Google Professional Cloud Network Engineer
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You are setting up a Cross-Cloud Interconnect connection between your Google Cloud organization (deployed in us-east4 in Virginia, USA) and two public cloud service providers (CSP 1 and CSP 2), whose environments are closest to Frankfurt, Germany. You have the option to use colocation facilities in Frankfurt or Munich. Your VPC dynamic routing mode is configured as GLOBAL, and you need 20 Gbps of protected bandwidth with a 99.9% Google Cloud SLA while minimizing costs. What should you do?
Explanation:
The organization requires 20 Gbps of protected bandwidth with a 99.9% SLA. Cross-Cloud Interconnect requires at least two 10 Gbps connections in separate zones within the same metro (Frankfurt) for redundancy. Each CSP needs two 10 Gbps connections (total 20 Gbps per CSP). Option B uses 10 Gbps per connection (valid capacity), ensures redundancy in Frankfurt (same metro), and places the Cloud Router in europe-west3 (Frankfurt), aligning with the interconnect location. Options A and D use invalid bandwidth (20 Gbps per connection) or incorrect Cloud Router regions. Option C splits connections across metros (Frankfurt and Munich), violating SLA requirements. Thus, Option B minimizes costs while meeting SLA and bandwidth needs.