Answer-first summary for fast verification
Answer: Enable parallel composite uploads using gsutil on the file transfer.
**B is correct** because parallel composite uploads split the file into smaller parts, uploading them simultaneously. This method maximizes bandwidth use, speeding up the transfer. **A is incorrect** as changing the storage class affects costs and availability, not upload speed. **C is incorrect** because the GCP console lacks parallelism, making it less efficient than gsutil. **D is incorrect** since reducing the TCP window size can decrease throughput, slowing the transfer. For more details, visit [Google Cloud Storage documentation](https://cloud.google.com/storage/docs/uploads-downloads#parallel-composite-uploads).
Author: LeetQuiz Editorial Team
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At a food-delivery startup, you're tasked with backing up a 35 GB application data file to a Nearline Cloud Storage Bucket. With a dedicated 1 Gbps WAN connection, how can you maximize bandwidth efficiency for the fastest upload?
A
Change the storage class of the bucket from Nearline to Multi-Regional.
B
Enable parallel composite uploads using gsutil on the file transfer.
C
Upload the file using the GCP console instead of gsutil.
D
Use a smaller TCP window size on the machine doing the upload.
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