Cloud Infrastructure & Services Flashcards

Which practice supports disaster recovery for a Fabric peer in the cloud?

Answer: Regular snapshots or backups of ledger and state database volumes

Volume snapshots and backups let you restore ledger data after failures or corruption.

What does a Kubernetes liveness probe do for an orderer pod?

Answer: Lets the kubelet restart the container if it becomes unresponsive

A failed liveness probe causes the kubelet to restart the container, restoring unhealthy processes.

Which cloud service category lets developers run Fabric client application code without managing servers?

Answer: Serverless functions such as AWS Lambda or Azure Functions

Serverless platforms execute application code on demand and abstract server management.

In a cloud-hosted Fabric network, what is the purpose of a Certificate Authority (Fabric CA) deployment?

Answer: Issuing and revoking identity certificates for network participants

Fabric CA enrolls identities and issues, renews, and revokes their X.509 certificates.

Which Kubernetes object holds non-sensitive configuration such as core.yaml settings to be mounted into peer pods?

Answer: ConfigMap

ConfigMaps store non-confidential configuration that pods can consume as files or environment variables.

Why is a cloud load balancer commonly placed in front of multiple gateway or peer endpoints used by client apps?

Answer: To distribute client requests and improve availability

Load balancers spread requests across healthy endpoints and route around failures.

Which approach helps control cloud costs for a development blockchain network?

Answer: Scaling down or shutting off non-production environments when idle

Scaling down or stopping idle dev environments reduces compute spend without affecting production.