Blockchain CBSA Practice Test - Questions Answers, Page 6

Reference: http://hyperledger-fabric.readthedocs.io/en/release-1.1/chaincode.html

Metamask is essentially a bridge.

Reference: https://datawookie.netlify.com/blog/2018/01/ethereum-running-a-node/

A proof of work system is vulnerable to a particular type of attack called the "P+ epsilon attack". In order to understand how this attack works we must define some terms before hand. Un-Coordinated Choice Model: An uncoordinated choice model is a model where all the participants don't have the incentive to work with one another. The participants may form groups but at no time is the group big enough to become a majority.

Reference: https://blockgeeks.com/guides/hypothetical-attacks-on-cryptocurrencies/

ERC stands for Ethereum Request for Comments. This is an official protocol for proposing improvements to the Ethereum network. '20' is the unique proposal ID number.

Reference: https://support.exodus.io/article/108-what-is-an-erc20-token-and-does-exodus-support-it

To write smart contracts there are a few different languages: Solidity, which is like JavaScript and has .sol as a file extension, Serpent, Python-like with extension .se, and a 3rd, LLL, based on Lisp. Serpent was popular a while back but Solidity is the most popular right now and more robust, so just use Solidity. You prefer Python? Use Solidity.

Reference: https://medium.com/@ConsenSys/a-101-noob-intro-to-programming-smart-contracts-on-ethereum-695d15c1dab4

The number of peers required to endorse a transaction is driven by the endorsement policy that is specified at chaincode deployment time.

Reference: http://hyperledger-fabric.readthedocs.io/en/release-1.1/Fabric-FAQ.html#endorsement

The median time differs by more than 70 mins from its system time

Reference: https://blockgeeks.com/guides/hypothetical-attacks-on-cryptocurrencies/