Properly encrypted data stored in the distributed ledger adequately protects data in both the short-term and the long-termA . TrueB . FalseView AnswerAnswer: A
Which of the following types of attacks are disincentivized in the long-term on blockchains like Bitcoin?A . TimewarpB . Double-SpendC . Selfish MiningD . SPV MiningView AnswerAnswer: D
The decentralization of the blockchain makes it immune to traditional Denial of Service attacksA . TrueB . FalseView AnswerAnswer: B
Which of the following blockchains separates transaction validation and ordering of transactions in blocks into separate steps?A . HyperledgerB . EthereumC . CordaD . All of the aboveView AnswerAnswer: A
Which blockchain security control either risks centralization or permanently divergent chains?A . Random Neighbor SelectionB . Permissioned BlockchainsC . CheckpointsD . Private BlockchainsView AnswerAnswer: D
Implementing data access as a blockchain smart contract is a good solution for generating an audit log of access to sensitive dataA . TrueB . FalseView AnswerAnswer: A
What is the easiest way to steal cryptocurrency from a user?A . Private key theftB . Double-spend attackC . Consensus hijackingD . Eclipse attackE . None of the aboveView AnswerAnswer: A
Which smart contract auditing strategy determines the inputs that will cause different parts of the code to run?A . Symbolic ExecutionB . Taint AnalysisC . Dynamic Code AnalysisD . Control Flow AnalysisView AnswerAnswer: A
The Bitcoin hack demonstrated that there are circumstances in which the principles of blockchain must be violated to protect the blockchain.A . TrueB . FalseView AnswerAnswer: A
Which of the following does NOT rely on the security of public key cryptography?A . Stealth AddressB . Confidential TransactionC . Ring SignatureD . Zero-Knowledge ProofView AnswerAnswer: D
