Blockchain CBSP 問題練習

Question No : 1
If an attacker can find two values that hash to the same output what is it called?

• A.Match
• B.Intersection
• C.Collision
• D.Correlation

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Question No : 2
This sample code is vulnerable to which of the following attacks? Select all that apply.

• A.Reentrancy
• B.Unchecked Return Values
• C.Arithmetic
• D.Race Conditions

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Question No : 3
Which algorithm was adopted by Bitcoin's creator for use as a consensus mechanism?

• A.Proof of Stake
• B.Proof of Space
• C.Proof of Work
• D.Proof of Activity

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Question No : 4
Which of the following is designed to allow someone to prove they know a secret without revealing it?

• A.Confidential Transaction
• B.Ring Signature
• C.Zero-Knowledge Proof
• D.Stealth Address

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Question No : 5
In which blockchain consensus algorithm does a user pay (give up coin forever) to participate in consensus?

• A.Proof of Burn
• B.Proof of Work
• C.Proof of Stake
• D.Proof of Activity
• E.None of the above

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Question No : 6
Spinning up a large number of temporary mining servers is likely part of what type of attack?

• A.Routing
• B.Denial of Service
• C.Sybil
• D.Eclipse

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Question No : 7
In which of the following attacks targeting Proof of Stake does an attacker create a divergent chain and race to make their chain longer than the real chain?

• A.Selfish Mining Attack
• B.Long-Range Attack
• C.Double-Spend Attack
• D.51% Attack

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Question No : 8
Compromising blockchain accounts is beneficial to which of the following types ot attacks?

• A.51% Attack
• B.Eclipse Attack
• C.Routing Attack
• D.Sybil Attack
• E.All of the above

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Question No : 9
Which of the following blockchains has a built-in consensus algorithm?

• A.Ethereum
• B.Corda
• C.Hyperledger

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Question No : 10
Sidechains can benefit the mainchain in what ways? Select all that apply

• A.Speed
• B.Functionality
• C.Scalability
• D.Security

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Question No : 11
Malware infections of blockchain nodes can compromise the security of the blockchain's consensus algorithm.

• A.True
• B.False

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Question No : 12
The code of smart contracts that are "self-destructed" is no longer visible to the blockchain network

• A.True
• B.False

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Question No : 13
Which of the following biockchains uses a channel-focused architectural design?

• A.Hyperledger
• B.Corda
• C.Ethereum

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Question No : 14
Which of the following is NOT a common regulatory requirement tor businesses?

• A.Data transparency
• B.Data encryption
• C.Personal data protection
• D.Data control

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Question No : 15
Properly encrypted data stored in the distributed ledger adequately protects data in both the short-term and the long-term

• A.True
• B.False

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