Download Blockchain.CBSA.CertKiller.2019-10-22.137q.tqb

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File Info

Exam BTA Certified Blockchain Solution Architect
Number CBSA
File Name Blockchain.CBSA.CertKiller.2019-10-22.137q.tqb
Size 747 KB
Posted Oct 22, 2019
Download Blockchain.CBSA.CertKiller.2019-10-22.137q.tqb

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Demo Questions

Question 1

SHA-1 is the most commonly used SHA algorithm, and produces a ______-byte hash value(size).


  1. 256
  2. 128
  3. 32
  4. 20
Correct answer: D
Explanation:
SHA-1 is the most commonly used SHA algorithm, and produces a 20-byte hash value. Reference: https://www.securityinnovationeurope.com/blog/page/whats-the-difference-between-hashing-and-encrypting
SHA-1 is the most commonly used SHA algorithm, and produces a 20-byte hash value. 
Reference: https://www.securityinnovationeurope.com/blog/page/whats-the-difference-between-hashing-and-encrypting



Question 2

How many satoshis are in 1 bitcoin and how many wei in an Ether? (Select two.)


  1. 1,000,000,000,000,000,000
  2. 1,000,000,000,000,000
  3. 1,000,000,000
  4. 10,000
  5. 1,000,000,000,000
Correct answer: AB
Explanation:
Reference: http://www.btcsatoshi.com/
Reference: http://www.btcsatoshi.com/



Question 3

In the Proof of Stake(POS) algorithm the miners are really known as ___________?


  1. Notary
  2. Oracle
  3. Forgers
  4. Minters
Correct answer: C
Explanation:
Proof of Stake has the same goal as proof of work—to validate transactions and achieve consensus in the chain—and it uses an algorithm but with a different process. With proof of stake, the creator of a new block “is chosen in a deterministic way, depending on its wealth, also defined as a stake.” Since in a proof of stake system, there is no block reward, but the miners, known as forgers, get the transaction fees. Proponents of this shift, including Ethereum co-founder Buterin, like proof of stake for the energy and cost savings realized to get to a distributed form of consensus.  Reference: http://www.hl.co.uk/news/2018/2/16/a-brief-history-of-blockchain-technology-everyone-should-read
Proof of Stake has the same goal as proof of work—to validate transactions and achieve consensus in the chain—and it uses an algorithm but with a different process. With proof of stake, the creator of a new block “is chosen in a deterministic way, depending on its wealth, also defined as a stake.” Since in a proof of stake system, there is no block reward, but the miners, known as forgers, get the transaction fees. Proponents of this shift, including Ethereum co-founder Buterin, like proof of stake for the energy and cost savings realized to get to a distributed form of consensus.  
Reference: http://www.hl.co.uk/news/2018/2/16/a-brief-history-of-blockchain-technology-everyone-should-read









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