Is a program that copies itself repeatedly, for example in memory or on a network, using up resources and possibly shutting down the computer or network?

It won't exactly shut down the network but it is usually a coding error that causes the program to replicate its self

If ana decided to be against in prioritizing the task in her to do list, she will likely have insufficient time in doing the things in which she wouldn't be able to finish and in the same way, she won't be able to finish all of the task that she needed to do.