Which of the following blockchains does NOT use broadcast communications?
A. Hyperledger
B. Ethereum
C. Corda
Poorly designed smart contracts can only be disabled on the blockchain if this functionality was built in from the beginning.
A. True
B. False
Quantum computers threaten traditional cryptography because they provide polynomial solutions to mathematically "hard" problems.
A. True
B. False
Which of the following is NOT an essential part of Confidential Transactions?
A. Zero-Knowledge Proof
B. Ring Signature
C. Elliptic Curve Cryptography
D. Pederson Commitment
Which smart contract vulnerability allows an attacker to make a profit off a smart contract cryptocurrency exchange like Bancor?
A. Arithmetic
B. Access Control
C. Race Conditions
D. Reentrancy
A blockchain-based solution best achieves which of the following goals?
A. Data control
B. Data deletion
C. Data retention
D. Data privacy
The decentralization of the blockchain makes it immune to traditional Denial of Service attacks.
A. True
B. False
Which blockchain security control either risks centralization or permanently divergent chains?
A. Random Neighbor Selection
B. Permissioned Blockchains
C. Checkpoints
D. Private Blockchains
All smart contracts are audited for correctness and checked for malicious code before being uploaded to the blockchain.
A. True
B. False
Implementing data access as a blockchain smart contract is a good solution for generating an audit log of access to sensitive data.
A. True
B. False
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