Project management problem

Table Q5 below provides relevant information for a project. Table 25 Activity Predecessor Duration (days) C D E B,C F GE,F HD,E HG AWUNWA a) Using the Activity on Node (AoN) representation draw the network diagram for the above project, identify the different paths, and determine the project's duration. (20%) b) For the project described in Table Q5, activities A, B, C, E, F, G and H will require the presence of an external consultant. Activity D will require the involvement of the company's CEO and activity I will require the employment of a temporary worker. Re-draw the Critical Path Method (CPM) network and convert it into a Critical Chain Project Plan (CCPP) justifying your approach. Estimate the required buffer sizes and the target duration of the project. (30%) c) Briefly explain the potential advantages of using the Critical Chain Planning Method (CCPM) over the traditional Critical Path Method (CPM). (25%) d) Given an activity in the project whose planned cost was 4,000 but actual cost on due date is 3,500 and the value completed to date is only 75%, calculate and comment on the cost and schedule performance and calculate the estimated cost to complete it and the estimated cost at completion. (25%)