Cipher feedback - Study guides, Class notes & Summaries
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WGU C839 - Introduction to Cryptography| 190 QUESTIONS| WITH COMPLETE SOLUTIONS.
- Exam (elaborations) • 19 pages • 2023
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WGU C839 - Introduction to Cryptography | 190 QUESTIONS | WITH COMPLETE SOLUTIONS. 
Serpent CORRECT ANSWERS: Symmetric Block Cipher 
Block Size: 128 bits 
Key Size: 128, 192, or 256 bits 
Rounds: 32 
Network: Substitution-Permutation 
Tiny Encryption Algorithm (TEA) CORRECT ANSWERS: Symmetric Block Cipher 
Block Size: 64 bits 
Key Size: 128 bits 
Cryptography CORRECT ANSWERS: Deciphering secret writings, kryptos means hidden and 
grafo means write. Must not be readable by interlopers over secure...
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WGU Course C839 - Intro to Cryptography Quizlet by Brian MacFarlane exam questions and answers
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What type of encryption uses different keys to encrypt and decrypt the message? 
 
A Symmetric 
B Private key 
C Secure 
D Asymmetric 
D 
 
 
 
The most widely used asymmetric encryption algorithm is what? 
 
A RSA 
B Vigenere 
C DES 
D Caesar Cipher 
A 
 
 
 
Original, unencrypted information is referred to as ____. 
 
A text 
B plaintext 
C cleantext 
D ciphertext 
B 
 
 
 
Which of the following is NOT an asymmetric system? 
 
A PGP 
B RSA 
C SSL 
D DES 
D 
 
 
 
In order for User A to send U...
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CISSP Practice Questions & Answers: Updated A+ Guide
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Which of the following are NOT operating modes of the DES encryption algorithm? 
A) CBC 
B) ECB 
C) CFB 
D) OFB 
E) CBE (Ans- e. 
DES has four modes of operations: 
CBC - Cipher Block Chaining. In CBC mode, each plaintext block is XORed with the previous cipher text block and then encrypted. 
ECB - Electronic Code Book. In ECB mode, each plaintext block is encrypted independently with the block cipher. 
CFB - Cipher Feedback. In CFB mode, the previous cipher text block is encrypted and the outpu...
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GMU IT 366 Midterm Exam Study Guide Questions with Verified Solutions
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GMU IT 366 Midterm Exam Study Guide 
Questions with Verified Solutions 
 
At each layer, the unit of data has a different name. What is the general name for this data unit? 
What are the data units used at ISO OSI layers 1 through 4? The general name for this data 
unit is a Protocol Data Unit (PDU). 
 
At ISO OSI Layers 1-4 (from top to bottom): 
L4 Application Layer: "segment" 
L3 Network Layer: "packet" 
L2 Data Link Layer: "frame" 
L1 Physical Layer: "bits/bit stream" 
 
Does the ter...
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WGU Course C839 - Intro to Cryptography Questions Correctly Answered 2023 GRADED A
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WGU Course C839 - Intro 
to Cryptography 
Questions Correctly 
Answered 2023 GRADED 
A 
What type of encryption uses different keys to encrypt and decrypt the message? 
A Symmetric 
B Private key 
C Secure 
D Asymmetric - Answer D 
The most widely used asymmetric encryption algorithm is what? 
A RSA 
B Vigenere 
C DES 
D Caesar Cipher - Answer A 
Original, unencrypted information is referred to as ____. 
A text 
B plaintext 
C cleantext 
D ciphertext - Answer B 
Which of the following is NOT...
And that's how you make extra money
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WGU C839 - Intro to Cryptography Exam 2023-2024 Questions and Answers (VERIFIED).
- Exam (elaborations) • 34 pages • 2023
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WGU C839 - Intro to Cryptography Exam 2023-2024 Questions and Answers (VERIFIED). 
What type of encryption uses different keys to encrypt and decrypt the message? 
A Symmetric 
B Private key 
C Secure 
D Asymmetric - Answer D 
The most widely used asymmetric encryption algorithm is what? 
A RSA 
B Vigenere 
C DES 
D Caesar Cipher - Answer A 
Original, unencrypted information is referred to as ____. 
A text 
B plaintext 
C cleantext 
D ciphertext - Answer B 
Which of the following is NOT an asymm...
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WGU Course C839 - Intro to Cryptography Questions and Answers | Latest Update Graded A+
- Exam (elaborations) • 35 pages • 2023
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Available in package deal
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WGU Course C839 - Intro to Cryptography Questions and Answers | Latest Update Graded A+. What type of encryption uses different keys to encrypt and decrypt the message? 
A Symmetric 
B Private key 
C Secure 
D Asymmetric - Answer D 
The most widely used asymmetric encryption algorithm is what? 
A RSA 
B Vigenere 
C DES 
D Caesar Cipher - Answer A 
Original, unencrypted information is referred to as ____. 
A text 
B plaintext 
C cleantext 
D ciphertext - Answer B 
Which of the following is NOT an...
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WGU C839 - Intro to Cryptography Exam 2023-2024 Questions and Answers (VERIFIED).
- Exam (elaborations) • 34 pages • 2023
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WGU C839 - Intro to Cryptography Exam 2023-2024 Questions and Answers (VERIFIED). 
What type of encryption uses different keys to encrypt and decrypt the message? 
A Symmetric 
B Private key 
C Secure 
D Asymmetric - Answer D 
The most widely used asymmetric encryption algorithm is what? 
A RSA 
B Vigenere 
C DES 
D Caesar Cipher - Answer A 
Original, unencrypted information is referred to as ____. 
A text 
B plaintext 
C cleantext 
D ciphertext - Answer B 
Which of the following is NOT an asymm...
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WGU Course C839 - Intro to Cryptography: Questions With Answers | Latest Graded A+ (2023/2024)
- Exam (elaborations) • 35 pages • 2023
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WGU Course C839 - Intro to Cryptography: Questions With Answers | Latest Graded A+ (2023/2024). Which of the following is a cryptographic protocol that allows two parties to establish 
a shared key over an insecure channel? 
A Elliptic Curve 
B RSA 
C MD5 
D Diffie-Hellman - Answer D 
A _________ is a digital representation of information that identifies you as a 
relevant entity by a trusted third party? 
A Digital Signature 
B Hash 
C Ownership stamp 
D Digest - Answer A 
What is the standard ...
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WGU - D334 Revision Exam Questions And All Correct Answers.
- Exam (elaborations) • 4 pages • 2024
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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 ...
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