Activity Sequencing

Correct Answer: Finish-to-Start and Start-to-Start

The right answer is 'Finish-to-Start and Start-to-Start.' In the scenario described in the question, first, the design teams have to finalize the app's flow and design before coding can start, which is a Finish-to-Start relationship. Simultaneously, after the app's overall concept is decided, market research and content creation can begin while the design is still being finalized, signifying a Start-to-Start relationship. The other options do not illustrate the described sequence of activities accurately. 'Finish-to-Start and Finish-to-Finish' would imply that all activities can only start after the previous one has finished, which is not the case here as the market research and content creation can begin before the design is finalized. 'Start-to-Finish and Start-to-Start' and 'Finish-to-Finish and Start-to-Finish' both involve Start-to-Finish relationships, which don't apply here because no activity is to be completed before another starts.

Correct Answer: Precedence Diagramming Method (PDM)

The best tool to manage dependencies in a project is the Precedence Diagramming Method (PDM). This technique allows the project manager to visualize the dependencies between different tasks and prioritize them accordingly. It also helps in identifying the critical path in a project - the longest sequence of tasks that must be completed on time for the project to be completed on its due date. On the other hand, Arrow Diagramming Method (ADM) is an older technique which is less commonly used today. While it also visualizes project tasks, it’s less flexible than PDM because it doesn't handle dependencies like start-to-start and finish-to-finish. The Gantt chart, while useful for visualizing the project schedule and keeping everyone informed about the project progress, it's not designed specifically to manage dependencies. The Work Breakdown Structure (WBS) is a tool that helps break down the project into manageable chunks. But it doesn't specifically display dependencies between tasks, it's main purpose is to organize, define, and graphically display the total scope of the project.

Correct Answer: Start-Buy Software and Hardware-Install Server-[Start-Setup Workstations-Finish] and [Start-Setup Network-Finish]

The given sequence adheres closely to the conditions stated. It starts with the procurement of the software and hardware, after which the server is installed. Following the completion of the server installation, two activities commence - the setup of the workstations and the network. However, the network setup must be completed before the workstation setup, as stated. The second option sequences these incorrectly, with network setup starting before the procurement of software and hardware. The third and fourth options both fail to respect the conditional necessity for the server installation to precede the network setup and workstation setup. Therefore, the first scenario is the only one correctly following all given conditions.