A service provider is redesigning its service delivery platform. They currently run each network function on a dedicated bare-metal appliance. They need to reduce hardware costs and increase agility, but some functions require dedicated CPU resources for consistent performance. Which hosting model best balances these needs?

Use a PaaS platform for all network functions.

Move all functions to containers without any resource reservations.

Keep all functions on bare metal to guarantee performance.

Run the functions as VMs on shared NFVI with CPU pinning for performance-critical VNFs.

A VNF instance is experiencing performance degradation due to CPU contention on the host. The VNFM has been asked to scale the VNF to maintain performance. The VNF supports both vertical scaling (adding vCPUs) and horizontal scaling (adding instances). The VNF is stateful and uses a shared storage. Which scaling approach is most appropriate?

Terminate the VNF and instantiate a new one with more resources.

Perform horizontal scaling by adding a new VNF instance and load-balancing traffic between the instances.

Migrate the VNF to a different host using live migration.

Perform vertical scaling by adding more vCPUs to the existing instance.

A service provider is deploying a virtualized vRouter as a VNF on an NFVI compute node. The vRouter performs heavy packet forwarding and must achieve line-rate throughput. The administrator notices that the VNF performance is inconsistent and suspects that the hypervisor scheduler is causing latency. Which configuration should be applied to the NFVI compute node to most directly address this issue?

Configure the vRouter VNF to use a larger virtual disk for packet buffers

Place the vRouter VNF on a compute node with more storage capacity

Increase the memory allocation for the vRouter VNF to reduce swapping

Enable CPU pinning for the vRouter's vCPUs to dedicated physical cores

CiscoCertified Network Professional Service Provider

Domain 1Objective 3

1.3 Describe Service Provider Virtualization 350-501 Practice Questions (Page 5)

Part of the Architecture domain, which accounts for 15% of the 350-501 exam. Cisco does not publish an official question count, but from its 120-minute exam (~50–80 total, ~8–12 in this domain), expect 1–2 from this objective — we provide 37 practice questions to prepare you well beyond it. (estimate)

37questions here

8free pages

8concepts

15%of the exam

Questions 21–25

21application · medium
A service provider is redesigning its service delivery platform. They currently run each network function on a dedicated bare-metal appliance. They need to reduce hardware costs and increase agility, but some functions require dedicated CPU resources for consistent performance. Which hosting model best balances these needs?
Select an answer first
22expert · hard
A VNF instance is experiencing performance degradation due to CPU contention on the host. The VNFM has been asked to scale the VNF to maintain performance. The VNF supports both vertical scaling (adding vCPUs) and horizontal scaling (adding instances). The VNF is stateful and uses a shared storage. Which scaling approach is most appropriate?
Select an answer first
23application · medium
A service provider is deploying a virtualized vRouter as a VNF on an NFVI compute node. The vRouter performs heavy packet forwarding and must achieve line-rate throughput. The administrator notices that the VNF performance is inconsistent and suspects that the hypervisor scheduler is causing latency. Which configuration should be applied to the NFVI compute node to most directly address this issue?
Select an answer first
24application · medium
A service provider is comparing hosting models for a new network function that must be portable across different cloud environments and have minimal overhead. The function is stateless and can be scaled horizontally. Which hosting model is most appropriate?
Select an answer first
25foundation · easy
In Kubernetes, which object provides a stable network endpoint and load balancing for a set of pods?
Select an answer first

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1.3 Describe Service Provider Virtualization 350-501 Practice Questions (Page 5)

Questions 21–25

A service provider is comparing hosting models for a new network function that must be portable across different cloud environments and have minimal overhead. The function is stateless and can be scaled horizontally. Which hosting model is most appropriate?

In Kubernetes, which object provides a stable network endpoint and load balancing for a set of pods?

Keep studying — Architecture