Exam Professional Cloud DevOps Engineer topic 1 question 165 discussion

https://cloud.google.com/compute/docs/general-purpose-machines#n2-standard "Neither additional virtual network interfaces (vNICs) nor additional IP addresses per vNIC increase ingress or egress bandwidth for a VM. For example, a C3 VM with 22 vCPUs is limited to 23 Gbps total egress bandwidth. If you configure the C3 VM with two vNICs, the VM is still limited to 23 Gbps total egress bandwidth, not 23 Gbps bandwidth per vNIC." https://cloud.google.com/compute/docs/network-bandwidth#vm-out-baseline:~:text=Neither%20additional%20virtual,bandwidth%20per%20vNIC.

Choose C. Changing the machine type to a higher-capacity will increases the available resources, including CPU, memory, and potentially network bandwidth. Options A and B are not directly related to improving network throughput for the existing VMs. Adding additional network interface controllers (NICs) (Option A) may not necessarily address network throughput limitations, and deploying a Cloud NAT gateway (Option B) is more relevant for outbound internet traffic rather than internal network communication. Option D (Deploy the Ops Agent to export additional monitoring metrics) is not directly related to improving network throughput. While it can provide additional monitoring metrics, addressing the reported slow download issue is better achieved by adjusting the resources allocated to the VMs.

Vote C

https://cloud.google.com/compute/docs/network-bandwidth

Network throughput performance is often associated with the compute power of the virtual machines. Upgrading your VM instance type to one with more CPU and memory resources, like n2-standard-8, can significantly improve the network performance

C Increasing the VM from standard-2 to standard-8 will increase egress. The VM is serving files (egress) so will benefit from larger egress

Answer D seems correct. https://cloud.google.com/blog/products/gcp/5-steps-to-better-gcp-network-performance