What is a key role of an API gateway in a cloud native architecture?

To provide a single entry point for external clients to access multiple backend APIs

To manage database connections for backend services

To store API request and response payloads for auditing

To replace the need for container orchestration

In a Kubernetes cluster, a service needs to be discoverable by other services in the same namespace. The service has a stable name 'database'. How can another service in the same namespace access it?

By using the DNS name 'database'

By using the service's cluster IP directly, which is static

By querying the Kubernetes API for the service's endpoints

By using the pod IP of the service's pods

In a cloud native environment, what is the primary purpose of the application delivery layer?

To manage the underlying physical servers and storage

To compile application source code into executable binaries

To store application configuration and secrets

To handle the routing, exposure, and management of traffic to applications

Why is monitoring the error rate important for application delivery?

It indicates the number of users currently accessing the application

It helps identify issues with the application or infrastructure that affect users

It tracks the amount of data transferred

It measures the speed of the network connection

A team is planning a blue-green deployment for a critical application. They want to minimize downtime and be able to roll back quickly. They have a database that is shared between the two environments. What is a potential issue they need to address?

The blue and green environments will have different IP addresses

The database schema may not be compatible with both versions

The blue environment will be idle during the deployment

The load balancer will not be able to switch traffic quickly

Kubernetes and Cloud Native Associate (KCNA)

Domain 3Objective 1

Application Delivery KCNA Practice Questions (Page 1)

Part of the Cloud Native Application Delivery domain, which accounts for 16% of the KCNA exam. Linux Foundation does not publish an official question count, but from its 90-minute exam (~35–60 total, ~6–10 in this domain), expect 2–3 from this objective — we provide 32 practice questions to prepare you well beyond it. (estimate)

32questions here

7free pages

8concepts

16%of the exam

Questions 1–5

1foundation · easy
What is a key role of an API gateway in a cloud native architecture?
Select an answer first
2application · medium
In a Kubernetes cluster, a service needs to be discoverable by other services in the same namespace. The service has a stable name 'database'. How can another service in the same namespace access it?
Select an answer first
3foundation · easy
In a cloud native environment, what is the primary purpose of the application delivery layer?
Select an answer first
4foundation · easy
Why is monitoring the error rate important for application delivery?
Select an answer first
5expert · hard
A team is planning a blue-green deployment for a critical application. They want to minimize downtime and be able to roll back quickly. They have a database that is shared between the two environments. What is a potential issue they need to address?
Select an answer first

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