Explanation/Reference:
Explanation:
Kerberos uses shared secret keys and tickets for the initial authentication, not a public key algorithm.
Incorrect Answers:
A: Kerberos is an example of a single sign-on system for distributed environments, and therefore only requires a single login per session.
C: the foundation of Kerberos security is trust that clients and services have in the integrity of the KDC.
D: Kerberos provides mutual authentication in that both the user and the server verify each other's identity.
References:
Harris, Shon, All In One CISSP Exam Guide, 6th Edition, McGraw-Hill, 2013, pp. 209-213
https://en.wikipedia.org/wiki/Kerberos_(protocol)

Explanation/Reference:
Explanation:
SQL offers three classes of operators for creating views: select, project, and join.
The select operator serves to shrink the table vertically by eliminating unwanted rows (tuples).

The project operator serves to shrink the table horizontally by removing unwanted columns (attributes).

Most commercial implementations of SQL do not support a project operation, instead projections are achieved by specifying the columns desired in the output.
The join operator allows the dynamic linking of two tables that share a common column value.

Incorrect Answers:
A: SQL offers three classes of operators for creating views: select, project, and join. However, modern implementations of SQL do not support a project operation, instead projections are achieved by specifying the columns desired in the output. Nevertheless, project is a SQL operator.
B: Insert is a SQL command used to insert data into a table. It is not used to output a view.
C: Create is a SQL command used to create a new database, table, view, or index. However, the data or output of the view requires a select statement to shrink the table vertically by not showing unwanted rows, a project operation that shrinks the table horizontally by not showing unwanted columns, and a join statement when data from more than one table is required.
References:
http://db.grussell.org/section010.html
http://databasemanagement.wikia.com/wiki/Relational_Database_Model

Hierarchical Storage Management originated in the mainframe world where it was used to minimize storage costs. The HSM name signifies that the software has the intelligence to move files along a hierarchy of storage devices that are ranked in terms of cost per megabyte of storage, speed of storage and retrieval, and overall capacity limits. Files are migrated along the hierarchy to less expensive forms of storage based on rules tied to the frequency of data access. File migration and retrieval is transparent to users. Two major factors, data access response time and storage costs determine the appropriate combination of storage devices used in HSM. A typical three tier strategy may be composed of hard drives as primary storage on the file servers, rewritable optical as the secondary storage type, and tape as the final tertiary storage location. If faster access is required, a hard drive can be considered as an alternative to optical for secondary storage, and WORM (Write Once, Read Many) optical can also be implemented, in place of tape, as the final storage destination.

A given message and key always produce the same ciphertext.
The following answers are incorrect:
Repetitive encryption obscures any repeated patterns that may have been present in the plaintext. Is incorrect because with Electronic Code Book a given 64 bit block of plaintext always produces the same ciphertext
Individual characters are encoded by combining output from earlier encryption routines with plaintext. This is incorrect because with Electronic Code Book processing 64 bits at a time until the end of the file was reached. This is a characteristic of Cipher Feedback. Cipher
Feedback the ciphertext is run through a key-generating device to create the key for the next block of plaintext.
The previous DES output is used as input. Is incorrect because This is incorrect because with Electronic Code Book processing 64 bits at a time until the end of the file was reached
. This is a characteristic of Cipher Block Chaining. Cipher Block Chaining uses the output from the previous block to encrypt the next block.