WGU Introduction to Cryptography HNO1 (Introduction-to-Cryptography) Free Practice Test

Question 1

(What describes how Counter (CTR) mode encryption functions?)

A. Converts the block cipher into a stream cipher, then uses a counter value and a nonce to encrypt the data

B. Encrypts each block with the same key, where each block is independent of the others

C. Uses a self-synchronizing stream cipher where the IV is encrypted and XORed with the data stream one bit at a time

D. Uses an IV to encrypt the first block, then uses the result of the encryption to encrypt the next block

Correct Answer: A

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Question 2

(Which of the following best describes lightweight cryptography?)

A. A method of encryption that is outdated and rarely used

B. Cryptographic methods that are only applicable in military settings

C. Cryptographic algorithms designed for resource-constrained environments

D. Cryptography that focuses solely on increasing encryption strength

Correct Answer: C

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Question 3

(Which type of exploit involves looking for different inputs that generate the same hash?)

A. Linear cryptanalysis

B. Birthday attack

C. Algebraic attack

D. Differential cryptanalysis

Correct Answer: B

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Question 4

(Which wireless security standard uses an authentication server with 802.1X and EAP?)

A. WPA-PSK

B. TKIP

C. WEP

D. WPA-Enterprise

Correct Answer: D

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Question 5

(Which mode of encryption converts data into a stream encryption and then uses a counter value and a nonce to encrypt the data?)

A. Electronic Codebook (ECB)

B. Cipher Feedback (CFB)

C. Cipher Block Chaining (CBC)

D. Counter (CTR)

Correct Answer: D

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Question 6

(What is the relationship between Secure Sockets Layer (SSL) and Transport Layer Security (TLS)?)

A. SSL and TLS are identical in function and security.

B. TLS replaced SSL to provide improved security.

C. SSL is only used in email encryption.

D. SSL is the replacement of TLS.

Correct Answer: B

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Question 7

(How often are transactions added to a blockchain?)

A. Approximately every 10 minutes

B. Approximately every 1 hour

C. Approximately every 30 minutes

D. Approximately every 24 hours

Correct Answer: A

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Question 8

(Which component is used to verify the integrity of a message?)

A. TKIP

B. AES

C. HMAC

D. IV

Correct Answer: C

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Question 9

(Which attack may take the longest amount of time to achieve success?)

A. Dictionary

B. Brute-force

C. Rainbow table

D. Birthday

Correct Answer: B

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Question 10

(What are the primary characteristics of Bitcoin proof of work?)

A. Difficult to produce and difficult to verify

B. Easy to produce and difficult to verify

C. Difficult to produce and easy to verify

D. Easy to produce and easy to verify

Correct Answer: C

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WGU Introduction to Cryptography HNO1 (Introduction-to-Cryptography) Free Practice Test