CBSA

CBSA practice questions, page 7 of 9, with answer review and explanations.

Question 31

The ____________of the tree is the topmost node and hence this tree is represented upside down. The bottommost nodes are called as ________nodes. Each node is simply a cryptographic hash of a transaction. In the above diagram, Transaction A,B, C,C from the leaves of the tree. Select one.

  1. Root, Hash
  2. Root, Leaf Nodes
  3. Has, Root nodes
  4. Leaf nodes, Root
  5. Leaf Nodes, Root

Question 32

Which of the following blockchain is NOT a permissioned blockchain?

  1. Quantum
  2. Ethereum
  3. R3 Corda
  4. Ripple
  5. Hyperledger

Question 33

What blockchain is considered Blockchain 1.0, the first blockchain?

  1. Bitcoin Cash
  2. Ethereum
  3. Litecoin
  4. Bitcoin
  5. NEO

Question 34

In the EVM every account has a persistent key-value store mapping 256-bit words to 256-bit words called ________

  1. Gas
  2. Space
  3. Storage
  4. Datastore
  5. Database

Question 35

______ is the official Ethereum IDE that allows developers to build and deploy contracts and decentralized applications on top of the Ethereum blockchain.

  1. Mist
  2. Mix
  3. Truffle
  4. Metamask
  5. Embark