(WGU)
D334 Introduction to Cryptography - WGU Western
Governors University
D334 (Exam Code HNO1) Intro to Cryptography WGU
Assessment Exam
Course Title and Number: HNO1: WGU D334 Assessment
Exam
Exam Title: Certification and Assessment
Exam Date: Exam 2025- 2026
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Examination
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Instructions:
1. Read each question carefully.
2. Answer all questions.
3. Use the provided answer sheet to mark your responses.
4. Ensure all answers are final before submitting the exam.
5. Please answer each question below and click Submit when you
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2025- 2026
D334 (Exam Code HNO1) Intro to Cryptography WGU
Assessment
D334 Introduction to Cryptography
WGU Western Governors University
Read All Instructions Carefully and Answer All the
Questions Correctly Good Luck: -
1. Which protocol indicates the virtual private network
(VPN) is using Authen- tication Header (AH)?
A. 48
B. 50
C. 51
D. 58: 51
2. Which cipher uses a grid to map letters into numeric
values?
A. Bifid
B. SHA-1
C. Caesar
D. Vigenère: Bifid
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3. Which cipher uses a five-by-five matrix with
nonrepeating characters?
A. Playfair
B. Rail code
C. Pigpen
D. Vigenère: Playfair
4. What does a frequency analysis attack to break
encryption involve?
A. Analyzing ciphertext to identify text variation and
comparing the text to standard English characters
B. Performing an exhaustive search to attempt every
possible mapping or key
C. Interfering between two parties and sometimes
intercepting or modifying data in the
communication stream
D. Identifying part of the ciphertext and the
corresponding plaintext: Analyzing ciphertext to
identify text variation and comparing the text to standard
English characters
5. Which technique should a security analyst use to
determine the key length in a Vigenère cipher?
A. Frequency analysis
B. Brute force
C. Kasiski examination
D. Known plaintext: Kasiski examination
6. What defines a prime number?
A. Only has factors of itself and 1
B. Only has factors of itself and 2
C. Evenly divisible by 3.14
D. Evenly divisible by 10: Only has factors of itself and 1
7. What is 29 mod 12?
A. 0
B. 3
C. 5
D. 7: 5
8. Which type of cipher is ChaCha?
A. Asymmetric
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