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PROFESSIONAL-DATA-ENGINEER · Question #162

Your company maintains a hybrid deployment with GCP, where analytics are performed on your anonymized customer data. The data are imported to Cloud Storage from your data center through parallel…

The correct answer is C. Increase your network bandwidth from your datacenter to GCP. Increasing network bandwidth from your datacenter to GCP (C) directly addresses the bottleneck: data must physically traverse that WAN link before it ever reaches GCP, so no amount of optimization inside GCP can compensate for a saturated or slow ingress connection. A is wrong…

Submitted by hassan_iq· Mar 30, 2026Building and operationalizing data processing systems

Question

Your company maintains a hybrid deployment with GCP, where analytics are performed on your anonymized customer data. The data are imported to Cloud Storage from your data center through parallel uploads to a data transfer server running on GCP. Management informs you that the daily transfers take too long and have asked you to fix the problem. You want to maximize transfer speeds. Which action should you take?

Options

  • AIncrease the CPU size on your server.
  • BIncrease the size of the Google Persistent Disk on your server.
  • CIncrease your network bandwidth from your datacenter to GCP.
  • DIncrease your network bandwidth from Compute Engine to Cloud Storage.

How the community answered

(20 responses)
  • A
    10% (2)
  • B
    5% (1)
  • C
    85% (17)

Explanation

Increasing network bandwidth from your datacenter to GCP (C) directly addresses the bottleneck: data must physically traverse that WAN link before it ever reaches GCP, so no amount of optimization inside GCP can compensate for a saturated or slow ingress connection. A is wrong because CPU is not the limiting factor in a bulk transfer workflow - network I/O is, and adding CPU cycles won't move bits faster. B is wrong because the server's persistent disk size is irrelevant; the data flows through the transfer server to Cloud Storage, and disk size doesn't affect throughput (disk speed might, but that's not what's offered). D is wrong because the Compute Engine-to-Cloud Storage link is on Google's internal network, which is already extremely high-bandwidth and is rarely the bottleneck compared to the external WAN connection from your datacenter.

Memory tip: Visualize the data's full journey - datacenter → WAN → GCP edge → Cloud Storage. The slowest segment sets the ceiling for the entire pipeline, and in hybrid scenarios the WAN link between on-prem and cloud is almost always that segment.

Topics

#Hybrid Cloud#Data Transfer#Network Performance#Cloud Storage

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