Blockchain Challenges: Scalability, Regulation, and Security

Question 1

The lack of comprehensive regulatory frameworks for Blockchain usage highlights the challenge of:

Accepted Answer

Regulation

Answer

Security

Answer

Cost

Answer

Scalability

Question 2

Which of the following is NOT a potential vulnerability in Blockchain security?

Accepted Answer

Phishing

Answer

51% attack

Answer

Transaction malleability

Answer

Forking

Question 3

The immutability of Blockchain records refers to:

Accepted Answer

Resistance to tampering

Answer

High data storage costs

Answer

Ease of data retrieval

Answer

Vulnerability to hacking

Question 4

Which of the following consensus mechanisms is used in Blockchain networks to validate transactions?

Accepted Answer

Both Proof of Work and Proof of Stake

Answer

Proof of Work

Answer

Proof of Stake

Answer

Majority Voting

Question 5

Which of the following is a significant limitation of Blockchain in terms of scalability?

Accepted Answer

Limited transaction throughput

Answer

Increased storage costs

Answer

High latency

Answer

Lack of decentralization

Question 6

Which of the following is a potential solution to address the regulatory complexities surrounding Blockchain technology?

Accepted Answer

Clear and consistent regulations

Answer

User education campaigns

Answer

Technological advancements

Answer

Increased adoption

Question 7

Which of the following is a defining characteristic of a decentralized Blockchain network?

Accepted Answer

Absence of a central authority

Answer

High transaction costs

Answer

Slow transaction processing

Answer

易于被黑客攻击

Question 8

Which of the following is not a widely recognized challenge facing Blockchain technology?

Accepted Answer

Lack of high transaction fees

Answer

Security

Answer

Regulation

Answer

Scalability

Question 9

The inability of Blockchain to process a large number of transactions efficiently is referred to as:

Accepted Answer

Scalability

Answer

Interoperability

Answer

Consensus

Answer

Immutability

Question 10

The absence of clear and comprehensive regulatory frameworks for Blockchain technology primarily affects:

Accepted Answer

Legal compliance and adoption

Answer

Transaction fees

Answer

Block size

Answer

Consensus mechanisms

Question 11

The challenge of interoperability in Blockchain refers to the:

Accepted Answer

Ability of different Blockchain networks to communicate and exchange data seamlessly

Answer

Technical complexity of Blockchain development

Answer

Financial cost of implementing Blockchain solutions

Question 12

Blockchain technology's feature that can potentially assist in overcoming its scalability challenges is:

Accepted Answer

Distributed and decentralized ledger system

Answer

High transaction fees

Answer

Presence of a single point of failure

Answer

Centralized control and management

Question 13

The ongoing development and advancements in Blockchain technology and its underlying infrastructure are anticipated to:

Accepted Answer

Potentially resolve or mitigate many of the current challenges it faces

Answer

Completely eliminate all challenges associated with Blockchain

Answer

Impede the widespread adoption and implementation of Blockchain

Answer

Render Blockchain obsolete and irrelevant

Question 14

Which of the following is NOT a potential solution to address Blockchain's scalability challenges?

Accepted Answer

Centralized databases

Answer

Sharding

Answer

Off-chain transactions

Answer

Layer-2 protocols

Question 15

Which of the following is NOT a major challenge facing the scalability of blockchain technology?

Accepted Answer

Limited use cases for decentralized applications

Answer

High transaction throughput limitations

Answer

Increased network latency with growing transaction volume

Answer

Difficulty in handling large amounts of data

Question 16

What is a potential solution to the problem of slow transaction speeds on public blockchains?

Accepted Answer

Implementation of sharding techniques

Answer

Centralized control of transaction validation

Answer

Limiting the number of transactions per block

Answer

Increasing the block reward for miners

Question 17

Which of the following is NOT a potential benefit of increased regulatory clarity for blockchain technology?

Accepted Answer

Increased reliance on centralized intermediaries

Answer

Enhanced investor confidence

Answer

Reduced risk of fraud and illegal activities

Answer

Greater mainstream adoption

Question 18

How can the risk of a 51% attack on a blockchain be mitigated?

Accepted Answer

By increasing the decentralization of the network

Answer

By relying on centralized authorities for security

Answer

By reducing the block reward for miners

Answer

By implementing stronger encryption protocols

Question 19

What is a potential solution to the challenge of high energy consumption in blockchain networks?

Accepted Answer

Transitioning to more energy-efficient consensus mechanisms like Proof-of-Stake

Answer

Reducing the block reward for miners

Answer

Increasing the number of transactions per block

Question 20

What is the main purpose of using a smart contract in a blockchain application?

Accepted Answer

To automate the execution of agreements and transactions

Answer

To enhance the security of blockchain networks

Answer

To improve the scalability of blockchain transactions

Question 21

Which of the following is a potential solution to address the scalability issues of Blockchain?

Accepted Answer

Sharding

Answer

Increased transaction fees

Answer

Centralized control

Answer

Limited access to the network

Question 22

What is the primary vulnerability of Blockchain to security threats?

Accepted Answer

Smart contract vulnerabilities

Answer

Lack of anonymity

Answer

Limited transaction capacity

Answer

Centralized control

Question 23

What is the primary concern associated with the immutability of Blockchain?

Accepted Answer

Difficulty in correcting errors or fraudulent transactions

Answer

Lack of transparency

Answer

Data can be easily modified

Question 24

Which of the following is a challenge associated with the energy consumption of Blockchain?

Accepted Answer

Environmental impact

Answer

Limited transaction capacity

Answer

Lack of security

Question 25

How can Blockchain contribute to improved interoperability?

Accepted Answer

Enabling seamless data exchange across different systems

Answer

Centralizing data storage

Answer

Creating isolated systems

Question 26

What is the main challenge associated with the adoption of Blockchain by mainstream businesses?

Accepted Answer

Lack of understanding and awareness

Answer

Limited scalability

Answer

Limited security features

Answer

High transaction costs

Question 27

What is the significance of consensus mechanisms in addressing Blockchain challenges?

Accepted Answer

Ensuring the integrity and security of the network

Answer

Facilitating data privacy

Answer

Reducing energy consumption

Answer

Increasing transaction speed