EX432 Study Guide: Latest [Oct 16, 2026] Realistic Verified EX432 Dumps
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NEW QUESTION # 10
Create a Placement that selects clusters by label (environment=dev)
Answer:
Explanation:
See the solution below in Explanation.
Explanation:
* Create Placement in team-dev:
cat < < 'EOF' | oc apply -f -
apiVersion: cluster.open-cluster-management.io/v1beta1
kind: Placement
metadata:
name: dev-clusters
namespace: team-dev
spec:
predicates:
- requiredClusterSelector:
labelSelector:
matchExpressions:
- key: environment
operator: In
values: ["dev"]
EOF
* Verify placement decisions:
oc get placement -n team-dev
oc get placementdecision -n team-dev
Why this matters:
Placement is used broadly for policy targeting and multi-cluster app rollout .
NEW QUESTION # 11
Create System Policy (Web Console) in RHACS
Task information: Criteria: Image OS = debian:10, Enforcement: Build & Deploy
Answer:
Explanation:
See the solution below in Explanation.
Explanation:
* Open the RHACS (Central) console (typically via a route created by Central).
* Navigate to: Platform Configuration # System Policies .
* Click Create Policy .
* Set the policy criteria:
* Add a rule/condition such as Image OS = debian:10 (as required by the lab)
* Set enforcement to apply at Build & Deploy stages.
* Build prevents images from being admitted into pipeline/registries depending on integration.
* Deploy prevents or flags deployments that violate policy.
* Save the policy.
* (Optional validation) Trigger a test deployment/image that matches debian:10 to confirm alerts
/enforcement behavior.
Why this matters:
* Enforcing at build+deploy catches risky images earlier and prevents policy violations from reaching runtime.
NEW QUESTION # 12
Label managed clusters for placement (environment=dev, region=us-east)
Answer:
Explanation:
See the solution below in Explanation.
Explanation:
* List clusters:
oc get managedcluster
* Label the target cluster(s):
oc label managedcluster cluster-dev environment=dev region=us-east --overwrite
* Verify labels:
oc get managedcluster cluster-dev --show-labels
Why this matters:
Labels drive Placement decisions used by policies and applications.
NEW QUESTION # 13
Import Cluster (Web Console)
Answer:
Explanation:
See the solution below in Explanation.
Explanation:
* In the hub cluster Web Console, go to Infrastructure # Clusters (ACM console navigation).
* Click Import cluster .
* Provide a name (the UI may request details like distribution/credentials depending on flow).
* The wizard will provide a command to run on the managed cluster you want to import.
* Copy that import command.
* Log into the managed cluster (spoke) using oc and run the copied command.
* Back on the hub, wait until the cluster status becomes Ready / Managed .
Why these steps matter:
* Import registers the managed cluster, installs the klusterlet/agent components, and enables policy/app placement management.
NEW QUESTION # 14
Create a Placement that selects clusters in a ManagedClusterSet only
Answer:
Explanation:
See the solution below in Explanation.
Explanation:
* Ensure namespace has the correct ManagedClusterSetBinding.
* Create placement in that namespace; only clusters visible via bound ClusterSet can be selected.
* Verify placementdecision includes only clusters from that set.
This ties together ClusterSets (grouping) and Placement (selection).
NEW QUESTION # 15
Create a "deny" baseline policy: ensure a prohibited Namespace does NOT exist
Answer:
Explanation:
See the solution below in Explanation.
* Create a ConfigurationPolicy using mustnothave complianceType (common policy pattern).
* Bind to placement.
* Confirm noncompliance if the namespace exists; enforce removes it if remediation is enforce.
NEW QUESTION # 16
Install RHACS Operator (Web Console)
Answer:
Explanation:
See the solution below in Explanation.
Explanation:
* In OpenShift Web Console, go to Operators # OperatorHub .
* Search for Advanced Cluster Security .
* Select Red Hat Advanced Cluster Security for Kubernetes (RHACS) .
* Click Install and follow the wizard (namespace/channel per lab).
* After operator installation, create RHACS components (as the hint indicates):
* Install/Deploy Central (the management plane)
* Install/Deploy SecuredCluster (sensor/collector on clusters)
* Confirm operator and pods are running:
* Operators # Installed Operators
* oc get pods -n < rhacs-namespace >
Why this matters:
* RHACS adds container security posture management, vulnerability management, and runtime policy enforcement.
NEW QUESTION # 17
Create a policy to enforce "etcd encryption enabled" and verify compliance status
Answer:
Explanation:
See the solution below in Explanation.
* In ACM console: Governance # Create policy # ETCD Encryption template and set to enforce .
* Target clusters via Placement.
* Confirm policy status: Compliant / NonCompliant per cluster.
NEW QUESTION # 18
Enable and verify ACM "Search" and query for a resource across clusters
Answer:
Explanation:
See the solution below in Explanation.
Explanation:
* Ensure ACM hub components are installed and healthy.
* In ACM console, open Search and query for:
* a namespace name
* a specific deployment
* Validate results show cluster origin and resource details.
Why this matters:
Search is a core ACM operational workflow for multi-cluster visibility.
NEW QUESTION # 19
Create Overlay Directory (Kustomize)
Answer:
Explanation:
See the solution below in Explanation.
Explanation:
* Create overlay structure:
* mkdir -p overlays/production
* Confirm:
* ls -R overlays
Why this matters:
* Kustomize overlays let you maintain base manifests and environment-specific patches (production vs dev, etc.).
NEW QUESTION # 20
Create a Placement that selects clusters by OpenShift version label and exclude a region
Answer:
Explanation:
See the solution below in Explanation.
Explanation:
* Ensure clusters have labels like openshiftVersion=4.18 and region=us-west etc.
* Create placement with matchExpressions (include one label, exclude another):
matchExpressions:
- key: openshiftVersion
operator: In
values: ["4.18"]
- key: region
operator: NotIn
values: ["us-west"]
* Validate PlacementDecision.
NEW QUESTION # 21
Grant Admin Access to User A (ClusterSet admin for production)
Answer:
Explanation:
See the solution below in Explanation.
Explanation:
* Grant the role:
* oc adm policy add-cluster-role-to-user open-cluster-management:managedclusterset:admin:production user-a
* Confirm the binding:
* oc get clusterrolebinding | grep -i production | grep -i user-a
Why this matters:
* ACM provides ClusterSet-scoped roles. This grants admin permissions limited to the production ClusterSet (instead of full cluster-admin).
NEW QUESTION # 22
Create Production ClusterSet
Answer:
Explanation:
See the solution below in Explanation.
Explanation:
* Create the ManagedClusterSet:
* oc create managedclusterset production
* Validate:
* oc get managedclusterset
* oc describe managedclusterset production
Why this matters:
* Separating development and production clusters is common for governance/RBAC isolation.
NEW QUESTION # 23
Create Kustomization File
Answer:
Explanation:
See the solution below in Explanation.
Explanation:
* Create an empty kustomization file:
* touch overlays/production/kustomization.yaml
* Validate it exists:
* ls -l overlays/production
Why this matters:
* kustomization.yaml is the entrypoint file Kustomize uses to build overlays.
NEW QUESTION # 24
Create a PolicySet and include multiple policies for a baseline
Answer:
Explanation:
See the solution below in Explanation.
Explanation:
* Create PolicySet referencing existing policies:
cat < < 'EOF' | oc apply -f -
apiVersion: policy.open-cluster-management.io/v1beta1
kind: PolicySet
metadata:
name: baseline-dev
namespace: team-dev
spec:
policies:
- policy-ensure-audit-namespace
# Add more policies here as you create them
EOF
* Verify:
oc get policyset -n team-dev
Why this matters:
PolicySets group policies to apply/track as a unit-common governance practice.
NEW QUESTION # 25
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