Which value correctly represents the maximum theoretical MB/s for a 1 Gbps connection?

Which value correctly represents the maximum theoretical MB/s for a 1 Gbps connection?

• A. 100 MB/s
• B. 62.5 MB/s
• C. 12.5 MB/s
• D. 125 MB/s

Answer: (D)

Converting bits per second to bytes per second shows the maximum theoretical throughput. A 1 Gbps link transmits 1,000,000,000 bits every second. Since there are 8 bits in a byte, divide by 8 to get bytes per second: 1,000,000,000 ÷ 8 = 125,000,000 bytes per second, which is 125 MB/s. This is the theoretical upper limit, assuming no overhead. In real networks, actual speeds are lower due to protocol and hardware overhead; if you used mebibytes (MiB) instead of decimal MB, it would be about 117.19 MiB/s, but for MB/s the correct value is 125 MB/s.

Converting bits per second to bytes per second shows the maximum theoretical throughput. A 1 Gbps link transmits 1,000,000,000 bits every second. Since there are 8 bits in a byte, divide by 8 to get bytes per second: 1,000,000,000 ÷ 8 = 125,000,000 bytes per second, which is 125 MB/s. This is the theoretical upper limit, assuming no overhead. In real networks, actual speeds are lower due to protocol and hardware overhead; if you used mebibytes (MiB) instead of decimal MB, it would be about 117.19 MiB/s, but for MB/s the correct value is 125 MB/s.