Subtitles of the Movie

In this movie, we will turn our attention over to the Activity Sequencing workbook questions, found within your work files. There are twelve questions to review, so we'll jump right into the list of questions. Questions one consists of our regular workbook question; what is the purpose of this process. And that is to identify and document the logical relationships among the Scheduled Activities. We're taking the Activity List that was put together in the previous process and placing them in correct order according to their dependencies. Question two, three and four test your knowledge of the inputs, the tools and techniques and the outputs and the primary output includes Project Schedule Network Diagrams, which displays the sequencing of the activities. Question five presents a question to the displayed Network Diagram. It says how many potential paths does the Network Diagram below have? This is a tricky one. When there's multiple paths like this, it's very easy to miss a path. The Network Diagram has a total of seven paths. I'll run through the paths. They are Begin to A, A to G, G to End, Begin to A, A to C, C to E, E to G and G to End, Begin to A, A to C, C to F, F to End, Begin to E, E to G, G to End and we have three more: Begin to B, B to C, C to E, E to G, G to End. Next is Begin to B, B to C, C to F, F to End and the last path is Begin to B, B to D and D to End. Again, it's easy to miss one of these. Question six says what are the two types of Schedule Network Diagrams and what are they also known as. And these include Precedence Diagramming Method, also known as Activity on Node and Arrow Diagramming Method, also known as Activity on Arrow. As a reminder, our Precedence Diagramming Method creates a Schedule Network Diagram that uses boxes or rectangles, which are called nodes, to represent the activities and connects them by arrows to show the dependencies, while an Arrow Diagramming Method creates a Schedule Network Diagram that contains arrows to represent the activities and connects them at nodes to show the dependencies. Question seven states what type of Network Diagram is displayed below. Based on the descriptions I provided a moment ago, this Network Diagram fits the Arrow Diagramming Method. And question eight is a follow up to seven, which asks in the Network Diagram presented in the previous question, what does the dotted arrow represent. These represent dummy relationships, which are there to show dependencies between activities that contain no work durations. That also means they contain a duration of zero, so if you have a Network Diagram that you must calculate a critical path for, you always count dummy activities as a zero duration. Question nine says what is the most common type of dependency that a Precedence Network Diagram has. And the answer is Finish to Start. Question ten says what is a sub-network or a fragment network. And that means that it refers to using all or portions of Project Schedule Network Diagrams from previous similar projects or basically templates. Question eleven says what are the three types of dependencies that exist between Scheduled Activities. These are Mandatory Dependencies, which are dependencies that are inherent in the nature of the work being done, also known as hard logic; Discretionary Dependencies, which is when a specific sequence is desired based on knowledge of best practices within a particular application area or an unusual aspect of the project. This is also known as preferred logic, preferential logic or soft logic. And lastly, External Dependencies. These involve a relationship between project activities and non-project activities. They can be based on historical information or from seller contracts or proposals. Now we have one final question for you which says if a lag time of three days for Activity B has been assigned, what does it mean. And the answer it that it must wait three days after its predecessor has finished in order to begin. An example of this would be if, let's say if walls of a house were painted before the carpet was installed. The activity involving carpet installation may have a lag time of two days so that the walls may completely dry. And that concludes our review of the Activity Sequencing workbook questions.