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Introduction-to-Cryptography WGU Introduction to Cryptography HNO1

  • WGU
  • 4 free sample questions

About this exam

Introduction-to-Cryptography is the WGU exam WGU Introduction to Cryptography HNO1. Paid practice material for this exam is not available yet, but you can try its free sample questions.

Exam code
Introduction-to-Cryptography
Vendor
WGU
Practice questions
Not available yet
Free sample questions
4
Question bank last updated
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Try 2 sample questions

Taken from the free sample set for Introduction-to-Cryptography.

Question 1

Which authentication method allows a customer to authenticate to a web service?)

  1. Option A:
    One-way server authentication 
  2. Option B:
    End-to-end authentication
  3. Option C:
    Mutual authentication
  4. Option D:
    One-way client authentication 
Show answer and explanation

Correct answer: D

One-way client authentication is the method where the client (customer) proves its identity to the server (web service). In cryptographic terms, this is commonly implemented through client credentials such as client TLS certificates (mTLS from the server’s perspective) or through authentication protocols layered over TLS (for example, signed tokens), but the defining direction is that the client is the party being authenticated. In a strict TLS certificate-authentication framing, client authentication occurs when the server requests a client certificate during the handshake and the client demonstrates possession of the corresponding private key (via signature in handshake messages). The server then validates the client certificate chain and authorization policy. One-way server authentication, by contrast, authenticates only the server to the client and does not identify the customer. Mutual authentication authenticates both sides simultaneously; while it includes client authentication, it is broader than what the question asks. “End-to-end authentication” describes assurance between endpoints across intermediaries, but it is not the specific “customer authenticates to service” method in certificate-based terminology. Therefore, the best answer is oneway client authentication. 

Question 2

(Which authentication method allows a web service installed on a network operating system to prove its identity to a customer?) 

  1. Option A:
    One-way client authentication
  2. Option B:
    One-way server authentication
  3. Option C:
    Mutual authentication
  4. Option D:
    End-to-end authentication 
Show answer and explanation

Correct answer: B

One-way server authentication is the standard model used by most TLS-enabled web services to prove the server’s identity to a client. In this model, the server presents an X.509 certificate during the TLS handshake. The client validates the certificate chain to a trusted root CA, checks hostname binding (CN/SAN), validates validity dates, and may check revocation status. If validation succeeds, the client gains cryptographic assurance that it is communicating with the holder of the private key corresponding to the server certificate’s public key, and that the certificate is issued to the expected domain/identity. This proves the server’s identity to the customer without requiring the customer to present a certificate. Mutual authentication would require both client and server to authenticate each other using certificates (commonly in certain enterprise APIs), but the question asks specifically about the web service proving its identity to the customer, which is satisfied by server-only authentication. One-way client authentication is the opposite direction (client proves identity to server). “End-to-end authentication” is a broader concept and not the specific TLS identity proof mechanism described here. Thus, one-way server authentication is the correct choice. 
See all 4 free sample questions