WGU Introduction-to-Cryptography Actual Free Exam Questions & Community Discussion

Exam Code/Number: Introduction-to-Cryptography
Exam Name/Title: WGU Introduction to Cryptography HNO1
Certification Provider: WGU
Corresponding Certification: Courses and Certificates

Exam Questions: 95
Updated On: Aug 18, 2026

Question #21

(How does a Caesar cipher operate in the encryption of messages?)

A. Substitution of letters with their numerical equivalents

B. Reversing the order of letters in a message

C. Encrypting messages using complex mathematical algorithms

D. Shifting each letter in the alphabet by a fixed number

Discussion 0

Correct Answer: D Vote an answer

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Question #22

(What is the value of 23 mod 6?)

A. 06

B. 04

C. 05

D. 03

Discussion 0

Correct Answer: C Vote an answer

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Question #23

(A security engineer is implementing device authentication as a form of two-factor authentication in a Public Key Infrastructure (PKI) environment. What should be used as a second form of authentication?)

A. Asymmetric encryption

B. Digital certificate

C. Digital signature

D. Symmetric encryption

Discussion 0

Correct Answer: B Vote an answer

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Question #24

(How does adding salt to a password improve security?)

A. Salt enforces the complexity rules for passwords.

B. Salt prevents users from reusing the same password.

C. Salt ensures two people do not have the same password.

D. Salt creates a different hash if two people use the same password.

Discussion 0

Correct Answer: D Vote an answer

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Question #25

(How can auditing enhance an organization ' s cryptographic practices?)

A. It eliminates the need for regular policy updates.

B. It identifies weaknesses in current practices.

C. It ensures all employees are trained in cryptography.

D. It guarantees that no security incidents will occur.

Discussion 0

Correct Answer: B Vote an answer

Question #26

(Which symmetric encryption technique uses a 112-bit key size and a 64-bit block size?)

A. DES

B. AES

C. IDEA

D. 3DES

Discussion 0

Correct Answer: D Vote an answer

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Question #27

(Which is a primary reason for ethical concerns about encryption?)

A. It complicates government access to potentially crucial information.

B. It reduces data storage requirements.

C. It provides faster data transmission.

D. It only benefits large corporations.

Discussion 0

Correct Answer: A Vote an answer

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Question #28

(Which default port must be allowed by firewalls for the key exchange of the IPsec handshaking process to be successful?)

A. TCP 443

B. TCP 500

C. UDP 500

D. UDP 443

Discussion 0

Correct Answer: C Vote an answer

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Question #29

(Which number of bits gets encrypted each time encryption is applied during stream encryption?)

A. 256

B. 40

C. 1

D. 192

Discussion 0

Correct Answer: C Vote an answer

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Question #30

(How does Electronic Codebook (ECB) mode encryption function?)

A. Encrypts each block with the same key, where each block is independent of the others

B. Converts from block to stream, then uses a counter value and a nonce to encrypt the data

C. Uses a self-synchronizing stream on the blocks, where the IV is encrypted and XORed with the data stream

D. Uses an IV to encrypt the first block, then uses the result to encrypt the next block

Discussion 0

Correct Answer: A Vote an answer

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