Section: Risk, Response and Recovery
Explanation/Reference:
A prolonged power outage is a blackout.
From: HARRIS, Shon, All-In-One CISSP Certification Exam Guide, 3rd. Edition McGraw-Hill/Osborne, 2005, page 368.

Section: Network and Telecommunications
Explanation/Reference:
The category rating is based on how tightly the copper cable is wound within the shielding: The tighter the wind, the higher the rating and its resistance against interference and crosstalk.
Twisted pair copper cabling is a form of wiring in which two conductors are wound together for the purposes of canceling out electromagnetic interference (EMI) from external sources and crosstalk from neighboring wires.
Twisting wires decreases interference because the loop area between the wires (which determines the magnetic coupling into the signal) is reduced. In balanced pair operation, the two wires typically carry equal and opposite signals (differential mode) which are combined by subtraction at the destination. The noise from the two wires cancel each other in this subtraction because the two wires have been exposed to similar EMI.
The twist rate (usually defined in twists per metre) makes up part of the specification for a given type of cable.
The greater the number of twists, the greater the attenuation of crosstalk. Where pairs are not twisted, as in most residential interior telephone wiring, one member of the pair may be closer to the source than the other, and thus exposed to slightly different induced EMF.
Reference:
KRUTZ, Ronald L. & VINES, Russel D., The CISSP Prep Guide: Mastering the Ten Domains of Computer Security, 2001, John Wiley & Sons, Page 101.
and
http://www.consultants-online.co.za/pub/itap_101/html/ch04s05.html

Confidentiality is the opposite of disclosure.
Source: KRUTZ, Ronald L. & VINES, Russel D., The CISSP Prep Guide: Mastering the Ten Domains of Computer Security, 2001, John Wiley & Sons, Page 59.

The full backup makes a complete backup of every file on the system every
time it is run. Since a single backup set is needed to perform a full restore, it is appropriate
for off-site archiving.
Source: KRUTZ, Ronald L. & VINES, Russel D., The CISSP Prep Guide: Mastering the
Ten Domains of Computer Security, John Wiley & Sons, 2001, Chapter 3:
Telecommunications and Network Security (page 69).

The TCP/IP protocol model is similar to the OSI model but it defines only four layers:
Application Host-to-host Internet Network access
Reference(s) used for this question:
http://www.novell.com/documentation/nw65/ntwk_ipv4_nw/data/hozdx4oj.html and KRUTZ, Ronald L. & VINES, Russel D., The CISSP Prep Guide: Mastering the Ten Domains of Computer Security, John Wiley & Sons, 2001, Chapter 3: Telecommunications and Network Security (page 84). also see: http://en.wikipedia.org/wiki/Internet_Protocol_Suite#Layer_names_and_number_of_layers_ in_the_literature