1.3 Describe Service Provider Virtualization 350-501 Practice Questions (Page 6)

Questions 26–30

1. 26expert · hard

   A service provider is evaluating whether to deploy a network function as a container or a VM. The function is a stateful firewall that requires persistent state and must be highly available. The team is concerned about the portability of the function across different environments. Which consideration is most important when choosing between containers and VMs for this function?

   • AStateful functions require persistent storage, which must be managed differently in containers than in VMs
   • BVMs cannot be highly available
   • CContainers cannot persist state
   • DContainers are always more portable than VMs
   Reveal Solution Discussion Select an answer first
2. 27foundation · easy

   Which set of resources forms the foundation of NFV infrastructure (NFVI) that hosts virtualized network functions?

   • AManagement, orchestration, and service assurance
   • BCompute, storage, and network resources
   • CHypervisor, virtual machines, and virtual switches
   • DVNFs, PNFs, and service chains
   Reveal Solution Discussion Select an answer first
4. 28foundation · easy

   In an NFV environment, what is the primary role of the virtualization layer (hypervisor)?

   • ATo replace physical network functions with software-based equivalents
   • BTo provide the management and orchestration functions for VNF lifecycle operations
   • CTo abstract physical compute, storage, and network resources and present them as logical resources to VNFs
   • DTo interconnect VNFs and physical network functions in a service chain
   Reveal Solution Discussion Select an answer first
5. 29expert · hard

   A service provider is deploying a CNF that consists of a data plane function requiring low latency and a control plane function that is less latency-sensitive. The data plane function needs to be placed on specific nodes with SR-IOV-capable NICs. The control plane can run anywhere. Which Kubernetes feature should be used to ensure the data plane function is scheduled on the appropriate nodes?

   • AUse a StatefulSet with persistent volumes for the data plane.
   • BNode affinity rules and taints/tolerations to restrict the data plane pods to specific nodes.
   • CUse a Service of type LoadBalancer to expose the data plane.
   • DUse a DaemonSet to run the data plane on every node.
   Reveal Solution Discussion Select an answer first
6. 30expert · hard

   A service provider is deciding how to host a new network function. The function has variable traffic and requires rapid scaling. The team is considering containers and VMs. The security team requires strong isolation between the function and other workloads on the same host. Which hosting model should be chosen to best balance scaling and isolation?

   • AContainers
   • BBare metal
   • CPaaS
   • DVMs
   Reveal Solution Discussion Select an answer first