If the analyst is able to get the source system to insert into ...

[lracut11]

If the analyst is able to get the source system to insert into the system a message chosen by the analyst, a _________ attack is possible.
 
  A. ciphertext only  B. known plaintext
 
  C. chosen plaintext  D. chosen ciphertext

Question 2

The _________ key size is used with the Data Encryption Standard algorithm.
 
  A. 128 bit  B. 168 bit
 
  C. 56 bit  D. 32 bit

[joanwhite]

Answer to Question 1

C

Answer to Question 2

C