Exam Professional Cloud Architect topic 1 question 195 discussion

Actual exam question from Google's Professional Cloud Architect

Question #: 195
Topic #: 1

[All Professional Cloud Architect Questions]

You are deploying an application to Google Cloud. The application is part of a system. The application in Google Cloud must communicate over a private network with applications in a non-Google Cloud environment. The expected average throughput is 200 kbps. The business requires:

• 99.99% system availability
• cost optimization

You need to design the connectivity between the locations to meet the business requirements. What should you provision?

A. An HA Cloud VPN gateway connected with two tunnels to an on-premises VPN gateway.
B. A Classic Cloud VPN gateway connected with two tunnels to an on-premises VPN gateway.
C. Two HA Cloud VPN gateways connected to two on-premises VPN gateways. Configure each HA Cloud VPN gateway to have two tunnels, each connected to different on-premises VPN gateways.
D. A Classic Cloud VPN gateway connected with one tunnel to an on-premises VPN gateway.

Show Suggested Answer

Suggested Answer: A 🗳️

by thisisbob at Sept. 24, 2023, 1:12 p.m.

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e5019c6

Highly Voted 11 months, 3 weeks ago

Yep, this question is a duplicate of #191.

upvoted 8 times

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TopTalk

Highly Voted 1 year, 2 months ago

Selected Answer: A

HA VPN supports two tunnels to achieve 99.99%. Classic VPN does not. Any more than 2 tunnels is excessive cost.

upvoted 6 times

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frank_tsai_tech

Most Recent 3 months ago

Selected Answer: A

Explanation: • High Availability (HA): HA Cloud VPN provides an SLA of up to 99.99% when properly configured with redundant tunnels. This meets the requirement for nearly 100% system availability. • Cost Optimization: For low throughput (200 kbps is minimal), one HA VPN gateway with two tunnels is both cost-effective and sufficient. Using two separate gateways (as in option C) would add unnecessary cost. • Simplicity: An HA VPN gateway with two tunnels is simpler to manage than deploying multiple VPN gateways. Thus, option A meets the business requirements while optimizing cost and availability.

upvoted 1 times

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ryaryarya

5 months, 1 week ago

Selected Answer: C

With A, there is a single point of failure. What if that single VPN gateway in the on-prem environment goes down? There goes your 99.99% system availability, which is the first business requirement.

upvoted 1 times

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