Table 1 shows the activities for the data center and network upgrading project with their precedence relationships. Table 1 (Jadual 11 Maximum time (weeks) Cost (RM) Activity Predecessor Maximum reduction in time (weeks) Normal Crash Normal Crash 2 2 6 A B D E F G H 5 4 10 5 7 5 4 6 A,B B C D AC D F, E, G 3 6 25,000 30,000 45,000 30,000 30,000 20,000 35,000 35,000 Crash cost per week (RM) 3,000 5,000 9,000 4,000 7,000 3,000 4,500 10,000 34,000 40,000 81,000 38,000 37,000 26,000 44,000 65,000 3 2 4 2 1 2 2 3 3 2 3 (a) Discuss different approaches that can be used in the budget estimation process of this project. (2 Marks/ Markah) (b) Construct the complete Activity on Network (AON) diagram by including the Earliest Start Time (EST), Latest Start Time (LST), Earliest Finish Time (EFT) and Latest Finish Time (LFT). Identify the critical path. (6 Marks/ Markah) (c) Explain briefly how do you determine the EST for an activity with two predecessors? How do you determine the LFT for an activity with two successors? (2 Marks / Markah) (d) Explain how is slack determined. Determine the activity slack and identify the activity with highest allowance for delay without affecting the project duration (4 Marks/Markah) (e) Determine the project duration and its cost. (2 Marks/ Markah) Compute the minimum additional cost to the project, if the project duration is to be shortened by: [Kirakan kos tambahan yang minimum kepada projek, jika tempoh projek ingin dipendekkan kepada: (i) Two weeks. (ii) Six weeks