What is the function of a Project Management Office (PMO)?

Using values such as scope, cost, budget, and duration or measures of scale such as size, weight, and complexity from a previous similar project as the basis for estimating the same parameter or measurement for a current project describes which type of estimating?

A project manager has created an issue log to document issues communicated by project team members during weekly team meetings. This is an input of:

In order to detect quality issues earlier in the project life cycle, the project manager is using an agile/ adaptive environment.
What is the main difference between waterfall and agile/adaptive development approaches for Project Quality Management?

Which of the following is an information gathering technique in Identify Risks?