Exam Cloud Digital Leader topic 1 question 6 discussion

I chose B since it guarantees a latency of ~10 milliseconds is maintained, well also giving the redundancy of multi-zone. If it was D, we could not guarantee 10 milliseconds between the different regions.

Multi zone is also redundant within the region and it provides the lowest latency.

Explanation: Low-latency communication (<10ms) requires geographic proximity between virtual machines. Using different zones within a single region ensures high availability and redundancy while keeping the network latency minimal. Google Cloud's internal network allows low-latency communication between zones in the same region, making it the optimal choice. Why the other options are incorrect? ❌ A. In a single zone within a single region – No redundancy; failure in that zone could take down the application. ❌ C. In multiple regions, using one zone per region – Inter-region communication typically has higher latency (>10ms), making it unsuitable. ❌ D. In multiple regions, using multiple zones per region – Adds redundancy but increases latency and complexity, making it inefficient for fast communication.

Redundancy + Low latency

To ensure redundancy and extremely fast communication (less than 10 milliseconds) between VMs, place them in different zones within a single region. This setup maintains low latency while providing fault tolerance.

Gonna go with D even though C is also valid because distributing across regions and zones is recommended.

Answer is B

Answer B

Options A, C, and D involve spreading the virtual machines across different configurations, such as single zone, multiple regions with one zone per region, or multiple zones per region. While these options may offer redundancy to some extent, they might not guarantee the desired extremely fast communication due to potential increased latency between different regions or zones. Therefore B

B is correct

B is correct

https://cloud.google.com/compute/docs/regions-zones Depending on how widely you want to distribute your resources, create instances across multiple zones in multiple regions for redundancy.

Answer correct is B accordind to 'Decreased network latency To decrease network latency, you might want to choose a region or zone that is close to your point of service. For example, if you mostly have customers on the East Coast of the US, then you might want to choose a primary region and zone that is close to that area and a backup region and zone that is also close by.' Section at https://cloud.google.com/compute/docs/regions-zones/

In different zones within a single region

AnswerD accordind to 'Identifying a region or zone' Section at https://cloud.google.com/compute/docs/regions-zones/

D is correct one

D is correct because guarantee slow latency between regions and zones in case of any zone failed, yet have slow latency between regions