How long will it take to download 3MB file from the internet using a 56kbps modem?

Answer 1

Downloading a 3MB file from the internet using a 56kbps modem will take about 100 seconds.

3 * 1024 * 1024 * 1.25 (to add the start and stop bits) / 0.8 (to add a 20% overhead in the protocol) / 49100 (an optimum speed with a 56kbps modem).

This does not include any additional latency by the provider or any of the switches along the way, nor does it consider that the data stream can and will be compressed at the source and decompressed at the destination.

Answer 2

5mbps is in advertised internet speed and theoretically transfers at .625MB (megabytes) per second. so 20GB (20480MB) divided by .625MB will give you the time in seconds to download the file, which is 32768 seconds. and into hours it will take. 9.1 hours to download. Assuming you are downloading at 5mbps and your isp isnt at a peak time.

Answer 3

Doing a basic calculation you can estimate the minimum time without overhead from any transfer protocol:

• 3MB = 24Mb = 24000kb
• file size / transfer speed = file transfer time
• 24000kb / 56kbps = 24000/56 seconds = 428.57 seconds = 7.14 minutes

To account for the overhead from transfer protocols, increase by 10% to 50% as an estimate:

• minimum download time ~ 7.85 minutes
• maximum download time ~ 10.71 minutes

Note: these are only rough estimates and depending on the condition of your phone line and other variables that cannot be estimated the actual time could be much much longer!

Answer 4

4 minutes assuming no error correction or protocol overheads.

Answer 5

about 6-7 h

Answer 6

1 hour