Answer Happy

(d) i. Explain how NTP is used to estimate the clock offset between the client and the server. State any assumptions that are needed in this estimation. [8 marks] ii. How does the amount of the estimated offset affect the adjustment of the client's clock? [6 marks] iii. A negative value is returned by elapsedTime when using this code to measure how long some code takes to execute: long startTime = System.currentTimeMillis(); // the code being measured long elapsedTime System.currentTimeMillis() - startTime; Explain why this happens and propose a solution. [6 marks]