In database terminology, is the same to say that the number of Degrees is "X" and that the number of columns is "X" inside a Table. This question is just trying to test our knowledge of rare, difficult to fin terminology. You can check this in the knowledgebase of Oracle. When we talk about degrees, we are just talking about columns. The schema is the structure of the database, and the relations are the way each table relates to others.

Explanation/Reference:
Explanation:
Fair Information Practice was first developed in the United States in the 1970s by the Department for Health, Education and Welfare (HEW). T Fair Information Practice does not state that there the personal data record-keeping system must be secret.
Incorrect Answers:
A: HEW Fair Information Practices include that there should be mechanisms for individuals to review data about them, to ensure accuracy.
C: HEW Fair Information Practices include
For all data collected there should be a stated purpose

Information collected by an individual cannot be disclosed to other organizations or individuals unless

specifically authorized by law or by consent of the individual
D: HEW Fair Information Practices include
Records kept on an individual should be accurate and up to date

Data should be deleted when it is no longer needed for the stated purpose

References:
https://en.wikipedia.org/wiki/Information_privacy_law

Explanation/Reference:
Explanation:
The TCSEC defines two kinds of covert channels:
Storage channels - Communicate by modifying a "storage location"

Timing channels - Perform operations that affect the "real response time observed" by the receiver

The TCSEC, also known as the Orange Book, requires analysis of covert storage channels to be classified as a B2 system and analysis of covert timing channels is a requirement for class B3.
Incorrect Answers:
A: Level A1 requires a system to protect against covert timing channels. However, the lower level B3 also requires it.
C: Level B2 does not require a system to protect against covert timing channels.
D: Level B1 does not require a system to protect against covert timing channels.
References:
https://en.wikipedia.org/wiki/Covert_channel

When using link encryption, packets have to be decrypted at each hop and encrypted again.
Information staying encrypted from one end of its journey to the other is a characteristic of end-to-end encryption, not link encryption.
Link Encryption vs. End-to-End Encryption
Link encryption encrypts the entire packet, including headers and trailers, and has to be decrypted at each hop.
End-to-end encryption does not encrypt the IP Protocol headers, and therefore does not need to be decrypted at each hop.
Reference: All in one, Page 735 & Glossary
and
Source: WALLHOFF, John, CBK#5 Cryptography (CISSP Study Guide), April 2002 (page
6).