RedHat EX288 Practice Exams
Last updated on Oct 22,2026- Exam Code: EX288
- Exam Name: Red Hat Certified OpenShift Application Developer exam
- Certification Provider: RedHat
- Latest update: Oct 22,2026
Question #101
How can you expose a deployment to external traffic using the oc command?
- A . oc expose service <name>
- B . oc expose pod <name>
- C . oc expose deployment <name>
- D . oc route add <name>
Correct Answer: C
C
Explanation:
The oc expose deployment <name> command creates a service and optionally a route to expose the deployment to external traffic.
C
Explanation:
The oc expose deployment <name> command creates a service and optionally a route to expose the deployment to external traffic.
Question #102
What is the purpose of the patchesStrategicMerge field in Kustomize?
- A . To apply selective updates to resources
- B . To merge ConfigMaps dynamically
- C . To generate new resources
- D . To transform Kubernetes objects
Correct Answer: A
A
Explanation:
The patchesStrategicMerge field applies selective updates to existing Kubernetes resources, providing a flexible customization mechanism.
A
Explanation:
The patchesStrategicMerge field applies selective updates to existing Kubernetes resources, providing a flexible customization mechanism.
Question #103
What is the purpose of the BuildConfig strategy field?
- A . To define the deployment strategy
- B . To specify the build strategy (e.g., S2I, Docker)
- C . To set resource limits for builds
- D . To configure post-build hooks
Correct Answer: B
B
Explanation:
The strategy field specifies the build strategy, such as Docker or S2I, determining how the image is created.
B
Explanation:
The strategy field specifies the build strategy, such as Docker or S2I, determining how the image is created.
Question #104
How can you manage an application deployment using the OpenShift web console? (Choose two.)
- A . Modify environment variables
- B . Scale replicas up or down
- C . Create custom monitoring agents
- D . Rebuild the application image
Correct Answer: A, B
A, B
Explanation:
The web console allows real-time scaling and environment variable management, making it convenient for managing deployments.
A, B
Explanation:
The web console allows real-time scaling and environment variable management, making it convenient for managing deployments.
Question #105
Which command creates a new project in OpenShift?
- A . oc create project <name>
- B . oc new-project <name>
- C . oc create ns <name>
- D . kubectl create namespace <name>
Correct Answer: B
B
Explanation:
The oc new-project command creates a new project in OpenShift and switches to it. It sets up the environment automatically, making it the preferred command for project creation.
B
Explanation:
The oc new-project command creates a new project in OpenShift and switches to it. It sets up the environment automatically, making it the preferred command for project creation.
Question #106
Which Kustomize field specifies the directory containing base configurations?
- A . resources
- B . bases
- C . overlays
- D . paths
Correct Answer: B
B
Explanation:
The bases field in kustomization.yaml specifies the directory containing base configurations to be customized in overlays.
B
Explanation:
The bases field in kustomization.yaml specifies the directory containing base configurations to be customized in overlays.
Question #107
What is the purpose of Horizontal Pod Autoscaler (HPA) in OpenShift? (Choose two.)
- A . Scale pods based on CPU usage
- B . Scale pods based on memory usage
- C . Manage persistent volumes
- D . Monitor pod health
Correct Answer: A, B
A, B
Explanation:
HPA dynamically adjusts the number of pods based on resource usage such as CPU and memory, maintaining application performance during fluctuating workloads.
A, B
Explanation:
HPA dynamically adjusts the number of pods based on resource usage such as CPU and memory, maintaining application performance during fluctuating workloads.
Question #108
Which Kustomize feature allows creating environment-specific customizations? (Choose two.)
- A . Overlays
- B . Bases
- C . Templates
- D . Profiles
Correct Answer: A, B
A, B
Explanation:
Bases define the common configuration, while overlays provide environment-specific customizations, allowing flexible application deployment.
A, B
Explanation:
Bases define the common configuration, while overlays provide environment-specific customizations, allowing flexible application deployment.
Question #109
Which of the following ensures secure image pulling from OpenShift’s internal registry? (Choose two.)
- A . Assigning pull secrets to service accounts
- B . Configuring resource quotas
- C . Creating ImageStreams
- D . Setting proper access controls
Correct Answer: A, D
A, D
Explanation:
Pull secrets and access controls ensure secure image pulling from the internal registry, safeguarding private images against unauthorized access.
A, D
Explanation:
Pull secrets and access controls ensure secure image pulling from the internal registry, safeguarding private images against unauthorized access.
Question #110
How do you push a local image to the OpenShift internal registry?
- A . Use docker push
- B . Use oc tag
- C . Use oc image push
- D . Use podman push
Correct Answer: D
D
Explanation:
The podman push command pushes a local container image to the OpenShift internal registry, provided the registry login credentials are configured.
D
Explanation:
The podman push command pushes a local container image to the OpenShift internal registry, provided the registry login credentials are configured.