CBSA Online Practice Questions and Answers
What are two challenges with using a Proof of Work algorithm? (Select two.)
A. Mining pools not allowed
B. Difficulty rate goes done every year.
C. Expensive
D. Power Intensive
What type of encryption is shown below and is commonly used in blockchain cryptography?
A. Diffie-Hellman
B. Asymmetric Encryption
C. Synchronous
D. Asynchronous
E. Symmetric Encryption
Smart Contracts are generally written in specific programming languages. Which one is NOT a language for smart contracts?
A. .Net
B. Viper
C. LLL
D. Solidity
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?
A. Crowfunding
B. ICO
C. Audit
D. IPO
How are "assets" in Hyperledger Fabric represented? (Select two.)
A. JSON
B. Node
C. YAML
D. Binary
E. Deployment Manager
With Hyperledger Fabric ledger, it supports both levelDB / CouchDB for state data?
A. FALSE
B. TRUE
In what year did a whitepaper that was published by "Satoshi Nakamoto" outlined a solution to the Byzantine Generals problem?
A. 2006
B. 2009
C. 2008
D. 2010
Which cryptocurrency is also known as "Smart Money" in the blockchain world?
A. Ether
B. BTC
C. Monero
D. Litecoin
Consider the following scenario: Due to consistent inaccuracies and outdated real estate listings, a residential real estate company wants to build a blockchain solution that accurately depicts which homes (assets) are available for purchase across all countries/provinces. All available homes should be publicly viewable by the general consumer audience, but certain details of the home, such as history of maintenance, should only be viewable by licensed real estate professionals.
Which architecture would best solve the product need?
A. Public data hosted on a public blockchain, Privileged data security hoisted on a private database
B. The entire solution built on a private blockchain with proper permissions for both public and privileged data
C. Public and privileged data on hybrid blockchain will Proof of Stake consensus
D. Public data hosted on a public blockchain; Privileged data hosted on a private blockchain
Consider the following scenario: A large department store chain is being pressured by lawmakers to provide evidence that proves the store's clothing is not produced through child labor. This is no easy task currently due to the store's clothing being transferred between at least 6 different parties in between creation and placement at the storefront. The store chain is considering the use of blockchain to solve their problem. Discretion in the reading and writing of transactions is highly important to the store chain to protect its proprietary interests.
Which solution would best solve the product need?
A. Use a public blockchain that supports assets, then create a new clothing asset for each item created. When the clothing item is transferred to the next party in the process, require that the associated blockchain asset be transferred to the next party's blockchain account with relevant metadata. The lawmakers can now view the transactions and transfers at any time.
B. Use a permissioned blockchain to build the technology. Require every party involved in the process to host a node on you network. Create a new clothing asset for each item created. When the clothing item is transferred to the next party in the process, have the previous party use your web portal to initialize a chaincode Smart Contract to transfer control of the asset. When the next party receives the asset have them use your web portal to initialize a chaincode Smart Contracts to acknowledge receipt of the asset. Provide read-only permissions to the lawmakers so they can receive the evidence they are looking for.
C. Both options are equally suitable
D. None of the above