What should you first?

You want to use Partner Interconnect to connect your on-premises network with your VPC. You already have an Interconnect partner.

What should you first?
A . Log in to your partner’s portal and request the VLAN attachment there.
B . Ask your Interconnect partner to provision a physical connection to Google.
C . Create a Partner Interconnect type VLAN attachment in the GCP Console and retrieve the pairing key.
D . Run gcloud compute interconnect attachments partner update <attachment> / — region <region> –admin-enabled.

Answer: B

Explanation:

https://cloud.google.com/network-connectivity/docs/interconnect/concepts/partner-overview?hl=En#provisioning "To provision a Partner Interconnect connection with a service provider, you start by connecting your on-premises network to a supported service provider. Work with the service provider to establish connectivity.