The connector for ethernet cables is called RJ45. for phone jack is RJ11. Although they look the same, the RJ11 has only 4 leads, as opposed to 9 leads in RJ45. Also, RJ11 is not as wide as RJ45, so the connector does not fit.
Even if it would, the signals would be totally incompatible, so no success can be expected.
The answer is (data) abstraction!
Hope it helped (:
Answer: For better code management and modularity
Explanation:
An application consist several lines of code so when we break an entire code into several small procedures it becomes easy to maintain and look for errors while debugging. This process also is part of good code writing and hence easy to manage our code during testing and debugging phases of application development.