WGU C839 EXAM QUESTIONS WITH CORRECT
ANSWERS NEW MODIFIED CURRENTLY TESTED
AND GRADED A+ 2026 LATEST
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 --CORRECT ANSWER--B
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 --CORRECT ANSWER--D
A _____ is a function that takes a variable-size input m and returns a fixed-size
string.
A Symmetric cipher
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,B Hash
C Asymmetric cipher
D Feistel --CORRECT ANSWER--B
Which of the following is a cryptographic protocol that allows two parties to
establish a shared key over an insecure channel?
A Elliptic Curve
B RSA
C MD5
D Diffie-Hellman --CORRECT ANSWER--D
A _________ is a digital representation of information that identifies you as a
relevant entity by a trusted third party?
A Digital Signature
B Hash
C Ownership stamp
D Digest --CORRECT ANSWER--A
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,What type of encryption uses different keys to encrypt and decrypt the
message?
A Symmetric
B Private key
C Secure
D Asymmetric --CORRECT ANSWER--D
The most widely used asymmetric encryption algorithm is what?
A RSA
B Vigenere
C DES
D Caesar Cipher --CORRECT ANSWER--A
Original, unencrypted information is referred to as ____.
A text
B plaintext
C cleantext
D ciphertext --CORRECT ANSWER--B
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, Which of the following is NOT an asymmetric system?
A PGP
B RSA
C SSL
D DES --CORRECT ANSWER--D
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 --CORRECT ANSWER--C
What is the standard used by most digital certificates?
A X.509
B CRL
C RFC 2298
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ANSWERS NEW MODIFIED CURRENTLY TESTED
AND GRADED A+ 2026 LATEST
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 --CORRECT ANSWER--B
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 --CORRECT ANSWER--D
A _____ is a function that takes a variable-size input m and returns a fixed-size
string.
A Symmetric cipher
Page 1 of 68
,B Hash
C Asymmetric cipher
D Feistel --CORRECT ANSWER--B
Which of the following is a cryptographic protocol that allows two parties to
establish a shared key over an insecure channel?
A Elliptic Curve
B RSA
C MD5
D Diffie-Hellman --CORRECT ANSWER--D
A _________ is a digital representation of information that identifies you as a
relevant entity by a trusted third party?
A Digital Signature
B Hash
C Ownership stamp
D Digest --CORRECT ANSWER--A
Page 2 of 68
,What type of encryption uses different keys to encrypt and decrypt the
message?
A Symmetric
B Private key
C Secure
D Asymmetric --CORRECT ANSWER--D
The most widely used asymmetric encryption algorithm is what?
A RSA
B Vigenere
C DES
D Caesar Cipher --CORRECT ANSWER--A
Original, unencrypted information is referred to as ____.
A text
B plaintext
C cleantext
D ciphertext --CORRECT ANSWER--B
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, Which of the following is NOT an asymmetric system?
A PGP
B RSA
C SSL
D DES --CORRECT ANSWER--D
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 --CORRECT ANSWER--C
What is the standard used by most digital certificates?
A X.509
B CRL
C RFC 2298
Page 4 of 68
