AES is an example of Symmetric Key algorithm. After DES was used as an encryption standard for over 20 years and it was cracked in a relatively short time once the necessary technology was available, NIST decided a new standard, the Advanced Encryption Standard (AES), needed to be put into place .
In January 1997 , NIST announced its request for AES candidates and outlined the requirements in FIPS PUB 197. AES was to be a symmetric block cipher supporting key sizes of 128, 192, and 256 bits.
The following five algorithms were the finalists:
MARS Developed by the IBM team that created Lucifer
RC6 Developed by RSA Laboratories
Serpent Developed by Ross Anderson, Eli Biham, and Lars Knudsen
Twofish Developed by Counterpane Systems
Rijndael Developed by Joan Daemen and Vincent Rijmen
Out of these contestants, Rijndael was chosen.
The block sizes that Rijndael supports are 128, 192 , and 256 bits.
The number of rounds depends upon the size of the block and the key length:
If both the key and block size are 128 bits, there are 10 rounds.
If both the key and block size are 192 bits, there are 12 rounds.
If both the key and block size are 256 bits, there are 14 rounds.
When preparing for my CISSP exam, i came across this post by Laurel Marotta at the URL below:
http://cissp-study.3965.n7.nabble.com/CCCure-CISSP-Study-Plan-to-crack-CISSP-clarificationtd401.html
This tips was originally contributed by Doug Landoll Here is an easy way to remember the types of crypto cipher: The sentence to remember is: DEER MRS H CARBIDS
Asymmetric: encrypt with 1 key, decrypt with other Key exchange. A key pair: Public and Private. Services: Confidentiality, Nonrepudiation, Integrity, Digital Signature D - Diffie-Hellman E - El Gamal: DH +nonrepudiation E - ECC R - RSA
Hash- one-way algorithm, no key
M - MD5
R - RIPEMD (160)
S - SHA (3)
H - Haval (v)
Symmetric: Encryption, one key
C - CAST
A - AES: 128k, 10r; 192k, 12 r; 256k, 14r
R - RC4, RC5, RC6
B - BLOWFISH:23-448k, 64bit block
I - IDEA : 128k, 64bit block
D - DES-64-bit block, 16r
S - SERPENT
The following answers are all incorrect because they are all Asymmetric Crypto ciphers:
Elliptic curve cryptosystem(ECC)
Diffie-Hellman
Merkle-Hellman Knapsack
The following reference(s) were/was used to create this question:
Harris, Shon (2012-10-18). CISSP All-in-One Exam Guide, 6th Edition (p. 809). McGraw-Hill .
Kindle Edition.

Explanation/Reference:
Explanation:
A public posting on the internet is not secure. Compared to the internet, an intranet provides more control.
Incorrect Answers:
A: A private posting provides high security and control.
B: Ethernet is a link layer protocol in the TCP/IP stack. An Intranet is defined on the physical layer. The data link layer provides more control compared to the physical layer.
D: An extranet is a website that allows controlled access to partners, vendors and suppliers or an authorized set of customers - normally to a subset of the information accessible from an organization's intranet. As an extranet is a subset of an intranet is provides more security and control.
References:
Harris, Shon, All In One CISSP Exam Guide, 6th Edition, McGraw-Hill, New York, 2013, p. 661

This model, (D.c. Brewer and M.j. Nash, Chinese Wall Model,
Proceedings of the 1989 IEEE Computer Society Symposium on Security
and Privacy, 1989), defines rules that prevent conflicts of interest in organizations that may have access to information from companies that are competitors of each other. Essentially, the model states that a user working on one account cannot work on a competitor's account for a designated period of time. Answer the Biba model is an
integrity model that is an analog of the Bell-LaPadula confidentiality
model of answer Bell-LaPadula.
Answer the lattice refers to the general
information flow model where security levels are represented by a
lattice structure. The model defines a transitive ordering relation, ,
on security classes. Thus, for security classes X, Y, and Z, the
ordering relation X Y Z describes the situation where Z is the
highest security class and X is the lowest security class, and there is an ordering among the three classes.

Explanation/Reference:
Explanation:
Kerberos is a trusted, third party authentication protocol that was developed under Project Athena at MIT.
In Greek mythology, Kerberos is a three-headed dog that guards the entrance to the Underworld. Using symmetric key cryptography, Kerberos authenticates clients to other entities on a network of which a client requires services.
Kerberos addresses the confidentiality and integrity of information. It does not address availability.
Incorrect Answers:
B: Kerberos does address integrity.
C: Kerberos does make use of Symmetric Keys.
D: Kerberos does address confidentiality of information.
References:
Krutz, Ronald L. and Russell Dean Vines, The CISSP and CAP Prep Guide: Mastering CISSP and CAP, Wiley Publishing, Indianapolis, 2007, p. 78

The correct answer is "Data normalization". Normalization includes eliminating redundant data and eliminating attributes in a table that are not dependent on the primary key of that table. In answer a, a database management system (DBMS) provides access to the database and is used for maintaining the database. Answers "Data integrity" and "Data reuse" are distracters.