WGU D334 OBJECTIVE
ASSESSMENT ACTUAL EXAM
2025/2026 QUESTIONS WITH
VERIFIED CORRECT SOLUTIONS ||
100% GUARANTEED PASS
<BRAND NEW VERSION>
Electronic Code Book (ECB) - ANSWER Block 1 encrypted =
Cipher 1, Block 2 encrypted = Cipher 2
Cipher Block Chaining (CBC) - ANSWER IV XOR Block 1 =
Cipher text 1, Cipher Text 1 XOR Block 2 = Cipher text 2.
Cipher Feedback (CFB) - ANSWER IV encrypted XOR Block
1 = Cipher 1, Cipher 1 XOR Block 2 = Cipher 2
Output Feedback (OFB) - ANSWER IV encrypted XOR Block
1 = Cipher 1, Cipher 1 encrypted XOR Block 2 = Cipher 2
Counter Mode (CTR) - ANSWER Nonce encrypted XOR
Block 1 = Cipher 1, Nonce +1 encrypted XOR block 2 = Cipher
2
Rainbow Table - ANSWER A table of hash values and their
corresponding plaintext values that can be used to look up
password values if an attacker is able to steal a system's
encrypted password file.
HMAC - ANSWER a fixed length string of bits similar to other
hashing algorithms such as MD5 and SHA-1, but it also uses a
secret key to add some randomness to the result.
, Pigpen Cipher - ANSWER a geometric simple substitution
cipher, which exchanges letters for symbols which are
fragments of a grid
Rail Code - ANSWER scrambles text by writing it across rows
and columns
bifid cipher - ANSWER maps letters in a grid to numeric values
Playfair Cipher - ANSWER Uses a 5x5 table and a key word.
Rest of the alphabet is placed on table in alphabetic order,
skipping letters used in the keyword. You break up the message
into two character chunks and return a single character value. If
the letters appear on the same row of your table, replace them
with the letters to the right. If it is on the same column, replace
them with the letters below.
Morse Code - ANSWER a system of dots and dashes that
represent the alphabet
Ceasar Cipher - ANSWER a technique for encryption that shifts
the alphabet by some number of characters
Viginere Cipher - ANSWER using a series of different
monoalphabet ciphers selected based on the letters of a keyword.
A polyalphabetic cipher.
One-time pad - ANSWER an example of perfect (unbreakable)
encryption, which is achieved by using, only once, a random
polyalphabetic key that is as long the message itself.
Four-Square Cipher - ANSWER four squares of alphabet are
created and two characters of plain text are mapped to two
characters of cipher text
, Enigma Machine - ANSWER An example of a one time pad
encryption device.
4 Steps for obtaining a digital certificate signed by a trusted CA
- ANSWER 1. Requester generates a key-pair (one public, one
private). Public key is provided to the CA
2. Requester creates and submits a Certificate Signing Request
(CSR), along with requester's public key to the CA
3. CA generates the digital certificate for the requester
4. CA signs the requester's digital certificate with the CA's own
private key, and issues certificate to requester
2 Encoding schemes for X.509 Certificates - ANSWER -PEM
(Base64 ASCII text)
-DER (binary)
X.509 certificate file types - ANSWER -.cer (PEM and DER
formats)
-.crt, .pem, .key (PEM)
-.der (der formats)
End-to-end authentication - ANSWER User authenticates
themselves to the end service
Intermediate authentication - ANSWER Only part of the
conversation between the entities is authenticated
Stages of key/certificate management - ANSWER -
Initialization: registration, key pair generation, certificate
creation + certificate/key distribution,
certification dissemination, key backup
-Issued: Certificate retrieval, certificate validation, key recovery,
key update
-Cancellation: Certificate expiration, certificate revocation, key
history, key archiving
, Certificate Revocation Reasons - ANSWER -Issuing CA was
compromised
-The cert itself was compromised
-Certificate affiliation has changed
-Certificate has been updated/superseded
Data Encryption Standard (DES) - ANSWER Symmetric,
Block size: 64, Key size: 56, Rounds: 16
Triple Data Encryption Standard (3DES) - ANSWER
Symmetric, Block size: 64, Key size: 112, Rounds: 48
Advanced Encryption Standard (AES) - ANSWER Symmetric,
Block size: 128, Key Size: 128,192,256, Rounds: 10, 12, 14
International Data Encryption Algorithm (IDEA) - ANSWER
Symmetric, Block Size: 64, Key Size: 128, Rounds: 17+
Skipjack - ANSWER Symmetric, Block Size: 64, Key Size: 80,
Rounds: 32
Blowfish - ANSWER Symmetric, Block Size: 64, Key Size:
128, 192, 256, Rounds: 16
Twofish - ANSWER Symmetric, Block Size: 128, Key Size:
128, 192, 256, Rounds: 16
Camelia - ANSWER Symmetric, Block Size 128, Key Size:
128, 192, 256, Rounds: 18/24
Rivest Cipher 5 (RC5) - ANSWER Symmetric, Block Size: 32,
64, 128, Key Size: 0 - 2,040, Rounds: 0-255
Rivest Cipher 2 (RC2) - ANSWER Symmetric, Block Size: 64,
Key Size: 40, Rounds: 18
ASSESSMENT ACTUAL EXAM
2025/2026 QUESTIONS WITH
VERIFIED CORRECT SOLUTIONS ||
100% GUARANTEED PASS
<BRAND NEW VERSION>
Electronic Code Book (ECB) - ANSWER Block 1 encrypted =
Cipher 1, Block 2 encrypted = Cipher 2
Cipher Block Chaining (CBC) - ANSWER IV XOR Block 1 =
Cipher text 1, Cipher Text 1 XOR Block 2 = Cipher text 2.
Cipher Feedback (CFB) - ANSWER IV encrypted XOR Block
1 = Cipher 1, Cipher 1 XOR Block 2 = Cipher 2
Output Feedback (OFB) - ANSWER IV encrypted XOR Block
1 = Cipher 1, Cipher 1 encrypted XOR Block 2 = Cipher 2
Counter Mode (CTR) - ANSWER Nonce encrypted XOR
Block 1 = Cipher 1, Nonce +1 encrypted XOR block 2 = Cipher
2
Rainbow Table - ANSWER A table of hash values and their
corresponding plaintext values that can be used to look up
password values if an attacker is able to steal a system's
encrypted password file.
HMAC - ANSWER a fixed length string of bits similar to other
hashing algorithms such as MD5 and SHA-1, but it also uses a
secret key to add some randomness to the result.
, Pigpen Cipher - ANSWER a geometric simple substitution
cipher, which exchanges letters for symbols which are
fragments of a grid
Rail Code - ANSWER scrambles text by writing it across rows
and columns
bifid cipher - ANSWER maps letters in a grid to numeric values
Playfair Cipher - ANSWER Uses a 5x5 table and a key word.
Rest of the alphabet is placed on table in alphabetic order,
skipping letters used in the keyword. You break up the message
into two character chunks and return a single character value. If
the letters appear on the same row of your table, replace them
with the letters to the right. If it is on the same column, replace
them with the letters below.
Morse Code - ANSWER a system of dots and dashes that
represent the alphabet
Ceasar Cipher - ANSWER a technique for encryption that shifts
the alphabet by some number of characters
Viginere Cipher - ANSWER using a series of different
monoalphabet ciphers selected based on the letters of a keyword.
A polyalphabetic cipher.
One-time pad - ANSWER an example of perfect (unbreakable)
encryption, which is achieved by using, only once, a random
polyalphabetic key that is as long the message itself.
Four-Square Cipher - ANSWER four squares of alphabet are
created and two characters of plain text are mapped to two
characters of cipher text
, Enigma Machine - ANSWER An example of a one time pad
encryption device.
4 Steps for obtaining a digital certificate signed by a trusted CA
- ANSWER 1. Requester generates a key-pair (one public, one
private). Public key is provided to the CA
2. Requester creates and submits a Certificate Signing Request
(CSR), along with requester's public key to the CA
3. CA generates the digital certificate for the requester
4. CA signs the requester's digital certificate with the CA's own
private key, and issues certificate to requester
2 Encoding schemes for X.509 Certificates - ANSWER -PEM
(Base64 ASCII text)
-DER (binary)
X.509 certificate file types - ANSWER -.cer (PEM and DER
formats)
-.crt, .pem, .key (PEM)
-.der (der formats)
End-to-end authentication - ANSWER User authenticates
themselves to the end service
Intermediate authentication - ANSWER Only part of the
conversation between the entities is authenticated
Stages of key/certificate management - ANSWER -
Initialization: registration, key pair generation, certificate
creation + certificate/key distribution,
certification dissemination, key backup
-Issued: Certificate retrieval, certificate validation, key recovery,
key update
-Cancellation: Certificate expiration, certificate revocation, key
history, key archiving
, Certificate Revocation Reasons - ANSWER -Issuing CA was
compromised
-The cert itself was compromised
-Certificate affiliation has changed
-Certificate has been updated/superseded
Data Encryption Standard (DES) - ANSWER Symmetric,
Block size: 64, Key size: 56, Rounds: 16
Triple Data Encryption Standard (3DES) - ANSWER
Symmetric, Block size: 64, Key size: 112, Rounds: 48
Advanced Encryption Standard (AES) - ANSWER Symmetric,
Block size: 128, Key Size: 128,192,256, Rounds: 10, 12, 14
International Data Encryption Algorithm (IDEA) - ANSWER
Symmetric, Block Size: 64, Key Size: 128, Rounds: 17+
Skipjack - ANSWER Symmetric, Block Size: 64, Key Size: 80,
Rounds: 32
Blowfish - ANSWER Symmetric, Block Size: 64, Key Size:
128, 192, 256, Rounds: 16
Twofish - ANSWER Symmetric, Block Size: 128, Key Size:
128, 192, 256, Rounds: 16
Camelia - ANSWER Symmetric, Block Size 128, Key Size:
128, 192, 256, Rounds: 18/24
Rivest Cipher 5 (RC5) - ANSWER Symmetric, Block Size: 32,
64, 128, Key Size: 0 - 2,040, Rounds: 0-255
Rivest Cipher 2 (RC2) - ANSWER Symmetric, Block Size: 64,
Key Size: 40, Rounds: 18
