Upload and download speed is also affected by the distance between your computer and the server that is either sending or receiving data. In general, the greater the distance the slower the speed of the data transfer.
Work can be defined as transfer of energy. In physics we say that work is done on an object when you transfer energy to that object. If one object transfers (gives) energy to a second object, then the first object does work on the second object.
work noun (ACTIVITY) 1  A1 [ U ] an activity, such as a job, that a person uses physical or mental effort to do, usually for money: 2  A2 [ U ] the material used by someone at work, or what they produce: 3  A1 [ U ] a place where a person goes specially to do their job: