Valid Introduction-to-Cryptography Exam Online & Introduction-to-Cryptography Associate Level Exam

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The WGU Introduction-to-Cryptography certification is on trending nowadays, and many IT aspirants are trying to get it. Success in the Introduction-to-Cryptography test helps you land well-paying jobs. Additionally, the WGU Introduction-to-Cryptography certification exam is also beneficial to get promotions in your current company. But the main problem that every applicant faces while preparing for the Introduction-to-Cryptography Certification test is not finding updated WGU Introduction-to-Cryptography practice questions.

WGU Introduction to Cryptography HNO1 Sample Questions (Q10-Q15):

NEW QUESTION # 10
(How does a Caesar cipher operate in the encryption of messages?)

Answer: D

Explanation:
A Caesar cipher is a classic monoalphabetic substitution cipher where each plaintext letter is replaced by a letter a fixed number of positions away in the alphabet. For example, with a shift of 3, A becomes D, B becomes E, and so on, wrapping around at the end (X#A, Y#B, Z#C). This "fixed shift" is the entire key: both sender and receiver must know the shift value to encrypt and decrypt. Decryption simply shifts letters back by the same amount. The Caesar cipher illustrates foundational cryptographic ideas: key-based transformation, reversible mapping, and the importance of key space size. Because the key space is tiny (only 25 meaningful shifts in the Latin alphabet), it is easily broken by brute force. It is also vulnerable to frequency analysis because letter frequency patterns in the ciphertext resemble those of the plaintext, just relabeled. While historically important for introducing substitution concepts, it provides no meaningful security by modern standards. The defining operation is the fixed positional shift, which directly matches option D.


NEW QUESTION # 11
(Which attack maps hashed values to their original input data?)

Answer: B

Explanation:
A rainbow table attack uses large, precomputed tables that link hash outputs back to likely original inputs (typically passwords). Instead of storing every password#hash pair directly (which would be huge), rainbow tables store chains created by alternating hash operations with reduction functions, allowing attackers to reconstruct candidate plaintexts that produce a given hash. This makes cracking fast , if the target hashes are unsalted and use a known, fast hash function. Salt defeats rainbow tables because the attacker would need separate tables for each salt value, which becomes infeasible when salts are unique and sufficiently large. A dictionary at tack is related but typically computes hashes on the fly from a wordlist rather than using precomputed chain structures. A birthday attack targets collisions, not mapping to original data. Brute-force tries all candidates without precomputation. Because th e question explicitly describes mapping hashed values back to original data via a precomputed approach, the correct choice is Rainbow table.


NEW QUESTION # 12
(How does adding salt to a password improve security?)

Answer: A

Explanation:
A salt is a unique, random value stored alongside a password hash and combined with the password during hashing. Its main security benefit is that it ensures identical passwords do not produce identical hashes across different accounts or systems. If two users choose the same password, their stored hashes will differ because their salts differ, which directly prevents attackers from spotting shared passwords by comparing hashes. Salts also defeat precomputation attacks such as rainbow tables, because an attacker would need to regenerate tables for each possible salt value-a task that becomes infeasible when salts are large and unique per password. Salt does not enforce password complexity rules (that's a policy/validation function), does not guarantee users choose different passwords, and does not prevent password reuse across sites. The correct statement is that salt makes the resulting hash different even for the same password, improving resistance to offline cracking at scale and eliminating the "same hash
= same password" shortcut attackers rely on.


NEW QUESTION # 13
(A Linux user password is identified as follows:
$2a$08$AbCh0RCM8p8FGaYvRLI0H.Kng54gcnWCOQYIhas708UEZRQQjGBh4
Which hash algorithm should be used to salt this password?)

Answer: B

Explanation:
The string format $2a$08$... is a well-known identifier for the bcrypt password hashing scheme. In common password-hash notation, the prefix indicates the algorithm and parameters: "$2a$" denotes bcrypt (version
2a), and "08" indicates the cost factor (work factor) controlling how computationally expensive hashing is.
bcrypt is designed specifically for password storage: it includes a built-in salt and is intentionally slow and adaptive, making brute-force and GPU attacks far more expensive than fast general-purpose hashes like MD5 or SHA-512. NTLM and MD5 are obsolete for secure password storage due to speed and known weaknesses.
SHA-512, while cryptographically strong as a hash, is still too fast for password hashing unless used in a dedicated password-hashing construction (e.g., PBKDF2, scrypt, Argon2) with appropriate parameters and salts. Since the given hash clearly matches bcrypt's encoding, the correct algorithm is bcrypt, which incorporates salting and cost-based key stretching as part of its design.


NEW QUESTION # 14
(How can auditing enhance an organization ' s cryptographic practices?)

Answer: D


NEW QUESTION # 15
......

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