Cognitive passwords are fact or opinion-based information used to verify an
individual's identity. Passwords that can be used only once are one-time or dynamic passwords.
Password generators that use a challenge response scheme refer to token devices.
A passphrase is a sequence of characters that is longer than a password and is transformed into a
virtual password.
Source: WALLHOFF, John, CISSP Summary 2002, April 2002, CBK#1 Access Control System &
Methodology (page 2), /Documents/CISSP_Summary_2002/index.html.

Source: KRUTZ, Ronald L. & VINES, Russel D., The CISSP Prep Guide:
Mastering the Ten Domains of Computer Security, page 222.
"System crash" and "system failure" are the key words. One "recovers" from a crash or failure.

Explanation/Reference:
Explanation:
Low humidity of less than 40 percent increases the static electricity damage potential. A static charge of
4000 volts is possible under normal humidity conditions on a hardwood or vinyl floor, and charges up to
20,000 volts or more are possible under conditions of very low humidity with non-static-free carpeting.
Although you cannot control the weather, you certainly can control your relative humidity level in the computer room through your HVAC systems.
The list below lists the damage various static electricity charges can do to computer hardware:
40 volts: Sensitive circuits and transistors

1,000 volts: Scramble monitor display

1,500 volts: Disk drive data loss

2,000 volts: System shutdown

4,000 volts: Printer Jam

17,000 volts: Permanent chip damage

Incorrect Answers:
A: 550 volts is not enough to cause disk drive data loss. Therefore, this answer is incorrect.
B: 1000 volts is not enough to cause disk drive data loss. Therefore, this answer is incorrect.
D: Only 1500 volts is enough to cause disk drive data loss, not 2000 volts. Therefore, this answer is incorrect.
References:
Krutz, Ronald L. and Russell Dean Vines, The CISSP and CAP Prep Guide: Mastering CISSP and CAP, Wiley Publishing, Indianapolis, 2007, p. 460

Explanation/Reference:
Explanation:
The Key Distribution Center (KDC) is the most important component within a Kerberos environment as it holds all users' and services' secret keys.
Incorrect Answers:
A: Key Distribution Service is not a valid Kerberos term.
B: The authentication service is a part of the KDC that authenticates a principal. It does not hold all users' and services' cryptographic keys D: Key Granting Service is not a valid Kerberos term.
References:
Harris, Shon, All In One CISSP Exam Guide, 6th Edition, McGraw-Hill, 2013, pp. 209-213