Explanation/Reference:
Explanation:
Fiber-optic cable is expensive and difficult to work with.
Incorrect Answers:
A: Fiber optic cables are not affected by electromagnetic interference (EMI).
B: Fiber optic cables are hard to tap.
D: Fiber-optic cabling has higher transmission speeds that allow signals to travel over longer distances.
References:
Harris, Shon, All In One CISSP Exam Guide, 6th Edition, McGraw-Hill, New York, 2013, p. 560

Explanation/Reference:
Explanation:
A virtual private network (VPN) is a secure, private connection through an untrusted network. VPN technology requires a tunnel to work and it assumes encryption.
Incorrect Answers:
B: A one-time password is not the same as a VPN.
C: Tunnel, not pipeline, can be used as a name for a VPN.
D: Tunnel, not bypass, can be used as a name for a VPN.
References:
Harris, Shon, All In One CISSP Exam Guide, 6th Edition, McGraw-Hill, New York, 2013, p. 702

A Gantt chart is a popular type of bar chart showing the interrelationships of how projects, schedules, and other time-related systems progress over time.
Not B:
Program Evaluation and Review Technique - (PERT) A method used to size a software product and calculate the Standard Deviation (SD) for risk assessment. The PERT equation (beta distribution) estimates the Equivalent Delivered Source Instructions (EDSIs) and the SD based on the analyst's estimates of the lowest possible size, the most likely size, and the highest possible size of each computer program component (CPC).
http://computing-dictionary.thefreedictionary.com/

Explanation/Reference:
Explanation:
A lattice is a mathematical construct that is built upon the notion of a group. The most common definition of the lattice model is "a structure consisting of a finite partially ordered set together with least upper and greatest lower bound operators on the set."
Two methods are commonly used for applying mandatory access control:
Rule-based (or label-based) access control: This type of control further defines specific conditions for

access to a requested object. A Mandatory Access Control system implements a simple form of rule- based access control to determine whether access should be granted or denied by matching:
- An object's sensitivity label
- A subject's sensitivity label
Lattice-based access control: These can be used for complex access control decisions involving

multiple objects and/or subjects. A lattice model is a mathematical structure that defines greatest lower- bound and least upper-bound values for a pair of elements, such as a subject and an object.
Incorrect Answers:
A: The model described in the question is a type of mandatory access control. However, the Lattice Model is specifically described in the question.
B: A discretionary model is not what is described in the question.
D: A rule model is not what is described in the question.
References:
Harris, Shon, All In One CISSP Exam Guide, 6th Edition, McGraw-Hill, New York, 2013, p. 381
https://en.wikipedia.org/wiki/Computer_access_control