomalies require context quality and sensitivity tuning.
B:Expecting a notebook file alone to execute a cluster without compute is incorrect. This failure is associated with Azure Databricks Apache Spark processing; it is not the primary failure in the stated Streaming anomaly detection and false positives scenario. Real-time anomalies require context quality and sensitivity tuning.
D:Treating a fixed row value as a dynamic measure can produce confusing visuals. This failure is associated with DAX calculated column versus measure; it is not the primary failure in the stated Streaming anomaly detection and false positives scenario. Real-time anomalies require context quality and sensitivity tuning.
Question 1123
A vendor needs temporary read-only access to one report blob. If the relevant Blob SAS delegated access safeguard is skipped, which failure is MOST directly associated with that omission?
- Choosing serverless without checking workload scale constraints may be costly.
- Moving frequently accessed objects to archive can disrupt low-latency requests.
- Overly long or permissive SAS tokens expose data if forwarded.
- Embedding an unbounded growing array can cause size and update hot spots.
Explanation
Correct Answer
C:Overly long or permissive SAS tokens expose data if forwarded. Shared access signatures grant bounded access without broad permanent account credentials. A suitable check is to check method scope expiry and recipient handling with test requests.
Incorrect Answers
A:Choosing serverless without checking workload scale constraints may be costly. This failure is associated with Cosmos DB serverless versus provisioned throughput; it is not the primary failure in the stated Blob SAS delegated access scenario. Shared access signatures grant bounded access without broad permanent account credentials.
B:Moving frequently accessed objects to archive can disrupt low-latency requests. This failure is associated with Hot cool cold and archive blob tiers; it is not the primary failure in the stated Blob SAS delegated access scenario. Shared access signatures grant bounded access without broad permanent account credentials.
D:Embedding an unbounded growing array can cause size and update hot spots. This failure is associated with Cosmos DB document embedded versus referenced data; it is not the primary failure in the stated Blob SAS delegated access scenario. Shared access signatures grant bounded access without broad permanent account credentials.
Question 1124
A new analyst cannot identify a governed source already streaming into Fabric. Select TWO statements that correctly describe the Fabric Real-Time hub stream discovery implementation and how it can be verified.
- Rename a Power BI bookmark Real-Time hub and assume it catalogs external streams.
- Use Fabric Real-Time hub to find and manage accessible streams.
- Authorized users locate sources and their connections under governance.
- Use event timestamps and supported late-event policies when analyzing event time.
- Select Import or DirectQuery appropriately based on freshness query load and capabilities.
Explanation
Correct Answers
B:Use Fabric Real-Time hub to find and manage accessible streams. This is an appropriate action for the Fabric Real-Time hub stream discovery case. Real-Time hub is a discovery and access experience for data in motion.
C:Authorized users locate sources and their connections under governance. This is directly observable success evidence for Fabric Real-Time hub stream discovery.
Incorrect Answers
A:Rename a Power BI bookmark Real-Time hub and assume it catalogs external streams. This is not a safe or appropriate Fabric Real-Time hub stream discovery implementation. Confusing stream discovery with a durable historical table leaves retention unspecified.
D:Use event timestamps and supported late-event policies when analyzing event time. This implements Event time versus processing time instead of the required Fabric Real-Time hub stream discovery function. Real-Time hub is a discovery and access experience for data in motion.
E:Select Import or DirectQuery appropriately based on freshness query load and capabilities. This implements Power BI Import versus DirectQuery mode instead of the required Fabric Real-Time hub stream discovery function. Real-Time hub is a discovery and access experience for data in motion.
Question 1125
Sensor readings arrive continuously rather than as one daily archive. What is the MOST appropriate next validation or correction?
- Test network reachability share permissions and file read/write.
- Reconcile known records and expected missing-value rates.
- Run one report at midnight and label it a continuous stream.
- Measure source-to-alert latency with controlled events.
Explanation
Correct Answer
D:Measure source-to-alert latency with controlled events. This tests the intended result: new readings trigger timely results within defined event latency.
Incorrect Answers
A:Test network reachability share permissions and file read/write. It tests Azure Files SMB shared directories rather than the critical Event streaming continual processing behavior. Streaming processes ongoing events instead of waiting for a full batch.
B:Reconcile known records and expected missing-value rates. It tests Data quality completeness and accuracy rather than the critical Event streaming continual processing behavior. Streaming processes ongoing events instead of waiting for a full batch.
C:Run one report at midnight and label it a continuous stream. This unsafe shortcut leaves the Event streaming continual processing problem unresolved. Treating a high-rate stream as an hourly CSV export delays detection.
Question 1126
A data platform must support both source files and curated dimension tables. What is the MOST appropriate next validation or correction?
- Replay source changes around failure and timestamp boundaries.
- Store every photograph as a dimension key and delete the original media.
- Validate file paths lineage and SQL measure reconciliation.
- Test events at minute boundaries and compare bucket counts.
Explanation
Correct Answer
C:Validate file paths lineage and SQL measure reconciliation. This tests the intended result: images remain retrievable while SQL reports query approved modeled facts.
Incorrect Answers
A:Replay source changes around failure and timestamp boundaries. It tests Incremental ingestion with watermark rather than the critical Structured warehouse and unstructured lake coexistence behavior. Large-scale analytics integrates multiple data formats and query models.
B:Store every photograph as a dimension key and delete the original media. This unsafe shortcut leaves the Structured warehouse and unstructured lake coexistence problem unresolved. Forcing binary media into every warehouse fact row increases processing overhead.
D:Test events at minute boundaries and compare bucket counts. It tests Tumbling time windows rather than the critical Structured warehouse and unstructured lake coexistence behavior. Large-scale analytics integrates multiple data formats and query models.
Question 1127
A monitoring team wants a notification after an error rate threshold is breached. After selecting the proper Fabric Activator rule-triggered action approach, which observation gives the clearest evidence of success?
- Aggregations reflect intended occurrence windows despite bounded delays.
- Relative category sizes and labels are clear.
- Dependency stages run in the intended order and failures are visible.
- The configured alert fires only for matching test conditions.
Explanation
Correct Answer
D:The configured alert fires only for matching test conditions. This is the directly observable result for Fabric Activator rule-triggered action; activator turns detected data conditions into governed actions.
Incorrect Answers
A:Aggregations reflect intended occurrence windows despite bounded delays. This supports Event time versus processing time, not confirmation of Fabric Activator rule-triggered action. The relevant evidence is that the configured alert fires only for matching test conditions.
B:Relative category sizes and labels are clear. This supports Column chart category comparison, not confirmation of Fabric Activator rule-triggered action. The relevant evidence is that the configured alert fires only for matching test conditions.
C:Dependency stages run in the intended order and failures are visible. This supports Fabric Data Factory pipeline orchestration, not confirmation of Fabric Activator rule-triggered action. The relevant evidence is that the configured alert fires only for matching test conditions.
Question 1128
Database storage usage rises quickly near a capacity limit. After selecting the proper DBA monitoring capacity and alerts approach, which observation gives the clearest evidence of success?
- Downstream reflects tested insert update and delete events in order.
- Aggregates group actual status codes rather than arbitrary matching text.
- Analytical reads avoid excessive file enumeration and irrelevant partitions.
- Threshold breaches trigger timely investigation before service outage.
Explanation
Correct Answer
D:Threshold breaches trigger timely investigation before service outage. This is the directly observable result for DBA monitoring capacity and alerts; database operations require health monitoring and capacity planning.
Incorrect Answers
A:Downstream reflects tested insert update and delete events in order. This supports CDC incremental change propagation, not confirmation of DBA monitoring capacity and alerts. The relevant evidence is that threshold breaches trigger timely investigation before service outage.
B:Aggregates group actual status codes rather than arbitrary matching text. This supports Log text extraction versus structured event fields, not confirmation of DBA monitoring capacity and alerts. The relevant evidence is that threshold breaches trigger timely investigation before service outage.
C:Analytical reads avoid excessive file enumeration and irrelevant partitions. This supports Data engineer partition and file layout, not confirmation of DBA monitoring capacity and alerts. The relevant evidence is that threshold breaches trigger timely investigation before service outage.
Question 1129
Business intelligence measures are double counted after arbitrary joins. Which principle BEST explains the correct Star schema report model design decision?
- Star schemas simplify controlled dimension filtering for analytics.
- Power Query handles data acquisition and shaping before semantic modeling.
- Star schemas simplify analytical slicing around fact and dimension tables.
- ELT loads before transformation and uses destination processing resources.
Explanation
Correct Answer
A:Star schemas simplify controlled dimension filtering for analytics. In this case the applicable decision is to model a central fact table and suitable date customer and product dimensions.
Incorrect Answers
B:Power Query handles data acquisition and shaping before semantic modeling. That concept explains Power Query shaping transformation; the situation instead concerns Star schema report model. Joining dimensions directly to many unrelated fact tables can cause ambiguous paths.
C:Star schemas simplify analytical slicing around fact and dimension tables. That concept explains Star schema analytical query model; the situation instead concerns Star schema report model. Joining dimensions directly to many unrelated fact tables can cause ambiguous paths.
D:ELT loads before transformation and uses destination processing resources. That concept explains ELT warehouse pushdown transforms; the situation instead concerns Star schema report model. Joining dimensions directly to many unrelated fact tables can cause ambiguous paths.
Question 1130
A factory needs alerts seconds after machine vibration crosses a threshold. Which choice BEST meets this requirement?
- Separate descriptive measurement from diagnostic analysis of contributing factors.
- Establish shared metric definitions and validate semantic calculations.
- Ingest and evaluate events as they arrive with a streaming pipeline.
- Run one report at midnight and label it a continuous stream.
Explanation
Correct Answer
C:Streaming processes ongoing events instead of waiting for a full batch.
Incorrect Answers
A:Separate descriptive measurement from diagnostic analysis of contributing factors. That action primarily handles Descriptive versus diagnostic analytics; the given requirement is Event streaming continual processing. Streaming processes ongoing events instead of waiting for a full batch.
B:Establish shared metric definitions and validate semantic calculations. That action primarily handles Data analyst metric definition; the given requirement is Event streaming continual processing. Streaming processes ongoing events instead of waiting for a full batch.
D:Run one report at midnight and label it a continuous stream. It does not implement Event streaming continual processing. Treating a high-rate stream as an hourly CSV export delays detection.