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WGU C839 OBJECTIVE ASSESSMENT FINAL
EXAM NEWEST 2025/2026 COMPLETE 300
QUESTIONS AND CORRECT ANSWERS WITH
RATIONALES (VERIFIED ANSWERS) |ALREADY
GRADED A+||BRAND NEW VERSION!!
OBJECTIVE ASSESSMENT FINAL
What does the Online Certificate Status Protocol (OCSP) provide?
A Revoked certificates B Hashing C VPN connectivity D Encryption - ANSWER-A
In terms of cryptanalysis, what does it mean to break a cipher?
A finding a method to decrypt a message that is at least twice as efficient as brute force
B trying every possible key until you can decrypt the message
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C deploying an algorithm that uses a 228 bit key
D finding any method to decrypt the message that is more efficient than brute force - ANSWER-D
An authentication method that periodically re-authenticates the client by establishing a hash that is then resent from the client is called
______.
A PAP
B CHAP
C SPAP
D EAP - ANSWER-B
What is a TGS?
A The server that grants Kerberos tickets B protocol for encryption C protocol for key exchange D The server that escrows keys - ANSWER-A
What is Kerchoff's principle? 2 / 4
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A A minimum key size of 256 bits is necessary for security.B Both algorithm and key should be kept secret.C A minimum of 15 rounds is needed for a Feistel cipher to be secure.D Only the key needs to be secret, not the actual algorithm. - ANSWER- D
Which of the following is a fundamental principle of cryptography that holds that the algorithm can be publically disclosed without damaging security?
A Babbage's principle B Kerkchoff's principle C Vigenere's principle D Shamir's principle - ANSWER-B
A process that puts a message into the least significant bits of a binary file is called what?
A Symmetric cryptography B Masking C Steganography 3 / 4
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D Asymmetric cryptography - ANSWER-C
If you wished to see a list of revoked certificates from a CA, where would you look?
A CRL B CA C RFC
D RA - ANSWER-A
Which of the following is generally true about block ciphers?
A Secret block ciphers should be trusted.B Block ciphers permute the bits of the input plaintext.C The plaintext and ciphertext are always the same size.D A block cipher is an encryption function for variable-size blocks of data. - ANSWER-C
What does the OCSP protocol provide?
A encryption B VPN connectivity
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