A blockchain network wants to fix a critical security vulnerability that requires changing the consensus rules in a way that old nodes will reject new blocks. The team wants to minimize the risk of a permanent chain split. What is the best approach?

Ask miners to manually stop producing blocks until all nodes upgrade

Ignore the vulnerability and wait for the next scheduled upgrade

Coordinate a hard fork with a clear activation block height and encourage all node operators to upgrade before that block

Use a soft fork to fix the vulnerability

A blockchain network is planning a hard fork. The development team has implemented the new software, but they are unsure whether the community will support it. Which group's support is most critical for the fork to be adopted without a split?

Node operators, because they must upgrade their software to follow the new chain

Token holders, because they can vote on the proposal

Wallet developers, because they create user interfaces

Exchanges, because they list the token

A blockchain project is planning a major upgrade. The core developers have proposed a new feature, but miners are concerned about its impact on transaction fees. Token holders are also divided. What is the most effective way to coordinate the upgrade?

Postpone the upgrade indefinitely to avoid conflict

Let miners decide because they have the most at stake in transaction fees

Hold a community vote among token holders and then have miners signal their support before activation

Have the core developers unilaterally implement the upgrade and release it as a mandatory update

A blockchain network is considering a proposal to reduce the block time from 10 minutes to 5 minutes. This change is not backward-compatible. The development team is concerned about the risk of a chain split. Which factor is most critical in determining whether a chain split occurs?

The number of exchanges that list the token

The number of tokens held by the development team

The total market capitalization of the network

The percentage of nodes that upgrade to the new software before the activation block

EC-CouncilBlockchain Developer Certification

Domain 1Objective 6

Governance, Upgrades, and Forks BDC Practice Questions (Page 3)

Part of the Blockchain Fundamentals and Architecture domain, which makes up ~14% of our current practice bank.

50questions here

10free pages

7concepts

Questions 11–15

11application · medium
A blockchain network wants to fix a critical security vulnerability that requires changing the consensus rules in a way that old nodes will reject new blocks. The team wants to minimize the risk of a permanent chain split. What is the best approach?
Select an answer first
12application · medium
A blockchain network is planning a hard fork. The development team has implemented the new software, but they are unsure whether the community will support it. Which group's support is most critical for the fork to be adopted without a split?
Select an answer first
13application · medium
A blockchain project is planning a major upgrade. The core developers have proposed a new feature, but miners are concerned about its impact on transaction fees. Token holders are also divided. What is the most effective way to coordinate the upgrade?
Select an answer first
14application · medium
A blockchain network is considering a proposal to reduce the block time from 10 minutes to 5 minutes. This change is not backward-compatible. The development team is concerned about the risk of a chain split. Which factor is most critical in determining whether a chain split occurs?
Select an answer first
15application · easy
A blockchain network wants to introduce a new feature that is backward-compatible, meaning old nodes can still validate new blocks. The upgrade will be activated when a certain percentage of miners signal readiness. What type of fork is this?
Select an answer first

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