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WGU Introduction to Cryptography HNO1 Sample Questions:

1. (Which encryption algorithm encrypts with one key, decrypts with another key, and then encrypts with the first key?)

A) AES
B) 3DES
C) IDEA
D) DES

2. (What is an example of a block cipher mode of operation?)

A) Secure Hash Algorithm 256 (SHA-256)
B) Electronic Codebook (ECB)
C) Rivest-Shamir-Adleman (RSA)
D) Digital Signature Algorithm (DSA)

3. (Which mechanism can be applied to protect the integrity of plaintext when using AES?)

A) RC4
B) Kerberos key sharing
C) RSA
D) Message Authentication Code (MAC)

4. (What type of encryption uses different keys to encrypt and decrypt the message?)

A) Asymmetric
B) Secure
C) Private key
D) Symmetric

5. (Two people want to communicate through secure email. The person creating the email wants to ensure only their friend can decrypt the email. Which key should the person creating the email use to encrypt the message?)

A) Recipient's public key
B) Sender's private key
C) Recipient's private key
D) Sender's public key

Solutions: