D830/ D334 OBJECTIVE ASSESSMENT FINAL NEWEST
2026 ACTUAL EXAM TEST BANK| WGU D830/ D334
INTRO TO CRYPTOGRAPHY OA FINAL REVIEW
WITH 250 REAL EXAM QUESTIONS AND CORRECT
VERIFIED ANSWERS/ GRADED A+ (MOST RECENT!!)
Which task does a root CA perform before publishing its own
certificate?
A. Encrypting it with its private key
B. Encrypting it with its public key
C. Signing it with its private key
D. Signing it with its public key - Correct Answer - Signing it with its
private key
Which algorithm is used to generate the thumbprint of a certificate?
A. RSA
B. 3DES
C. AES
D. SHA-1 - Correct Answer - SHA-1
A security analyst is validating the integrity and authenticity of a data
transaction. Which PKI component is being used?
A. Digital certificate
B. Digital signature
C. Asymmetric encryption
pg. 1
,D. Symmetric encryption - Correct Answer - Digital signature
Which PKI component generates digital certificates?
A. Certificate signing request (CSR)
B. Certificate policy (CP)
C. Certificate revocation list (CRL)
D. Certificate authority (CA) - Correct Answer - Certificate authority
(CA)
What is the maximum length (in bits) of encryption keys used by the
WEP protocol?
A. 40
B. 56
C. 128
D. 256 - Correct Answer - 40
Which cipher is used with WEP?
A. RC5
B. RC4
C. TKIP
D. AES - Correct Answer - RC4
Which default port must be open for the IPsec key exchange to be
successful?
A. UDP 162
pg. 2
,B. TCP 389
C. TCP 465
D. UDP 500 - Correct Answer - UDP 500
Which protocol indicates the virtual private network (VPN) is using
Authentication Header (AH)?
A. 48
B. 50
C. 51
D. 58 - Correct Answer - 51
Which cipher uses a grid to map letters into numeric values?
A. Bifid
B. SHA-1
C. Caesar
D. Vigenère - Correct Answer - Bifid
Which cipher uses a five-by-five matrix with nonrepeating characters?
A. Playfair
B. Rail code
C. Pigpen
D. Vigenère - Correct Answer - Playfair
Which technique should a security analyst use to determine the key
length in a Vigenère cipher?
pg. 3
, A. Frequency analysis
B. Brute force
C. Kasiski examination
D. Known plaintext - Correct Answer - Kasiski examination
Which symmetric encryption technique uses a 56-bit key size and a 64-
bit block size?
A. AES
B. DES
C. 3DES
D. IDEA - Correct Answer - DES
Which wireless security standard uses a 128-bit RC4 stream cipher for
encrypted communications?
A. WPA
B. WEP
C. VPN
D. GSM - Correct Answer - WPA
Which two components involved in performing encryption are known to
the party that will perform decryption before symmetric encryption is
applied? Choose 2 answers.
A. Cryptographic algorithm
B. Cryptographic key
C. Plaintext content
D. Initialization vector
pg. 4
2026 ACTUAL EXAM TEST BANK| WGU D830/ D334
INTRO TO CRYPTOGRAPHY OA FINAL REVIEW
WITH 250 REAL EXAM QUESTIONS AND CORRECT
VERIFIED ANSWERS/ GRADED A+ (MOST RECENT!!)
Which task does a root CA perform before publishing its own
certificate?
A. Encrypting it with its private key
B. Encrypting it with its public key
C. Signing it with its private key
D. Signing it with its public key - Correct Answer - Signing it with its
private key
Which algorithm is used to generate the thumbprint of a certificate?
A. RSA
B. 3DES
C. AES
D. SHA-1 - Correct Answer - SHA-1
A security analyst is validating the integrity and authenticity of a data
transaction. Which PKI component is being used?
A. Digital certificate
B. Digital signature
C. Asymmetric encryption
pg. 1
,D. Symmetric encryption - Correct Answer - Digital signature
Which PKI component generates digital certificates?
A. Certificate signing request (CSR)
B. Certificate policy (CP)
C. Certificate revocation list (CRL)
D. Certificate authority (CA) - Correct Answer - Certificate authority
(CA)
What is the maximum length (in bits) of encryption keys used by the
WEP protocol?
A. 40
B. 56
C. 128
D. 256 - Correct Answer - 40
Which cipher is used with WEP?
A. RC5
B. RC4
C. TKIP
D. AES - Correct Answer - RC4
Which default port must be open for the IPsec key exchange to be
successful?
A. UDP 162
pg. 2
,B. TCP 389
C. TCP 465
D. UDP 500 - Correct Answer - UDP 500
Which protocol indicates the virtual private network (VPN) is using
Authentication Header (AH)?
A. 48
B. 50
C. 51
D. 58 - Correct Answer - 51
Which cipher uses a grid to map letters into numeric values?
A. Bifid
B. SHA-1
C. Caesar
D. Vigenère - Correct Answer - Bifid
Which cipher uses a five-by-five matrix with nonrepeating characters?
A. Playfair
B. Rail code
C. Pigpen
D. Vigenère - Correct Answer - Playfair
Which technique should a security analyst use to determine the key
length in a Vigenère cipher?
pg. 3
, A. Frequency analysis
B. Brute force
C. Kasiski examination
D. Known plaintext - Correct Answer - Kasiski examination
Which symmetric encryption technique uses a 56-bit key size and a 64-
bit block size?
A. AES
B. DES
C. 3DES
D. IDEA - Correct Answer - DES
Which wireless security standard uses a 128-bit RC4 stream cipher for
encrypted communications?
A. WPA
B. WEP
C. VPN
D. GSM - Correct Answer - WPA
Which two components involved in performing encryption are known to
the party that will perform decryption before symmetric encryption is
applied? Choose 2 answers.
A. Cryptographic algorithm
B. Cryptographic key
C. Plaintext content
D. Initialization vector
pg. 4
