Global Infrastructure Flashcards
(27 cards)
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What is the AWS Global Infrastructure composed of?
A collection of regions and edge locations connected by a high-speed private network.
What is an AWS Region?
A geographic area containing a full deployment of AWS services (compute, storage, databases, etc.).
Are AWS Regions the same as countries or continents?
No, they are AWS-defined areas that may or may not align with national boundaries.
What is an AWS Edge Location?
A smaller site closer to end users that provides content delivery and edge computing.
Why are edge locations important?
They reduce latency and improve content delivery by being closer to users.
Can AWS services differ by region?
Yes, most AWS services operate regionally and must be selected per region.
What services are global in AWS?
Services like IAM and Route 53, which do not require a region selection.
What are the three main benefits of AWS regions?
- Geographic fault isolation<br></br>2. Governance and legal separation<br></br>3. Performance tuning via location control.
How does AWS ensure fault tolerance between regions?
Regions are designed to be 100% isolated from each other.
What is the region code for Sydney?
ap-southeast-2
What is the region name for ap-southeast-2?
Asia Pacific (Sydney)
Why should you know both region name and region code?
Because the AWS Console uses names and the CLI/API uses codes.
What is an Availability Zone (AZ)?
A physically separate data center within a region used for high availability.
How many AZs are in the Sydney region (ap-southeast-2)?
3 AZs
Why are Availability Zones important?
They allow localized fault isolation within a region.
How can you design resilient solutions using Availability Zones?
Distribute components (e.g., EC2 instances) across multiple AZs to ensure some remain operational during an AZ failure.
Is an Availability Zone the same as a single data center?
No. An AZ may be one or multiple data centers. AWS does not disclose exact structure but guarantees isolation and high-speed redundant networking.
Can services span multiple Availability Zones?
Yes. Many services like VPCs can be deployed across multiple AZs for higher resilience.
What is a globally resilient service?
A service that operates globally with a single database and replicated data across multiple regions. It can tolerate regional failures.
Examples of globally resilient services?
IAM and Route 53.
What is a region resilient service?
A service that operates in a specific region, usually replicating data across multiple AZs in that region.
What happens if an entire region fails for a region resilient service?
The service will become unavailable.
What is an AZ resilient service?
A service deployed in a single AZ. If that AZ fails, the service fails.
