AZ-900 Study Guide + Practice
Short notes + common traps + quick practice. Then validate with the mini test.
Quick answers
- Read notes → do 10 questions → review mistakes immediately.
- Write 1 rule per mistake (symptom → cause → fix / concept → example).
- Repeat within 24–48 hours to lock it in.
- When accuracy is stable, switch to timed simulator practice.
This AZ-900 guide covers the storage decisions that appear everywhere: which tier fits the access pattern, and how redundancy changes availability and durability.
Fast mental model: Hot = frequent access, Cool = infrequent access, Archive = rare access and slow retrieval (lowest storage cost, higher access constraints).
Do the mini quiz to validate you can pick the right option. Then continue in PrepMaster for offline packs and detailed explanations.
Free Practice Test
10 random questions from the AZ-900 Study Notes: Storage Tiers (Hot/Cool/Archive) + Redundancy + Mini Quiz bank. Instant feedback.
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Study notes (fast guide)
Use these notes as a short explanation layer — then prove it with questions. The mini test above is the fastest feedback loop.
- Hot tier: frequently accessed data (higher storage cost, lower access cost)
- Cool tier: infrequent access (lower storage cost, higher access cost; often minimum retention considerations)
- Archive tier: rarely accessed (cheapest storage, slow retrieval; data is ‘rehydrated’ to Hot/Cool before use)
- Storage types at a glance: Blob vs Files vs Disks (high-level mapping for AZ-900)
- Redundancy basics: LRS vs ZRS vs GRS vs RA-GRS (what changes: zone/region replication and read access)
Topics & Skills Covered
- Hot tier: frequently accessed data (higher storage cost, lower access cost)
- Cool tier: infrequent access (lower storage cost, higher access cost; often minimum retention considerations)
- Archive tier: rarely accessed (cheapest storage, slow retrieval; data is ‘rehydrated’ to Hot/Cool before use)
- Storage types at a glance: Blob vs Files vs Disks (high-level mapping for AZ-900)
- Redundancy basics: LRS vs ZRS vs GRS vs RA-GRS (what changes: zone/region replication and read access)
Helpful Free Tools
Frequently Asked Questions
When should I choose the Archive tier?
When data is rarely needed and you can tolerate slow retrieval. It’s built for long-term retention and cost savings.
What’s the simplest way to remember redundancy options?
LRS = one region, ZRS = across zones, GRS = replicated to another region, RA-GRS = GRS plus read access to the secondary.
Do tiers apply to all storage types?
Access tiers are most commonly discussed with Blob storage in AZ-900 context.
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