When a user uses the Huawei Cloud SMS service to migrate a window host with 300GB of data, in theory, it takes about 15 hours to complete the migration when the source bandwidth is 100Mbit/s.

Question

Options

• ATrue
• BFalse

• A
  16% (7)
• B
  84% (38)

Explanation

Option B is correct because the 15-hour estimate does not match the theoretical calculation. At 100 Mbit/s, the effective throughput is 100 / 8 = 12.5 MB/s. Transferring 300 GB (approximately 307,200 MB) at that rate takes roughly 307,200 / 12.5 = 24,576 seconds, which is about 6.8 hours - far less than 15 hours.

Option A is wrong because accepting the 15-hour figure requires either misapplying the unit conversion (confusing megabits with megabytes) or introducing unexplained overhead that the question explicitly excludes by saying "in theory."

Memory tip: When estimating migration time, divide the data size in megabits by the bandwidth in Mbit/s to get seconds, or divide the data size in gigabytes by the bandwidth in Mbit/s then multiply by 80 (since 1 byte = 8 bits and 1 GB = 1,000 MB). For 300 GB at 100 Mbit/s: (300 x 1,000 x 8) / 100 = 24,000 seconds, roughly 6.7 hours. If your answer is roughly double what the formula gives, you have likely forgotten to convert bits to bytes.

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