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RedHat EX316 Exam Syllabus Topics:

SectionObjectives
Migration and Operations- Perform VM migration within OpenShift clusters
- Manage VM snapshots and backups
Storage and Networking for Virtual Machines- Configure persistent storage for VMs
- Configure VM networking and connectivity
Virtual Machine Lifecycle Management- Start, stop, and modify VM resources
- Create and manage virtual machines
Troubleshooting and Maintenance- Diagnose VM and cluster issues
- Monitor virtualization workloads
OpenShift Virtualization Installation and Configuration- Deploy OpenShift Virtualization operators and components
- Configure cluster prerequisites for virtualization workloads

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RedHat Red Hat Certified Specialist in OpenShift Virtualization Sample Questions (Q276-Q281):

NEW QUESTION # 276
How do you configure a node to be dedicated for virtual machine workloads?

Answer:

Explanation:
See the Explanation.
Explanation:
1. Add label: oc label node <node> kubevirt.io/schedulable=true
2. Add taint: oc adm taint nodes <node> dedicated=virtualization:NoSchedule
3. Use nodeSelector in VM manifests.
4. Test deployment of VM on this node.
5. Monitor VM pod placement using oc describe vm <vm-name>


NEW QUESTION # 277
How do you allow SSH traffic only from a specific pod to a VM?

Answer:

Explanation:
See the Explanation.
Explanation:
1. Create a policy allowing port 22 from selected pod:
apiVersion: networking.k8s.io/v1
kind: NetworkPolicy
metadata:
name: allow-ssh-from-admin
namespace: default
spec:
podSelector:
matchLabels:
kubevirt.io: virt-launcher
ingress:
- from:
- podSelector:
matchLabels:
role: ssh-admin
ports:
- protocol: TCP
port: 22
policyTypes:
- Ingress
2. Label the source pod: oc label pod admin-pod role=ssh-admin
3. Apply the policy and verify SSH.


NEW QUESTION # 278
How do you resize a VM disk using PVC expansion?

Answer:

Explanation:
See the Explanation.
Explanation:
1. Ensure the storage class supports allowVolumeExpansion.
2. Run:
oc patch pvc vm-root-disk -p '{"spec": {"resources": {"requests": {"storage": "15Gi"}}}}'
3. Restart the VM.
4. Resize partition inside the OS using growpart or resize2fs.
5. Confirm disk size with df -h.


NEW QUESTION # 279
How do you make a VM accessible via a DNS name internally using a service?

Answer:

Explanation:
See the Explanation.
Explanation:
1. Create a ClusterIP service named vm-dns.
2. Kubernetes DNS resolves this as vm-dns.default.svc.cluster.local
3. From other pods or VMs:
ping vm-dns
curl http://vm-dns
4. Use nslookup to confirm resolution.
5. No external DNS config needed.


NEW QUESTION # 280
How do you view logs for a specific service (e.g., sshd)?

Answer:

Explanation:
See the Explanation.
Explanation:
1. Inside VM, run:
sudo journalctl -u
sshd
2. Use --since and --until for time
ranges: sudo journalctl -u sshd --since
"1 hour ago"
3. Use q to quit viewer.
4. Shows recent activity/errors.
5. Useful for debugging.


NEW QUESTION # 281
......

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