Free CBSA Exam Braindumps (page: 7)

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An ____________is a well-known service that signs transactions if they state a fact and that fact is considered to be true. They may optionally also provide the facts.

  1. notary
  2. oracle
  3. node
  4. endpoint

Answer(s): B

Explanation:

An oracle is a well known service that signs transactions if they state a fact and that fact is considered to be true. They may also optionally provide the facts r 3 Corda Technical Whitepaper.



Select the two kinds of accounts in Ethereum which share the same address space. (Select two.)

  1. Gas Account
  2. Contract Accounts
  3. External Accounts
  4. Internal Accounts
  5. dApp Accounts

Answer(s): B,C



The most popular Ethereum development framework is currently Truffle. What are three features of Truffle? (Select three.)

  1. Scriptable deployment & migrations framework.
  2. Automated contract testing with Mocha and Chai.
  3. Takes Dapp transactions via Ws-rpc, json-rpc, ipc-rpc.
  4. Built-in smart contract compilation, linking, deployment and binary management.
  5. Automated contract testing with Mocha only

Answer(s): A,B,D

Explanation:

Truffle is a development environment, testing framework and asset pipeline for Ethereum, aiming to make life as an Ethereum developer easier.


Reference:

https://github.com/trufflesuite/truffle



You are considering writing smart contracts and there are a few different languages you can consider. (Select two.)

  1. Truffle
  2. Serpent
  3. Solidity
  4. Embark

Answer(s): B,C

Explanation:

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



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