CBSA

CBSA practice questions, page 3 of 9, with answer review and explanations.

Question 11

The key difference between encryption and hashing is that encrypted strings can be reversed back into their original decrypted form if you have the right key?

  1. TRUE
  2. FALSE

Question 12

What is a logic gate in electronics and computer science?

  1. A logic gate usually takes in 2 inputs and gives out 1 output. The inputs and outputs are binary values, meaning they can be both 1 and 0.
  2. A logic gate usually takes in 3 inputs and gives out 2 output. The inputs and outputs are binary values, meaning they can be 1 or 0.
  3. A logic gate usually takes in 2 inputs and gives out 6 output. The inputs and outputs are binary values, meaning they can be both 1 and 0.
  4. A logic gate usually takes in 2 inputs and gives out 1 output. The inputs and outputs are binary values, meaning they can be 1 or 0.

Question 13

Ethereum is considered to be a ______________type of blockchain.

  1. Permissionless
  2. Permission Based
  3. Hybrid
  4. Private

Question 14

Your company working for is now considering the blockchain. They would like to perform a POC with R3 Corda. The CIO was reading about different blockchain consensus algos and would like to understand what type of consensus algos is used with Corda. What is the best answer?

  1. R3 Corda is a pluggable blockchain and allows the enterprise flexibility
  2. R3 Corda is a byzantine fault tolerant blokchain
  3. R3 Corda is a proof of stake based blockchain
  4. R3 Corda is a proof of work based blockchain

Question 15

Secure Hash Algorithm (SHA-256) output is always 256 bits or 32 bytes in length regardless of the length of the input (even if input is millions of bytes). Select best answer.

  1. NSA is spying on us so what's it matters.
  2. Depends on input
  3. False
  4. True