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WGU C839 OBJECTIVE ASSESSMENT FINAL EXAM
NEWEST 2026-2027 COMPLETE 300 QUESTIONS AND
CORRECT ANSWERS WITH RATIONALES
(100%VERIFIED ANSWERS) /ALREADY GRADED
A+/BRAND NEW VERSION!!
Manipulating individuals so that they will divulge
confidential information, rather than by breaking in or
using technical cracking techniques. - ANSWER-Social
engineering attack
Cryptanalysis attack where the attacker is assumed to
have access only to a set of ciphertexts. - ANSWER-
Ciphertext-only attack
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servers and software signing, for which independent
verification and checking of identity and authority is done
by issuing CA - ANSWER-Class 3 Certificates
it should be impossible for any attacker to calculate, or
otherwise guess, from any given subsequence, any
previous or future values in the sequence - ANSWER-BSI
Criteria K3 states
Cryptanalysis attack that uses identified statistical
patterns. - ANSWER-Statistical attack
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Which of the following is a substitution cipher used by
ancient Hebrew scholars?
A Caesar
B Vigenere
C Scytale
D Atbash - ANSWER-D
Shifting each letter in the alphabet a fixed number of
spaces to the right or left is an example of what?
A Bit shifting
B Confusion
C Multi substitution
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D Single substitution - ANSWER-D
Which of the following most accurately defines encryption?
A changing a message so it can only be easily read by the
intended recipient
B Making binary changes to a message to conceal it
C changing a message using complex mathematics
D Applying keys to plain text - ANSWER-A
WGU C839 OBJECTIVE ASSESSMENT FINAL EXAM
NEWEST 2026-2027 COMPLETE 300 QUESTIONS AND
CORRECT ANSWERS WITH RATIONALES
(100%VERIFIED ANSWERS) /ALREADY GRADED
A+/BRAND NEW VERSION!!
Manipulating individuals so that they will divulge
confidential information, rather than by breaking in or
using technical cracking techniques. - ANSWER-Social
engineering attack
Cryptanalysis attack where the attacker is assumed to
have access only to a set of ciphertexts. - ANSWER-
Ciphertext-only attack
,2|Page
servers and software signing, for which independent
verification and checking of identity and authority is done
by issuing CA - ANSWER-Class 3 Certificates
it should be impossible for any attacker to calculate, or
otherwise guess, from any given subsequence, any
previous or future values in the sequence - ANSWER-BSI
Criteria K3 states
Cryptanalysis attack that uses identified statistical
patterns. - ANSWER-Statistical attack
,3|Page
Which of the following is a substitution cipher used by
ancient Hebrew scholars?
A Caesar
B Vigenere
C Scytale
D Atbash - ANSWER-D
Shifting each letter in the alphabet a fixed number of
spaces to the right or left is an example of what?
A Bit shifting
B Confusion
C Multi substitution
, 4|Page
D Single substitution - ANSWER-D
Which of the following most accurately defines encryption?
A changing a message so it can only be easily read by the
intended recipient
B Making binary changes to a message to conceal it
C changing a message using complex mathematics
D Applying keys to plain text - ANSWER-A
