50 VMware Telco Cloud Automation Skills Practice Questions: Question Bank 2025

An operator wants to understand which high-level capability VMware Telco Cloud Automation (TCA) primarily provides in a telco cloud. Which statement best describes TCA's main role?

A VNF package is imported into TCA, but instantiation fails immediately with a validation error referencing missing descriptor information. What is the most likely missing or incorrect artifact in the onboarded package?

A designer is creating a network service that chains two network functions and wants the service to be reusable across different sites with minimal changes. Which approach is the best practice for service design?

Operations reports that a CNF instance is healthy at the Kubernetes level, but the network service in TCA shows 'Degraded'. What is the best first step to narrow down the issue?

A CNF vendor provides a Helm chart and container images. The operator wants to onboard this CNF into TCA with a consistent lifecycle (instantiate, scale, heal, terminate). Which onboarding method aligns best with this requirement?

A service template deploys a firewall CNF followed by a load balancer CNF. The load balancer must not deploy until the firewall is fully configured and its management endpoint is reachable. How should the designer enforce this behavior?

A platform team wants to separate responsibilities: one group manages infrastructure resources while another group only instantiates services and network functions. Which TCA capability best supports this separation?

After a scale-out operation, a CNF’s new pods are running but cannot communicate over the data network. Existing pods still pass traffic. Which is the most likely cause in a telco CNF environment?

A CNF requires two networks: a management network and a high-throughput data network using SR-IOV. The operator wants TCA to ensure the CNF pods land only on nodes that can provide SR-IOV resources. Which design is most appropriate?

A VNF instantiation repeatedly fails at the step where it should attach to an external network. The infrastructure is healthy, but only this VNF fails. What is the most likely onboarding/configuration issue to check first?

An administrator is asked to explain why VMware Telco Cloud Automation (TCA) uses an external Kubernetes cluster in its architecture. What is the primary reason for this design?

A CNF package fails onboarding with a message indicating missing container image references during validation. Which issue is the most likely root cause?

A service designer wants to create a single service that can be instantiated in multiple sites with different IP pools and VLAN IDs, without changing the service template each time. What is the recommended approach in TCA?

After onboarding a VNF package, instantiation fails with an error indicating that the target cloud does not support the requested compute flavor. What should the administrator do first?

A new operations engineer needs to understand which component in TCA is responsible for executing lifecycle workflows (for example, instantiate, scale, heal) in an automated, repeatable way. Which component best fits this description?

A service composed of multiple network functions must ensure that the user plane function (UPF) is instantiated only after the required data network connectivity is ready, and it must fail fast if the prerequisite is not met. Which service design technique best meets this requirement?

A CNF is running but is not reachable from other functions. Kubernetes shows the pods are Ready, but service-to-service traffic fails. Which troubleshooting step is most appropriate to perform first in a TCA-managed environment?

A telecom operator wants to reduce the risk of service impact when applying configuration changes to a running network service instance. Which operational best practice should be recommended?

A multi-site deployment requires placing certain service components in Site A (for regulatory reasons) while allowing other components to be dynamically placed in any site with sufficient capacity. What is the best way to achieve this in service orchestration?

During a VNF scale-out operation, the orchestrator reports success, but monitoring shows the new VNF instance is not receiving traffic. The data plane uses a load-balancing function that should update its member list automatically. What is the most likely cause?

An operations team wants to give a tenant team access to design and deploy services in VMware Telco Cloud Automation (TCA), but must prevent them from onboarding or modifying VNF/CNF packages. Which approach best meets this requirement?

A VNF package onboards successfully, but instantiation fails because the VNF expects a network name that does not exist in the target environment. What is the MOST likely missing step before instantiation?

A service designer needs to parameterize a service so that each instantiation can choose a different VLAN/VXLAN-backed network without editing the service definition each time. Which design approach is MOST appropriate?

A CNF package onboards, but deployment fails with errors indicating the Kubernetes cluster is unreachable from TCA. The cluster is healthy and reachable from an admin workstation. What is the BEST next troubleshooting step?

A telecom operator wants to reuse the same network function definition across multiple services while enforcing consistent day-0 configuration parameters. Which approach is MOST aligned with good TCA service modeling practices?

A VNF is deployed successfully, but its management interface is not reachable. Logs show the VNF VM is attached to the correct port group, yet the VM has no IP address. Which is the MOST likely cause?

A service instantiation is stuck in an in-progress state. The underlying VIM shows all VMs created, but TCA still reports the service as 'Deploying'. What is the BEST next action to determine the blocker?

An operator plans to onboard a third-party VNF package. They want to minimize deployment failures by validating descriptor compatibility and required artifacts before making it available to tenants. Which onboarding best practice should be applied FIRST?

A service includes two network functions that must be deployed in different zones (for example, edge and core) due to latency and data locality requirements. Which design capability is MOST appropriate to satisfy this requirement?

After onboarding a CNF, day-2 scaling operations fail with authorization errors when attempting to adjust replicas. The Kubernetes cluster uses RBAC and the CNF deployed successfully initially. What is the MOST likely explanation?

An operator wants service designers to create Network Services in Telco Cloud Automation (TCA) without having direct credentials to the underlying Kubernetes clusters hosting the CNFs. Which approach best aligns with separation of duties and least privilege?

A VNF package fails onboarding into TCA with an error indicating the descriptor file cannot be parsed. The team suspects a packaging issue rather than an orchestration issue. What is the MOST likely cause?

A service designer needs to reuse the same CNF multiple times within different services but with environment-specific values (for example, image registry, DNS, and NTP). What is the recommended way to achieve this in TCA service design?

Operations reports that a newly instantiated service shows as "Degraded" in TCA even though the deployment completed. Which first check is MOST appropriate to confirm whether this is a health/telemetry issue rather than a deployment failure?

A telecom operator wants to onboard a CNF that includes multiple Helm charts and requires a specific installation order. What TCA capability best supports this requirement during onboarding and instantiation?

A service requires two network functions to be instantiated on different sites for resilience, but must remain part of the same end-to-end service. Which design approach is MOST appropriate in TCA?

A CNF instantiation fails in TCA with an error indicating it cannot pull container images from the registry. The registry is reachable from the cluster network. What is the MOST likely missing configuration?

An operator wants to enforce consistent governance so that only approved network function packages can be used in production service instantiations. Which approach is MOST appropriate within TCA operating model?

A multi-component CNF instantiation intermittently fails during one component deployment, then succeeds on retry. Logs show timeouts waiting for Kubernetes resources to become Ready. Which action is MOST effective to improve reliability without masking real failures?

A service designer needs to create a Day-2 operation that scales out a CNF component and then runs a configuration step only after the new pods are healthy. Which design pattern best achieves this in TCA?

An administrator wants to ensure that only approved VNF/KNF packages are available for deployment in VMware Telco Cloud Automation (TCA). Which approach best supports this requirement?

A service designer is creating a network service in TCA and wants to minimize repeated configuration by reusing the same configuration set across multiple service instances. What is the recommended design approach?

A tenant reports they cannot see a particular service offering in the self-service catalog, even though the service exists and has been tested by the admin team. Which is the MOST likely cause?

A VNF instantiation fails. The workflow shows that image upload to the VIM succeeded, but the deployment fails when creating the VM due to insufficient resources in the target cluster. What is the BEST next step to prevent future failures of this type?

Your organization wants to integrate TCA with an external IP Address Management (IPAM) system so that network functions receive IP allocations consistently across multiple sites. Which design pattern is MOST appropriate?

A CNF is onboarded as a Helm-based package. During instantiation, Kubernetes returns an error indicating that the target namespace does not exist. What is the BEST corrective action?

A service uses multiple network functions where one component must always be instantiated before the others because it provides foundational connectivity. In TCA service design, what is the MOST appropriate way to enforce this behavior?

After onboarding a VNF package, instantiations fail because the expected Day-0 inputs are not being prompted in the deployment form. What is the MOST likely reason?

A telco operator needs to support multi-site deployments where the same service can be instantiated on different NFVI sites, but with site-specific differences such as VLAN/segment IDs and local DNS settings. Which approach BEST balances reuse and site customization in TCA?

During troubleshooting, you notice that lifecycle operations intermittently fail for services deployed across multiple sites. Failures correlate with temporary loss of connectivity between TCA and a remote VIM/Kubernetes cluster. Which design choice MOST improves resiliency for these intermittent network disruptions?