Cloud Infrastructure & Services Flashcards

Why should TLS be enabled for peer and orderer communication in a cloud environment?

Answer: To encrypt traffic and authenticate endpoints on shared networks

TLS protects data in transit and verifies endpoint identities, which is crucial on shared cloud networks.

Which storage type is generally most appropriate for a peer's LevelDB or CouchDB data in the cloud?

Answer: Block storage volumes (for example EBS or managed disks) with persistence

Persistent block storage offers the low-latency, durable disk semantics that databases require.

What does Infrastructure as Code (for example Terraform) bring to blockchain network provisioning?

Answer: Repeatable, version-controlled infrastructure definitions

IaC lets teams declare infrastructure in code, review it, and recreate environments reliably.

Which monitoring approach is natively supported by Fabric peers and orderers for exposing metrics to a cloud monitoring stack?

Answer: Prometheus-compatible metrics endpoint

Fabric nodes can expose an operations endpoint with Prometheus-format metrics, plus StatsD as an alternative.

A CouchDB state database pod keeps restarting under load. Which Kubernetes setting most directly prevents the node from OOM-killing it unexpectedly?

Answer: Setting appropriate memory requests and limits

Properly sized memory requests and limits help the scheduler place the pod and avoid unexpected OOM kills.

Which role-based mechanism in Kubernetes controls which users or service accounts can modify blockchain deployments?

Answer: RBAC

Kubernetes RBAC grants permissions to users and service accounts for cluster resources.

What is a key benefit of running blockchain nodes across multiple cloud providers for a consortium?

Answer: It reduces dependence on a single provider and improves resilience

Multi-cloud deployments avoid single-provider lock-in and lower the impact of a provider outage.