It is not a property of Bell LaPadula model.
The other answers are incorrect because:
A subject is not allowed to read up is a property of the 'simple security rule' of Bell
LaPadula model.
The *- property restriction can be escaped by temporarily downgrading a high level subject can be escaped by temporarily downgrading a high level subject or by identifying a set of trusted objects which are permitted to violate the *-property as long as it is not in the middle of an operation.
It is restricted to confidentiality as it is a state machine model that enforces the confidentiality aspects of access control.
Reference: Shon Harris AIO v3 , Chapter-5 : Security Models and Architecture , Page:279-
282

An Exigent Circumstance is an unusual and time-sensitive circumstance that justifies conduct that might not be permissible or lawful in other circumstances.
For example, exigent circumstances may justify actions by law enforcement officers acting without a warrant such as a mortal danger to a young child. Examples of other exigent circumstances include protecting evidence or property from imminent destruction.
In US v Martinez, Justice Thomas of the United States Court of Appeal used these words:
"As a general rule, we define exigent circumstances as those circumstances that would cause a reasonable person to believe that entry was necessary to prevent physical harm to the officers or other persons, the destruction of relevant evidence, the escape of the suspect, or some other consequence improperly frustrating legitimate law enforcement efforts."
In Alvarado, Justice Blackburn of the Court of Appeals of Georgia referred to exigent circumstances in the context of a drug bust:
"The exigent circumstance doctrine provides that when probable cause has been established to believe that evidence will be removed or destroyed before a warrant can be obtained, a warrantless search and seizure can be justified. As many courts have noted, the need for the exigent circumstance doctrine is particularly compelling in narcotics cases, because contraband and records can be easily and quickly destroyed while a search is progressing. Police officers relying on this exception must demonstrate an objectively reasonable basis for deciding that immediate action is required." All of the other answers were only detractors made up and not legal terms.
Reference(s) used for this question: Source: KRUTZ, Ronald L. & VINES, Russel D., The CISSP Prep Guide: Mastering the Ten Domains of Computer Security, 2001, John Wiley & Sons, Page 313. and http://www.duhaime.org/LegalDictionary/E/ExigentCircumstances.aspx

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"
The latest ISC2 book says:
"Degaussing can also be a form of media destruction. High-power degaussers are so strong in
some cases that they can literally bend and warp the platters in a hard drive. Shredding and
burning are effective destruction methods for non-rigid magnetic media. Indeed, some shredders
are capable of shredding some rigid media such as an optical disk. This may be an effective
alternative for any optical media containing nonsensitive information due to the residue size
remaining after feeding the disk into the machine. However, the residue size might be too large for
media containing sensitive information. Alternatively, grinding and pulverizing are acceptable
choices for rigid and solid-state media. Specialized devices are available for grinding the face of
optical media that either sufficiently scratches the surface to render the media unreadable or
actually grinds off the data layer of the disk. Several services also exist which will collect drives,
destroy them on site if requested and provide certification of completion. It will be the responsibility
of the security professional to help, select, and maintain the most appropriate solutions for media
cleansing and disposal."
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 (from the "all about degaussers link below). 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 wich 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.
I will admit that this is a bit of a trick question. Determining the difference between "read-only
media" and "read-only memory" is difficult for the question taker. However, I believe it is
representative of the type of question you might one day see on an exam.
The other answers are incorrect because:
Floppy Disks, Magnetic Tapes, and Magnetic Hard Disks are all examples of magnetic storage,
and therefore are erased by degaussing.
A videotape is a recording of images and sounds on to magnetic tape as opposed to film stock
used in filmmaking or random access digital media. Videotapes are also used for storing scientific
or medical data, such as the data produced by an electrocardiogram. In most cases, a helical scan
video head rotates against the moving tape to record the data in two dimensions, because video
signals have a very high bandwidth, and static heads would require extremely high tape speeds.
Videotape is used in both video tape recorders (VTRs) or, more commonly and more recently,
videocassette recorder (VCR) and camcorders. A Tape use a linear method of storing information
and since nearly all video recordings made nowadays are digital direct to disk recording (DDR),
videotape is expected to gradually lose importance as non-linear/random-access methods of
storing digital video data become more common.
Reference(s) used for this question:
Harris, Shon (2012-10-25). CISSP All-in-One Exam Guide, 6th Edition (Kindle Locations 25627-
25630). McGraw-Hill. Kindle Edition.
Schneiter, Andrew (2013-04-15). Official (ISC)2 Guide to the CISSP CBK, Third Edition : Security
Operations (Kindle Locations 580-588). . Kindle Edition.
All About Degaussers and Erasure of Magnetic Media:
http://www.degausser.co.uk/degauss/degabout.htm
http://www.degaussing.net/
http://www.cerberussystems.com/INFOSEC/stds/ncsctg25.htm

Explanation/Reference:
Explanation:
An object-oriented database has classes to define the attributes and procedures of its objects, which can be a variety of data types such as images, audio, documents, and video. This complex data is required for computer-aided design and imaging.
Incorrect Answers:
A, B, C: Computer-aided development, computer-aided duplexing, and computer-aided processing are not valid computing terms. The correct term is computer-aided design.
References:
Harris, Shon, All In One CISSP Exam Guide, 6th Edition, McGraw-Hill, New York, 2013, pp. 1173-1174