age 1 of 115
WGU C839 Introductory Cryptography Exam
What type of encryption uses different keys to encrypt and
decrypt the message?
A Symmetric
B Private key
C Secure
D Asymmetric .......Answer. ...... D
The most widely used asymmetric encryption algorithm is what?
A RSA
B Vigenere
C DES
,age 2 of 115
D Caesar Cipher .......Answer. .... A
Original, unencrypted information is referred to as .
A text
B plaintext
C cleantext
D ciphertext .......Answer...... B
Which of the following is NOT an asymmetric system?
A PGP
B RSA
C SSL
D DES .......Answer. ...... D
,age 3 of 115
In order for User A to send User B an encrypted message that
only User B can read, User A must encrypt message with which
of the following keys?
A User A's public key
B User A's private key
C User B's public key
D User B's private key .......Answer. C
The greatest weakness with symmetric algorithms is .
A They are less secure than asymmetric
B The problem of key exchange
C They are slower than asymmetric
D The problem of generating keys .......Answer. .... B
, age 4 of 115
Which of the following is generally true about block sizes?
A Smaller block sizes increase security
B Block sizes must be more than 256 bits to be secure
C Block size is irrelevant to security
D Larger block sizes increase security .......Answer ...... D
A is a function that takes a variable-size input m and
returns a fixed-size string.
A Symmetric cipher
B Hash
WGU C839 Introductory Cryptography Exam
What type of encryption uses different keys to encrypt and
decrypt the message?
A Symmetric
B Private key
C Secure
D Asymmetric .......Answer. ...... D
The most widely used asymmetric encryption algorithm is what?
A RSA
B Vigenere
C DES
,age 2 of 115
D Caesar Cipher .......Answer. .... A
Original, unencrypted information is referred to as .
A text
B plaintext
C cleantext
D ciphertext .......Answer...... B
Which of the following is NOT an asymmetric system?
A PGP
B RSA
C SSL
D DES .......Answer. ...... D
,age 3 of 115
In order for User A to send User B an encrypted message that
only User B can read, User A must encrypt message with which
of the following keys?
A User A's public key
B User A's private key
C User B's public key
D User B's private key .......Answer. C
The greatest weakness with symmetric algorithms is .
A They are less secure than asymmetric
B The problem of key exchange
C They are slower than asymmetric
D The problem of generating keys .......Answer. .... B
, age 4 of 115
Which of the following is generally true about block sizes?
A Smaller block sizes increase security
B Block sizes must be more than 256 bits to be secure
C Block size is irrelevant to security
D Larger block sizes increase security .......Answer ...... D
A is a function that takes a variable-size input m and
returns a fixed-size string.
A Symmetric cipher
B Hash
