10/11/25, 5:38 PM WGU Course C839 - Intro to Cryptography Exam Questions Exam (2025) Exam Questions & Answers | Latest Already Graded A+ …
WGU Course C839 - Intro to Cryptography Exam
Questions Exam (2025) Exam Questions &
Answers | Latest Already Graded A+ UPDATE
2025|2026!!
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Terms in this set (293)
What type of encryption D
uses different keys to
encrypt and decrypt the
message?
A Symmetric
B Private key
C Secure
D Asymmetric
The most widely used A
asymmetric encryption
algorithm is what?
A RSA
B Vigenere
C DES
D Caesar Cipher
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Original, unencrypted B
information is referred to
as ____.
A text
B plaintext
C cleantext
D ciphertext
Which of the following is D
NOT an asymmetric
system?
A PGP
B RSA
C SSL
D DES
In order for User A to send C
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
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The greatest weakness B
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
Which of the following is D
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
A _____ is a function that B
takes a variable-size input
m and returns a fixed-size
string.
A Symmetric cipher
B Hash
C Asymmetric cipher
D Feistel
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, 10/11/25, 5:38 PM WGU Course C839 - Intro to Cryptography Exam Questions Exam (2025) Exam Questions & Answers | Latest Already Graded A+ …
Which of the following is a D
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
A _________ is a digital A
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
What is the standard used A
by most digital
certificates?
A X.509
B CRL
C RFC 2298
D OCSP
DES uses keys of what A
size?
A 56 bits
B 192 bits
C 128 bits
D 64 bits
https://quizlet.com/1091098364/wgu-course-c839-intro-to-cryptography-exam-questions-exam-2025-exam-questions-answers-latest-already-graded-… 4/86
WGU Course C839 - Intro to Cryptography Exam
Questions Exam (2025) Exam Questions &
Answers | Latest Already Graded A+ UPDATE
2025|2026!!
Save
Terms in this set (293)
What type of encryption D
uses different keys to
encrypt and decrypt the
message?
A Symmetric
B Private key
C Secure
D Asymmetric
The most widely used A
asymmetric encryption
algorithm is what?
A RSA
B Vigenere
C DES
D Caesar Cipher
https://quizlet.com/1091098364/wgu-course-c839-intro-to-cryptography-exam-questions-exam-2025-exam-questions-answers-latest-already-graded-… 1/86
,10/11/25, 5:38 PM WGU Course C839 - Intro to Cryptography Exam Questions Exam (2025) Exam Questions & Answers | Latest Already Graded A+ …
Original, unencrypted B
information is referred to
as ____.
A text
B plaintext
C cleantext
D ciphertext
Which of the following is D
NOT an asymmetric
system?
A PGP
B RSA
C SSL
D DES
In order for User A to send C
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
https://quizlet.com/1091098364/wgu-course-c839-intro-to-cryptography-exam-questions-exam-2025-exam-questions-answers-latest-already-graded-… 2/86
,10/11/25, 5:38 PM WGU Course C839 - Intro to Cryptography Exam Questions Exam (2025) Exam Questions & Answers | Latest Already Graded A+ …
The greatest weakness B
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
Which of the following is D
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
A _____ is a function that B
takes a variable-size input
m and returns a fixed-size
string.
A Symmetric cipher
B Hash
C Asymmetric cipher
D Feistel
https://quizlet.com/1091098364/wgu-course-c839-intro-to-cryptography-exam-questions-exam-2025-exam-questions-answers-latest-already-graded-… 3/86
, 10/11/25, 5:38 PM WGU Course C839 - Intro to Cryptography Exam Questions Exam (2025) Exam Questions & Answers | Latest Already Graded A+ …
Which of the following is a D
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
A _________ is a digital A
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
What is the standard used A
by most digital
certificates?
A X.509
B CRL
C RFC 2298
D OCSP
DES uses keys of what A
size?
A 56 bits
B 192 bits
C 128 bits
D 64 bits
https://quizlet.com/1091098364/wgu-course-c839-intro-to-cryptography-exam-questions-exam-2025-exam-questions-answers-latest-already-graded-… 4/86
