Section: Volume A
Explanation:
5.6.2.1 Variance Analysis
Variance analysis is a technique for determining the cause and degree of difference between the baseline and actual performance. Project performance measurements are used to assess the magnitude of variation from the original scope baseline. Important aspects of project scope control include determining the cause and degree of variance relative to the scope baseline (Section 5.4.3.1) and deciding whether corrective or preventive action is required.

Section: Volume C
Explanation:
6.6.2.2 Critical Path Method
The critical path method, which is a method used to estimate the minimum project duration and determine the amount of scheduling flexibility on the logical network paths within the schedule model. This schedule network analysis technique calculates the early start, early finish, late start, and late finish dates for all activities without regard for any resource limitations by performing a forward and backward pass analysis through the schedule network, as shown in Figure 6-18. In this example the longest path includes activities A, C, and D, and, therefore, the sequence of A-C-D is the critical path. The critical path is the sequence of activities that represents the longest path through a project, which determines the shortest possible project duration. The resulting early and late start and finish dates are not necessarily the project schedule, rather they indicate the time periods within which the activity could be executed, using the parameters entered in the schedule model for activity durations, logical relationships, leads, lags, and other known constraints. The critical path method is used to calculate the amount of scheduling flexibility on the logical network paths within the schedule model.
On any network path, the schedule flexibility is measured by the amount of time that a schedule activity can be delayed or extended from its early start date without delaying the project finish date or violating a schedule constraint, and is termed "total float." A CPM critical path is normally characterized by zero total float on the critical path. As implemented with PDM sequencing, critical paths may have positive, zero, or negative total float depending on constraints applied. Any activity on the critical path is called a critical path activity. Positive total float is caused when the backward pass is calculated from a schedule constraint that is later than the early finish date that has been calculated during forward pass calculation. Negative total float is caused when a constraint on the late dates is violated by duration and logic. Schedule networks may have multiple near-critical paths. Many software packages allow the user to define the parameters used to determine the critical path(s).
Adjustments to activity durations (if more resources or less scope can be arranged), logical relationships (if the relationships were discretionary to begin with), leads and lags, or other schedule constraints may be necessary to produce network paths with a zero or positive total float. Once the total float for a network path has been calculated, then the free float-the amount of time that a schedule activity can be delayed without delaying the early start date of any successor or violating a schedule constraint-can also be determined. For example the free float for Activity B, in Figure 6-18, is 5 days.

Section: Volume E
Explanation/Reference: https://www.workbreakdownstructure.com/work-breakdown-structure-according-to-pmbok.php

Explanation/Reference:
Explanation:
10.1.3.1 Communications Management Plan
The communications management plan is a component of the project management plan that describes how project communications will be planned, structured, monitored, and controlled. The plan contains the following information:
Stakeholder communication requirements;

Information to be communicated, including language, format, content, and level of detail;

Reason for the distribution of that information;

Time frame and frequency for the distribution of required information and receipt of acknowledgment or

response, if applicable;
Person responsible for communicating the information;

Person responsible for authorizing release of confidential information;

Person or groups who will receive the information;

Methods or technologies used to convey the information, such as memos, e-mail, and/or press releases;

Resources allocated for communication activities, including time and budget;

Escalation process identifying time frames and the management chain (names) for escalation of issues

that cannot be resolved at a lower staff level;
Method for updating and refining the communications management plan as the project progresses and

develops;
Glossary of common terminology;

Flow charts of the information flow in the project, workflows with possible sequence of authorization, list

of reports, and meeting plans, etc.; and
Communication constraints usually derived from a specific legislation or regulation, technology, and

organizational policies, etc.
The communications management plan can also include guidelines and templates for project status meetings, project team meetings, e-meetings, and e-mail messages. The use of a project website and project management software can also be included if these are to be used in the project.

Section: Volume C
Explanation:
Process: 5.3 Define Scope
Definition: The process of developing a detailed description of the project and product.
Key Benefit: The key benefit of this process is that it describes the product, service, or result boundaries by defining which of the requirements collected will be included in and excluded from the project scope.
Inputs
1. Scope management plan
2. Project charter
3. Requirements documentation
4. Organizational process assets
Tools & Techniques
1. Expert judgment
2. Product analysis
3. Alternatives generation
4. Facilitated workshops
Outputs
1. Project scope statement
2. Project documents updates