if i have two network devices A and B, and there is a bandwidth link of 1000 Mbps and i would like to send two packages simultaneously each with the size 500 Mb from device A to device B. how it works in real life. option (A) the link only transmits one package at a time until it reaches to its destination then sending the next package. for example, if i sent the two packages at 10:00 pm for the first package it will take (500/1000)(transmission delay) = 0.5 second to reach to device B at 10:05 pm then the next package will reach at 10:10 pm. option (B) the two packages will be sent at the same time and all reach to its destination (device B ) at 10:05 pm as the bandwidth can stand the two packages 500 + 500 = 1000 Mbps. if the second option is the correct answer, then if i want to send three packages each with the size 500 Mb, does that mean the third package will be lost due to inefficient bandwidth ?? please help
i am using a simulator, and in that simulator only one package is transmitted at a time until reaching its destination and then the second package is sent. is that how sending packages work in real life??
Why would you want to send two packages simultaneously? That's not a rhetorical question. It could make sense to send audio and video simultaneously, so the sound track matches up with the events on screen.
From a programming perspective, you hand off your data to the OS. This function call might not return immediately, if the amount of data is large and the OS has not enough RAM available to buffer it.
Note: you seem to mix up size and bandwidth, when you talk about 500 Mb + 500 Mb = 1000 Mbps. The units make it clear that this does not add up like that. Sending a 500 Mb package over a 1000 Mbps link indeed takes half a second (500 ms), sending 3 such packages takes 1500 ms. There's no magic at the 1000 millisecond barrier that would cause the first two packages to be sent, but the third package to be lost. In fact, it's quite possible to download a 700 MB file (~1 CD, 5800 MBit) over a 10 Mbit line. That just takes 580+ seconds.