Free EXIN Blockchain Foundation Exam BLOCKCHAINF Exam Practice Test

Which of these applications would be suited for a private Blockchain?

• financial transactions
• manufacturing supply chain
• medical records
• food traceability
• All of the above

Cryptocurrencies have all the same characteristics as fiat currencies?

• True
• False

Why is a private Blockchain used instead of a public one?

• To limit user access and permissions
• It is less expensive to develop
• It requires less mining power than a public Blockchain
• It requires fewer administrators to manage it

Blockchain work best when they are .

• Combined with other technologies
• Used for financial applications
• Used alone
• Used as an alternative to a database

In 2009, Bitcoin was created by .

• VitalikButerin
• Satoshi Nakamoto
• Hyperledger Foundation
• A Banking Consortium

What is a hash function?

• A one-way function that converts input to a unique string output
• A function that stores data behind a key
• A two-way function used for condensing information
• The block-ID of the block
• All the above

What are the drawbacks of using Blockchain? Select all that apply

• High cost of developers
• Changing technology and the lack of a stable standard
• Its use of cryptography
• Its use of new applications

A Blockchain provides .

• true information by all parties involved
• a trusted transaction between untrusted parties
• the easiest way to conduct international transactions
• only trusted banks for conducting transactions

What is a Blockchain?

• A digital currency
• An unchangeable record
• A database of usable secret data
• A Smart Contract
• All of the above

Transactions per second (TPS) for a Proof-of-Work Blockchain are approximately?

• 24K per second
• 175K per second
• Only limited to the number of nodes on the network
• 7-15 per second
• None of the above