About This Flashcard Deck
This flashcard deck contains 5 cards covering key Data & Infrastructure concepts for the AZ-305 exam. Practice data storage and infrastructure design for AZ-305. Use active recall by attempting to answer each question before revealing the answer. Research shows that flashcard-based active recall is one of the most effective study techniques for certification exams.
Question
When to choose Cosmos DB vs Azure SQL?
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Answer
Cosmos DB for global distribution, variable schemas, guaranteed low latency. Azure SQL for relational data, complex joins, ACID transactions, and SQL Server compatibility.
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All Data & Infrastructure Flashcards
Q: When to choose Cosmos DB vs Azure SQL?
A: Cosmos DB for global distribution, variable schemas, guaranteed low latency. Azure SQL for relational data, complex joins, ACID transactions, and SQL Server compatibility.
Q: How do you calculate composite SLA?
A: Multiply individual SLAs: e.g., App Service (99.95%) × SQL DB (99.99%) = 99.94%. Add redundancy to increase SLA above single-service levels.
Q: When to use hub-spoke vs Virtual WAN?
A: Hub-spoke for smaller deployments with custom routing control. Virtual WAN for large-scale with many branches, automated routing, and Microsoft-managed infrastructure.
Q: What is RPO vs RTO?
A: RPO (Recovery Point Objective): max acceptable data loss measured in time. RTO (Recovery Time Objective): max acceptable downtime before services are restored.
Q: When should you use Azure Front Door?
A: For global HTTP/HTTPS load balancing with SSL offloading, WAF, URL-based routing, and session affinity across multiple regions.
Effective Azure Flashcard Study Method
For Azure certifications, we recommend the spaced repetition approach: review these flashcards daily for the first week, then every other day for two weeks, then weekly until your exam date. Focus extra time on cards related to Azure service comparisons — understanding when to choose between similar services (e.g., App Service vs. AKS vs. Container Instances) is a common exam pattern.