Explanation/Reference:
Coaxial cable is called "coaxial" because it includes one physical channel that carries the signal surrounded (after a layer of insulation) by another concentric physical channel, both running along the same axis.
The outer channel serves as a ground. Many of these cables or pairs of coaxial tubes can be placed in a single outer sheathing and, with repeaters, can carry information for a great distance.
Source: STEINER, Kurt, Telecommunications and Network Security, Version 1, May 2002, CISSP Open Study Group (Domain Leader: skottikus), Page 14.

TCSEC focused on confidentiality while ITSEC added integrity and availability as security goals.
The following answers are incorrect:
integrity and confidentiality. Is incorrect because TCSEC addressed confidentiality. confidentiality and availability. Is incorrect because TCSEC addressed confidentiality. none of the above. Is incorrect because ITSEC added integrity and availability as security goals.

Explanation/Reference:
Source: KRUTZ, Ronald L. & VINES, Russel D., The CISSP Prep Guide: Mastering the Ten Domains of Computer Security, 2001, John Wiley & Sons, Pages 16, 32.

Constrained user interfaces limit the functions that can be selected by a user.
Another method for controlling access is by restricting users to specific functions based on their role in the system. This is typically implemented by limiting available menus, data
views, encryption, or by physically constraining the user interfaces.
This is common on devices such as an automated teller machine (ATM). The advantage of
a constrained user interface is that it limits potential avenues of attack and system failure
by restricting the processing options that are available to the user.
On an ATM machine, if a user does not have a checking account with the bank he or she
will not be shown the "Withdraw money from checking" option. Likewise, an information
system might have an "Add/Remove Users" menu option for administrators, but if a normal,
non-administrative user logs in he or she will not even see that menu option. By not even
identifying potential options for non-qualifying users, the system limits the potentially
harmful execution of unauthorized system or application commands.
Many database management systems have the concept of "views." A database view is an
extract of the data stored in the database that is filtered based on predefined user or
system criteria. This permits multiple users to access the same database while only having
the ability to access data they need (or are allowed to have) and not data for another user.
The use of database views is another example of a constrained user interface.
The following were incorrect answers:
All of the other choices presented were bogus answers.
The following reference(s) were used for this question:
Hernandez CISSP, Steven (2012-12-21). Official (ISC)2 Guide to the CISSP CBK, Third
Edition ((ISC)2 Press) (Kindle Locations 1989-2002). Auerbach Publications. Kindle
Edition.

Section: Network and Telecommunications
Explanation/Reference:
Each data packet is assigned the IP address of the sender and the IP address of the recipient. The term network refers to the part of the IP address that identifies each network. The terms host and node refer to the parts of the IP address that identify a specific machine on a network.
Source: KRUTZ, Ronald L. & VINES, Russel D., The CISSP Prep Guide: Mastering the Ten Domains of Computer Security, 2001, John Wiley & Sons, Page 87.