KCNA Cloud Native Patterns 2

Question 1

Which cloud native pattern ensures that a service remains available even when one of its dependencies is experiencing failures?

Accepted Answer

Circuit Breaker

Answer

The Circuit Breaker pattern prevents cascading failures by stopping requests to a failing dependency and allowing it time to recover.

Question 2

In the Sidecar pattern, what is the relationship between the sidecar container and the main application container?

Accepted Answer

They share the same Pod and network namespace

Answer

Sidecar containers in a Pod share the same network namespace and can communicate over localhost with the main container.

Question 3

What problem does the Strangler Fig pattern primarily address in cloud native migrations?

Accepted Answer

Incrementally replacing a legacy monolith with microservices

Answer

Strangler Fig allows teams to gradually migrate a monolith by routing new features to microservices while the legacy system remains operational.

Question 4

Which pattern uses a single entry point to handle cross-cutting concerns like authentication and rate limiting before forwarding requests to backend services?

Accepted Answer

API Gateway

Answer

An API Gateway acts as a single entry point that enforces cross-cutting concerns such as authentication, logging, and rate limiting.

Question 5

In event-driven architecture, what is the role of an event broker like Apache Kafka?

Accepted Answer

Decouples producers and consumers by persisting and distributing events

Answer

An event broker like Kafka decouples producers from consumers by durably storing events and allowing consumers to process them independently.

(KCNA) Kubernetes and Cloud Native Associate Practice Test

(KCNA) Kubernetes and Cloud Native Associate Practice Test

KCNA Cloud Native Patterns 2