Chapter 1 Review Questions

Let us see how much you have learned in this chapter by going over these review questions.

1. Encryption is need to insure all of the following except...
   1. Accountability
   2. Authentication
   3. Integrity
   4. Liberty
   5. Privacy

2. What is the term for applying a mathematical function to plain text and converting it to an encrypted cipher text?
   1. Cipher
   2. Decryption
   3. Encryption
   4. Key Agreement
   5. Message Digest

3. Which statement is false regarding digital certificates?
   1. A digital certificate is used to verify that a user sending a message is who they claim to be.
   2. A digital certificate typically contains a serial number and an expiration date.
   3. A digital certificate typically contains the owner's digital signature.
   4. Message authentication code is another name for a digital certifcate.
   5. The most widely used standard for digital certificates is X.509.

4. Which statement is false regarding symmetric key encryption?
   1. Block algorithms and stream algorithms are two categories of symmetric key encryption.
   2. Storing symmetric keys without error and without loss is easy to achieve.
   3. Symmetric key algorithms are computationally less intensive than asymmetric key algorithms.
   4. Symmetric key encryption is also called private key encryption.
   5. Symmetric key encryption is also called secret key encryption.

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© 2006 John Michael Pierobon

Notes