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WGU Course C839 - Intro to Cryptography Exam 2026
Actual Complete Real Verified Exam Questions &
Correct Answers (Verified Answers) | Already Graded
A+ | Newest Exam!!!
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
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
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A _____ is a function that takes a variable-size input m
and returns a fixed-size string.
A Symmetric cipher
B Hash
C Asymmetric cipher
D Feistel - 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 - Answer-D
A _________ is a digital representation of information that
identifies you as a relevant entity by a trusted third party?
A Digital Signature
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B Hash
C Ownership stamp
D Digest - Answer-A
What is the standard used by most digital certificates?
A X.509
B CRL
C RFC 2298
D OCSP - Answer-A
DES uses keys of what size?
A 56 bits
B 192 bits
C 128 bits
D 64 bits - Answer-A
What type of encryption uses different keys to encrypt and
decrypt the message?
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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
D Caesar Cipher - Answer-A
Original, unencrypted information is referred to as ____.
A text
B plaintext
C cleantext
D ciphertext - Answer-B
WGU Course C839 - Intro to Cryptography Exam 2026
Actual Complete Real Verified Exam Questions &
Correct Answers (Verified Answers) | Already Graded
A+ | Newest Exam!!!
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
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
,2|Page
A _____ is a function that takes a variable-size input m
and returns a fixed-size string.
A Symmetric cipher
B Hash
C Asymmetric cipher
D Feistel - 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 - Answer-D
A _________ is a digital representation of information that
identifies you as a relevant entity by a trusted third party?
A Digital Signature
,3|Page
B Hash
C Ownership stamp
D Digest - Answer-A
What is the standard used by most digital certificates?
A X.509
B CRL
C RFC 2298
D OCSP - Answer-A
DES uses keys of what size?
A 56 bits
B 192 bits
C 128 bits
D 64 bits - Answer-A
What type of encryption uses different keys to encrypt and
decrypt the message?
, 4|Page
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
D Caesar Cipher - Answer-A
Original, unencrypted information is referred to as ____.
A text
B plaintext
C cleantext
D ciphertext - Answer-B
