WGU C839 OBJECTIVE ASSESSMENT 2 LATEST
VERSIONS (VERSION A & B) 2023-2024 /WGU
C839 INTRODUCTION TO CRYPTOGRAPHY OA
ACTUAL EXAM 350 QUESTIONS AND CORRECT
DETAILED ANSWERS WITH
RTIONALES|ALREADY GRADED A+
WGU C839 OBJECTIVE ASSESSMENT VERSION A
Which of the following is NOT required for a hash?
A Minimum key length of 256 bits B Variable-length input, fixed-length output C Non-reversible D Few collisions - ANSWER- A
A ______ refers to a situation where two different inputs yield the same output.
A Substitution B Convergence C Collision D Transposition - ANSWER- C
What is a salt? 1 / 4
A Key rotation
B Random bits intermixed with a hash to increase randomness and reduce collisions.
C Random bits intermixed with a symmetric cipher to increase randomness and make it more secure.
D Key whitening - ANSWER- B
RFC 1321 describes what hash?
A RIPEMD
B SHA1
C GOST
D MD5 - ANSWER- D
What size block does FORK256 use?
A 256 B 128 C 512
D 64 - ANSWER- C
In 1977 researchers at MIT described what asymmetric algorithm? 2 / 4
A RSA B AES C DH
D EC - ANSWER- A
What is the formula (M^e)(%n) related to?
A Encrypting with EC B Generating Mersenne primes C Decrypting with RSA D Encrypting with RSA - ANSWER- C
Which of the following equations is related to EC?
A P = Cd%n B Me%n C y2 = x3 + Ax + B D Let m = (p-1)(q-1) - ANSWER- C
U.S. Patent 5,231,668 and FIPS 186 define what algorithm?
A AES B RSA C Elliptic Curve (EC) 3 / 4
D Digital Signature Algorithm (DSA) - ANSWER- D
What is X.509?
A The standard for PGP certificates B The standard for encrypting email C The standard for FIPS 186 D The standard for digital certificates - ANSWER- D
What is contained in a CRL?
A Keys for RSA B New certificates C Revoked certificates D Keys for AES - ANSWER- C
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?
- / 4