AZ-301 Research & Evidence-Based Practice 5 — Questions and Answers
Question 1: An architect must produce evidence that an Azure Event Hub namespace can sustain 50,000 events per second before production deployment. Which approach provides the most valid load evidence?
- Running a load test using Azure Load Testing targeting the Event Hub endpoint and measuring throughput and throttled request rates (Correct answer)
- Calculating theoretical throughput from Throughput Unit limits in documentation
- Reviewing Azure Advisor Event Hub recommendations
- Checking the Event Hub namespace metric 'Incoming Requests' in the portal
Correct answer: Running a load test using Azure Load Testing targeting the Event Hub endpoint and measuring throughput and throttled request rates
Azure Load Testing produces measured throughput evidence under realistic concurrency, validating actual Event Hub behavior rather than relying on theoretical limits.
Question 2: A compliance officer requests evidence that all Azure administrative actions on production resources were performed by authorized identities only. Which log source is the authoritative record?
- Azure Activity Log (Control Plane) scoped to production subscriptions (Correct answer)
- Azure Resource Health event history
- Azure Monitor VM guest OS logs
- Azure SQL Database audit logs
Correct answer: Azure Activity Log (Control Plane) scoped to production subscriptions
The Azure Activity Log records all control-plane operations with caller identity, timestamp, and result, making it the authoritative evidence source for administrative action audits.
Question 3: An architect is comparing Azure Cache for Redis tiers to justify a tier upgrade. Which metric provides the most direct evidence that cache eviction is causing application latency?
- 'Evicted Keys' metric in Azure Monitor combined with application response time correlation in Application Insights (Correct answer)
- Cache hit rate percentage alone
- Azure Advisor performance recommendation for Redis
- Redis server error log count
Correct answer: 'Evicted Keys' metric in Azure Monitor combined with application response time correlation in Application Insights
Correlating 'Evicted Keys' spikes in Azure Monitor with latency increases in Application Insights provides direct causal evidence linking eviction pressure to application performance degradation.
Question 4: Research into Azure Virtual WAN vs. hub-spoke VNet architecture requires latency evidence between 20 branch offices and a central hub. Which Azure tool collects this multi-site evidence most efficiently?
- Azure Network Watcher Connection Monitor configured with agents at each branch office measuring RTT to the hub (Correct answer)
- Azure Traffic Analytics flow logs
- Azure ExpressRoute circuit metrics
- Azure VPN Gateway diagnostic logs
Correct answer: Azure Network Watcher Connection Monitor configured with agents at each branch office measuring RTT to the hub
Connection Monitor with agents deployed at all 20 branches continuously measures RTT to the hub, collecting multi-site latency evidence that informs the architecture selection.
Question 5: When researching the TCO impact of migrating on-premises VMs to Azure, which tool provides evidence-based cost comparison with configurable on-premises cost assumptions?
- Azure Migrate TCO Calculator with customizable on-premises hardware, software, and labor inputs (Correct answer)
- Azure Pricing Calculator for VM costs only
- Azure Cost Management budget forecasting
- Azure Advisor cost recommendations post-migration
Correct answer: Azure Migrate TCO Calculator with customizable on-premises hardware, software, and labor inputs
The Azure Migrate TCO Calculator allows architects to input current on-premises hardware, maintenance, and labor costs, producing a side-by-side TCO comparison as evidence for migration business cases.
Question 6: A data governance team needs evidence that Azure Purview correctly classifies sensitive data in an Azure Data Lake. Which Purview feature provides classification accuracy evidence after a scan?
- Purview Data Map scan results showing classified assets with applied sensitivity labels and classification rules matched (Correct answer)
- Azure Policy data classification compliance report
- Azure Monitor storage diagnostic logs
- ADF pipeline data preview
Correct answer: Purview Data Map scan results showing classified assets with applied sensitivity labels and classification rules matched
Purview's scan results display each asset with the classification rules that triggered, allowing architects to validate sensitivity label accuracy and document evidence of correct classification.
Question 7: An architect is tasked with selecting the optimal Azure storage tier for research datasets accessed infrequently after 90 days. Which evidence source best quantifies cost savings from tiering?
- Azure Storage lifecycle management policy cost simulation using the Azure Pricing Calculator with access pattern inputs (Correct answer)
- Azure Advisor storage recommendations alone
- Azure Cost Management storage usage report
- Azure Blob Storage access tier change audit log
Correct answer: Azure Storage lifecycle management policy cost simulation using the Azure Pricing Calculator with access pattern inputs
Using the Azure Pricing Calculator with actual access frequency and data volume inputs simulates lifecycle management savings, producing quantified cost evidence to justify the tiering policy.
AZ-301 Research & Evidence-Based Practice 5
An architect must produce evidence that an Azure Event Hub namespace can sustain 50,000 events per second before production deployment.
Which approach provides the most valid load evidence?