CBDH Cloud Infrastructure & Services 5

Question 1

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

Accepted Answer

Regular snapshots or backups of ledger and state database volumes

Answer

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

Question 2

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

Accepted Answer

Lets the kubelet restart the container if it becomes unresponsive

Answer

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

Question 3

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

Accepted Answer

Serverless functions such as AWS Lambda or Azure Functions

Answer

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

Question 4

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

Accepted Answer

Issuing and revoking identity certificates for network participants

Answer

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

Question 5

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

Accepted Answer

ConfigMap

Answer

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

CBDH - Certified Blockchain Developer Hyperledger Practice Test