It's IT project management homework

Consider the following tasks shown in table below. Draw an Activity-on-Arrow (AOA) network diagram representing the project. Put the node numbers in circles and draw arrows from node to node, labeling each arrow with the activity letter and estimated time

*All duration estimated times are in days; and the network proceeds from Node 1 to Node 9.

Question Two

0.5 Mark

Write all possible paths in the diagram of question one. What is the critical path for this project and how long is it?