Presentation, application, and data processing. Presentation, application, and data processing are the three logical and physical computing tiers that make up a three-tier architecture. A three-tier architecture is a type of software architecture that separates an application into three layers or tiers that run on different servers or machines. Each tier performs a specific function or role and communicates with other tiers through well-defined interfaces. The presentation tier is the user interface and communication layer of the application, where the end user interacts with the application. The application tier is the logic or middle tier of the application, where data is processed using business rules. The data processing tier is the data or back-end tier of the application, where data is stored and managed12

Encryption is the process of transforming data into an unreadable format that can only be accessed by
authorized parties who have the decryption key. Encryption is the best approach for the project manager to
keep the PII confidential, as it protects the data from unauthorized access during storage and transmission12.

A velocity chart is a tool used in agile project management to track the progress and performance of a project
team over time. It shows the number of features or user stories completed in each iteration or sprint. The
planned timeline line represents the expected or ideal velocity, while the actual effort line shows the actual or
achieved velocity. By comparing the two lines, the Scrum master can identify any gaps, trends, or issues in the
project delivery.
Based on the image, the most likely update that the Scrum master can provide to the senior management team
is D. The project is trending ahead of schedule. This is because the actual effort line is above the planned
timeline line for most of the time, indicating that the project team is completing more features than expected in
each sprint. This means that the project is ahead of schedule and has a positive velocity variance.

Explanation
The project manager is creating a quality assurance plan when identifying multiple techniques that will help the project team ensure confidence and alignment with the project scope and goals during a brainstorming meeting. A quality assurance plan is a plan that defines and documents the standards, criteria, methods, activities, and tools for ensuring and verifying that the quality requirements and expectations of a project are met. A quality assurance plan can help to improve the quality of the project processes and deliverables and prevent or reduce defects or errors.

Option C shows a graph that most likely represents the observed relationship in this scenario. The graph shows
a learning curve, which is a graphical representation of the relationship between a learner's performance on a
task and the number of attempts or time required to complete the task. The learning curve theory proposes that
a learner's efficiency in a task improves over time the more the learner performs the task. In this case, the IT
intern was able to complete more set-ups in less time as they gained more experience and proficiency over the
two-week rotation12