Blockchain Technology Types of Blockchain Networks 3

Question 1

Which blockchain type gives a single company full administrative control over who can read and write to the ledger?

Accepted Answer

Private blockchain

Answer

A private blockchain is owned and controlled by a single organization that sets all access permissions.

Question 2

Hyperledger Fabric is best categorized as which type of blockchain?

Accepted Answer

Private or consortium permissioned blockchain

Answer

Hyperledger Fabric is a permissioned blockchain framework designed for enterprise consortiums and private networks.

Question 3

A supply chain involving five competing companies wants a shared ledger where all five control validation equally. Which model fits best?

Accepted Answer

Consortium blockchain

Answer

A consortium blockchain distributes governance equally among multiple organizations, making it ideal for competing companies collaborating.

Question 4

What is the primary security advantage of public blockchains over private blockchains?

Accepted Answer

Immutability enforced by a large decentralized network

Answer

Public blockchains derive their security from thousands of independent nodes, making tampering computationally infeasible.

Question 5

Which statement about sidechains is correct?

Accepted Answer

Sidechains operate independently but can transfer assets to and from a main chain

Answer

Sidechains run parallel to a main chain with a two-way peg that allows assets to move between them.

Blockchain Practice Test