The data transfer rate over the ADSL connection is 128000 bps. How long (in seconds)

The data transfer rate over the ADSL connection is 128000 bps. How long (in seconds) will it take to transfer a 625KB file over this channel?

The solution of the problem:

1. Determine the size of the transmitted file in bits:

1a. There are 1024 bytes in one kilobyte, hence:

625 * 1024 = 640,000.

1b. There are 8 bits in one byte, hence:

640000 * 8 = 5120000.

2. Determine how long the file transfer will take:

5120000/128000 = 40.

Answer: It will take 40 seconds to transfer the file over the specified ADSL connection.