Senior Blockchain Fundamentals

Test your Senior-level Blockchain Cryptocurrency Blockchain Fundamentals skills in Emerging Technologies. This timed assessment evaluates your expertise in Information Technology.

Duration: 5 minutes

•40 questions

Time Remaining: 05:00

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40 questions remaining

Question 1 of 40Assessment

What is a 'Long-Range Attack' in the context of Proof of Stake (PoS) blockchains?

A. An attack where a miner uses high-latency satellite connections to delay block propagation to distant nodes.

B. A strategy where an attacker builds a parallel chain from the genesis block using keys they previously owned.

C. An attempt to exhaust the memory of validator nodes by sending a massive burst of small, invalid transactions.

D. A scenario where a validator creates a fork that is thousands of blocks longer than the current canonical chain.

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