Exam Professional Cloud Network Engineer topic 1 question 216 discussion

Actual exam question from Google's Professional Cloud Network Engineer

Question #: 216
Topic #: 1

[All Professional Cloud Network Engineer Questions]

You are configuring a Cross-Cloud Interconnect connection for your Google Cloud organization with two public cloud service providers (CSPs)–CSP 1 and CSP 2. The CSP 1 and CSP 2 environments are closest to Frankfurt, Germany. You can choose between two common colocation locations, Frankfurt and Munich. Your organization's Google Cloud infrastructure is deployed in the North American region, us-east4, which is located in Virginia, USA. The VPC dynamic routing mode has been set to GLOBAL. Your organization requires 20 Gbps of protected bandwidth with a 99.9% Google Cloud SLA. You want to minimize costs where possible. What should you do?

A. 1. Create two Cross-Cloud Interconnect connections to CSP 1, with 40 Gbps of total bandwidth (20 Gbps in zone 1 and 20 Gbps in zone 2) in a common co-location facility located in Frankfurt, Germany.
2. Create two Cross-Cloud Interconnect connections to CSP 2, with 40 Gbps of total bandwidth (20 Gbps in zone 1 and 20 Gbps in zone 2) in a common co-location facility located in Frankfurt, Germany.
3. Create a Cloud Router in europe-west3 (Frankfurt), and configure two VLAN attachments for CSP 1 and two VLAN attachments for CSP 2.
B. 1. Create two Cross-Cloud Interconnect connections to CSP 1, with 20 Gbps of total bandwidth (10 Gbps in zone 1 and 10 Gbps in zone 2) in a common co-location facility located in Frankfurt, Germany.
2. Create two Cross-Cloud Interconnect connections to CSP 2, with 20 Gbps of total bandwidth (10 Gbps in zone 1 and 10 Gbps in zone 2) in a common co-location facility located in Frankfurt, Germany.
3. Create a Cloud Router in europe-west3 (Frankfurt), and configure two VLAN attachments for CSP 1 and two VLAN attachments for CSP 2.
C. 1. Create two Cross-Cloud Interconnect connections to CSP 1, with 40 Gbps of total bandwidth (20 Gbps in zone 1) in a common co-location facility located in Frankfurt, Germany and (20 Gbps in zone 2) in a common co-location facility located in Munich, Germany.
2. Create two Cross-Cloud Interconnect connections to CSP 2, with 40 Gbps of total bandwidth (20 Gbps in zone 1) in a common co-location facility located in Frankfurt, Germany and (20 Gbps in zone 2) in a common co-location facility located in Munich, Germany.
3. Create a Cloud Router in europe-west3 (Frankfurt), and configure two VLAN attachments for CSP 1 and two VLAN attachments for CSP 2.
D. 1. Create two Cross-Cloud Interconnect connections to CSP 1, with 40 Gbps of total bandwidth (20 Gbps in zone 1 and 20 Gbps in zone 2) in a common co-location facility located in Frankfurt, Germany.
2. Create two Cross-Cloud Interconnect connections to CSP 2, with 40 Gbps of total bandwidth (20 Gbps in zone 1 and 20 Gbps in zone 2) in a common co-location facility located in Frankfurt, Germany.
3. Create a Cloud Router in us-east4 (Ashburn, Virginia, USA), and configure two VLAN attachments for CSP 1 and two VLAN attachments for CSP 2.

Show Suggested Answer

Suggested Answer: B 🗳️

by 1f01b87 at March 15, 2025, 7:53 p.m.

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n2183712847

2 weeks, 5 days ago

Selected Answer: B

20gb & 20gb

upvoted 2 times

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mohitms1996

1 month, 1 week ago

Selected Answer: B

Bandwidth + Redundancy: You need 20 Gbps of protected bandwidth, which means two 10 Gbps connections (one per zone) per CSP is sufficient when protected with redundancy. Google Cloud achieves 99.9% SLA when connections are deployed in redundant pairs (HA) across different edge availability zones. Location: Both CSP 1 and CSP 2 are closest to Frankfurt → no need to use Munich, which would increase complexity and cost. Though your GCP infra is in us-east4 (Virginia), your Cloud Router must be located in the same region as the VLAN attachments (i.e., europe-west3, Frankfurt), which is where the interconnects terminate. Routing mode: With Global dynamic routing, prefixes learned from europe-west3 will be available in us-east4, so you don’t need to place the Cloud Router in us-east4 (which would actually not work due to region mismatch).

upvoted 2 times

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Gwendal

1 month, 2 weeks ago

Selected Answer: A

https://cloud.google.com/network-connectivity/docs/interconnect/concepts/cci-overview#minimum-requirements

upvoted 1 times

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1f01b87

2 months ago

Selected Answer: A

Option A is the correct answer