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You need to issue certificates for multiple HTTP load balancer frontends using an on-premises Public Key Infrastructure (PKI) with a certificate authority (CA). The solution must scale effectively while minimizing the operational impact on the on-premises PKI, which involves many manual processes.
What is the recommended approach?
A
Use Certificate Manager to issue Google managed public certificates and configure it at HTTP the load balancers in your infrastructure as code (IaC).
B
Use a subordinate CA in the Google Certificate Authority Service from the on-premises PKI system to issue certificates for the load balancers.
C
Use Certificate Manager to import certificates issued from on-premises PKI and for the frontends. Leverage the gcloud tool for importing.
D
Use the web applications with PKCS12 certificates issued from subordinate CA based on OpenSSL on-premises. Use the gcloud tool for importing. Use the External TCP/UDP Network load balancer instead of an external HTTP Load Balancer.