Explanation
Backup Media
Reference: Official (ISC)2 Guide to the CISSP CBK, Third Edition page 1029

RFC2828 (Internet Security Glossary) defines a known-plaintext attack as a cryptanalysis technique in which the analyst tries to determine the key from knowledge of some plaintext-ciphertext pairs (although the analyst may also have other clues, such as the knowing the cryptographic algorithm). A chosen-ciphertext attack is defined as a cryptanalysis technique in which the analyst tries to determine the key from knowledge of plaintext that corresponds to ciphertext selected (i.e., dictated) by the analyst. A chosen- plaintext attack is a cryptanalysis technique in which the analyst tries to determine the key from knowledge of ciphertext that corresponds to plaintext selected (i.e., dictated) by the analyst. The other choice is a distracter.
The following are incorrect answers:
A chosen-plaintext attacks
The attacker has the plaintext and ciphertext, but can choose the plaintext that gets encrypted to see the corresponding ciphertext. This gives her more power and possibly a deeper understanding of the way the encryption process works so she can gather more information about the key being used. Once the key is discovered, other messages encrypted with that key can be decrypted.
A chosen-ciphertext attack
In chosen-ciphertext attacks, the attacker can choose the ciphertext to be decrypted and has access to the resulting decrypted plaintext. Again, the goal is to figure out the key. This is a harder attack to carry out compared to the previously mentioned attacks, and the attacker may need to have control of the system that contains the cryptosystem.
A known-algorithm attack
Knowing the algorithm does not give you much advantage without knowing the key. This is a bogus detractor. The algorithm should be public, which is the Kerckhoffs's Principle . The only secret should be the key.
Reference(s) used for this question:
Source: SHIREY, Robert W., RFC2828: Internet Security Glossary, may 2000.
and
Harris, Shon (2012-10-25). CISSP All-in-One Exam Guide, 6th Edition (p. 866). McGraw-
Hill. Kindle Edition.
and
Kerckhoffs's Principle

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.

Web pages that use SSL use 'https://' instead of 'http://', whereas documents that use Secure-http start with s-http://.
The following answers are incorrect:
Is the predecessor to Transport Layer Security, It was developed by Netscape, and It is used for transmitting private documents over the Internet.
As these are all TRUE answers, therefore incorrect for this question.
References: TIPTON, Harold F. & HENRY, Kevin, Official (ISC)2 Guide to the CISSP CBK,
2007, pages 496, 976
KRUTZ, Ronald L. & VINES, Russell Dean, The CISSP Prep Guide, Gold Edition, 2003, page 117

The other options are the three principles of integrity. Answer "Prevention of authorized modifications by unauthorized users" is a distracter and does not make sensE.
* Internal consistency ensures that internal data correlate. For example, the total number of a particular data item in the database should be the sum of all the individual, non-identical occurrences of that data item in the database. External consistency requires that the database content be consistent with the real world items that it represents.