RFC 1661 - The Point-to-Point Protocol (PPP) specifies that the Point-to-
Point Protocol (PPP) provides a standard method for transporting multi-protocol datagrams
over point-to-point links. PPP is comprised of three main components:
1 A method for encapsulating multi-protocol datagrams.
2 A Link Control Protocol (LCP) for establishing, configuring, and testing the data-link
connection.
3 A family of Network Control Protocols (NCPs) for establishing and configuring different
network-layer protocols.

Explanation/Reference:
Threat analysis is the examination of threat sources against system vulnerabilities to determine the threats for a particular system in a particular operational environment.
The following answers are incorrect:
Risk analysis is the process of identifying the risks to system security and determining the probability of occurrence, the resulting impact, and the additional safeguards that mitigate this impact.
Risk analysis is synonymous with risk assessment and part of risk management, which is the ongoing process of assessing the risk to mission/business as part of a risk-based approach used to determine adequate security for a system by analyzing the threats and vulnerabilities and selecting appropriate, cost- effective controls to achieve and maintain an acceptable level or risk.
Due Diligence is identifying possible risks that could affect a company based on best practices and standards.
Reference(s) used for this question:
STONEBURNER, Gary & al, National Institute of Standards and Technology (NIST), NIST Special Publication 800-27, Engineering Principles for Information Technology Security (A Baseline for Achieving Security), June 2001 (page B-3).

Explanation/Reference:
Organizations usually forgive a particular type, number, or pattern of violations, thus permitting a predetermined number of user errors before gathering this data for analysis. An organization attempting to track all violations, without sophisticated statistical computing ability, would be unable to manage the sheer quantity of such data. To make a violation listing effective, a clipping level must be established.
The clipping level establishes a baseline for violation activities that may be normal user errors. Only after this baseline is exceeded is a violation record produced. This solution is particularly effective for small- to medium-sized installations. Organizations with large-scale computing facilities often track all violations and use statistical routines to cull out the minor infractions (e.g., forgetting a password or mistyping it several times).
If the number of violations being tracked becomes unmanageable, the first step in correcting the problems should be to analyze why the condition has occurred. Do users understand how they are to interact with the computer resource? Are the rules too difficult to follow? Violation tracking and analysis can be valuable tools in assisting an organization to develop thorough but useable controls. Once these are in place and records are produced that accurately reflect serious violations, tracking and analysis become the first line of defense. With this procedure, intrusions are discovered before major damage occurs and sometimes early enough to catch the perpetrator. In addition, business protection and preservation are strengthened.
The following answers are incorrect:
All of the other choices presented were simply detractors.
The following reference(s) were used for this question:
Handbook of Information Security Management

Explanation/Reference:
Employee badges are considered Physical so would not be a logical control.
The following answers are incorrect:
userids. Is incorrect because userids are a type of logical control.
access profiles. Is incorrect because access profiles are a type of logical control.
passwords. Is incorrect because passwords are a type of logical control.

Section: Access Control
Explanation/Reference:
Source: TIPTON, Hal, (ISC)2, Introduction to the CISSP Exam presentation.