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FIND- search this: WGU D334 Introduction to Cryptography STUVIAGRADES
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WGU D334 Introduction to Cryptography EXAM A & B COMPLETE 500+ QUESTIONS AND CORRECT
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WGU D334 Introduction to Cryptography EXAM
QUESTION: What is the purpose of a digital signature in Bitcoin transactions?
- To encrypt the transaction
- To prove ownership of private keys without revealing them
- To hash transaction data
- To create new Bitcoin - ANSWER-B) To prove ownership of private keys without revealing
them
QUESTION: Why does Bitcoin use a Proof-of-Work consensus mechanism? 1 / 4
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- To speed up transactions
- To prevent double-spending and secure the network
- To encrypt private keys
- To compress the blockchain - ANSWER-B) To prevent double-spending and secure the
network
QUESTION: What happens when a miner successfully solves a cryptographic puzzle in Bitcoin?
- They receive Bitcoin rewards and add a new block
- The transaction is reversed
- The blockchain is reset
- All previous blocks are rehashed - ANSWER-A) They receive Bitcoin rewards and add a new
block What cryptographic hash function does Bitcoin use for mining?
A) SHA-256
B) MD5
C) AES-128
D) RSA - ANSWER-A) SHA-256
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QUESTION: How does Bitcoin use cryptographic hashing?
- To encrypt transactions
- To sign blocks digitally
- To secure transaction integrity and mining through proof-of-work
- To compress transaction data - ANSWER-C) To secure transaction integrity and mining
through proof-of-work
QUESTION: What type of cryptography is used in Bitcoin addresses?
- Symmetric
- Asymmetric
- Hash-based
- Homomorphic - ANSWER-B) Asymmetric
QUESTION: What cryptographic curve does Bitcoin use for public-private key pairs?
A) P-521
- secp256k1
- Curve25519
- Ed25519 - ANSWER-B) secp256k1 3 / 4
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QUESTION: What does a Bitcoin address represent?
- A hash of the public key
- The private key itself
- A direct reference to blockchain transactions
- An encrypted wallet - ANSWER-A) A hash of the public key
QUESTION: Why is Bitcoin resistant to tampering?
- Transactions are encrypted
- Miners digitally sign each transaction
- Blocks are linked cryptographically using hash functions
- Transactions are stored offline - ANSWER-C) Blocks are linked cryptographically using hash
functions
QUESTION: How does Bitcoin prevent double-spending?
- By encrypting all transactions
- Through Proof-of-Work consensus
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