Free BTA Certified Blockchain Solution Architect Exam CBSA Exam Practice Test

What is the accepted best practice for preventing contract addresses from changing when a new contract is released?

• Move your contract to a new blockchain
  
• Delete the old contract and add the new version in its place
  
• Addresses always change so use a calling contract
  
• Use the ''- -addressForce'' parameter when releasing a new contract
  

When considering a new ERC20 token its best to consider using ____________________.

• Use a template from AWS
  
• Audited Implementation
  
• Start a new one
  
• Copy from existing token
  

What is another name for blockchains that run adjacent to the blockchains and also offer more scope for processing contracts?

• Adchains
  
• Funnelchains
  
• Multichains
  
• Sidechains
  

In public key cryptography, the public key is used to:

• Sign/approve any transaction/action that might be made by the holder of the key pair
  
• Verify the digital signature of a given key pair
  
• Decrypt the private key so valid transactions/actions can be performed
  
• Encrypt the private key
  

Your company is looking to develop a new token and raise funds for this new platform.What is the process your company would like go thru to raise funds?

• Crowfunding
  
• ICO
  
• Audit
  
• IPO
  

Blockchain provenance is defined as _______________?

• Information sent to the blockchain and written to the blockchain.
  
• Recording the history of data, from its last block to various stages of the data lifecycle
  
• Recording the history of data, from its inception to various stages of the data lifecycle.
  
• Once a transaction has been written and committed to the ledger it cannot be changed.
  

What does the 20 in ERC20 mean or relate to?

• BIP number
  
• Release number
  
• Update number
  
• Proposal ID number
  

Ethereum has a metric system of denominations used as units of ether.What is the smallest denomination of Ether?

• Kwei
  
• Shannon
  
• Wei
  
• Finney
  

Which is the right order for Ethereum Denominations?

• Finney, Szabo, Mether, Wei
  
• Gwei, Szabo, Finney, Ether
  
• Finney, Szabo, Mether, Gwei
  
• Wei, Finney, Szabo, Ether, Tether
  

How many satoshis are in 1 bitcoin and how many wei in an Ether?(Select two.)

• 1,000,000,000,000,000,000
  
• 1,000,000,000,000,000
  
• 1,000,000,000
  
• 10,000
  
• 1,000,000,000,000