Explanation/Reference:
Explanation:
Atoms and Data
Shon Harris says: "A device that performs degaussing generates a coercive magnetic force that reduces the magnetic flux density of the storage media to zero. This magnetic force is what properly erases data from media. Data are stored on magnetic media by the representation of the polarization of the atoms.
Degaussing changes this polarization (magnetic alignment) by using a type of large magnet to bring it back to its original flux (magnetic alignment). "
Degaussing is achieved by passing the magnetic media through a powerful magnet field to rearrange the metallic particles, completely removing any resemblance of the previously recorded signal. Therefore, degaussing will work on any electronic based media such as floppy disks, or hard disks - all of these are examples of electronic storage. However, "read-only media" includes items such as paper printouts and CD-ROM which do not store data in an electronic form or is not magnetic storage. Passing them through a magnet field has no effect on them.
Not all clearing/ purging methods are applicable to all media- for example, optical media is not susceptible to degaussing, and overwriting may not be effective against Flash devices. The degree to which information may be recoverable by a sufficiently motivated and capable adversary must not be underestimated or guessed at in ignorance. For the highest-value commercial data, and for all data regulated by government or military classification rules, read and follow the rules and standards.
Incorrect Answers:
A: Floppy Disks can be erased by degaussing.
C: Video Tapes can be erased by degaussing.
D: Magnetic Hard Disks can be erased by degaussing.
References:
http://www.degausser.co.uk/degauss/degabout.htm
http://www.degaussing.net/
http://www.cerberussystems.com/INFOSEC/stds/ncsctg25.htm

Explanation/Reference:
Explanation:
A Business Impact Analysis (BIA) does not identify persons that should be contacted during a disaster.
Incorrect Answers:
A: A Business Impact Analysis (BIA) is performed at the beginning of business continuity planning to identify all the areas of the enterprise that would suffer the greatest financial or operational loss in the event of a disaster or disruption.
B: The BIA identifies the company's critical systems needed for survival.
D: The BIA estimates the outage time that can be tolerated by the company as a result of a disaster or disruption.
References:
Harris, Shon, All In One CISSP Exam Guide, 6th Edition, McGraw-Hill, 2013, p. 911

Section: Software Development Security

Business process analysis is the most effective way to determine a mission critical asset in an organization. Business process analysis is a method of identifying, documenting, and optimizing the core business processes that deliver value to the customers and stakeholders. By analyzing the business processes, an organization can identify the assets that are essential for the successful operation and continuity of the business, such as data, systems, personnel, facilities, and suppliers. These assets are then classified as mission critical and prioritized for protection and recovery.

Level A1 is described as Verified Design.
The following answers are incorrect:
B3. This is incorrect because level B3 is described as Security Domains.
B2. This is incorrect because level B2 is described as Structured Protection. B1. This is incorrect because level B1 is described as Labeled Security.