File Info
| Exam | BTA Certified Blockchain Solution Architect |
| Number | CBSA |
| File Name | Blockchain.CBSA.Pass4Sure.2019-05-03.85q.tqb |
| Size | 677 KB |
| Posted | May 03, 2019 |
| Download | Blockchain.CBSA.Pass4Sure.2019-05-03.85q.tqb |
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Demo Questions
Question 1
How many satoshis are in 1 bitcoin and how many wei in an Ether? (Select two.)
- 1,000,000,000,000,000,000
- 1,000,000,000,000,000
- 1,000,000,000
- 10,000
- 1,000,000,000,000
Correct answer: AB
Explanation:
Reference: http://www.btcsatoshi.com/http://ethdocs.org/en/latest/ether.html Reference: http://www.btcsatoshi.com/
http://ethdocs.org/en/latest/ether.html
Question 2
In the Proof of Stake(POS) algorithm the miners are really known as ___________?
- Notary
- Oracle
- Forgers
- 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
Question 3
A Byzantine failure is the loss of a system service due to a Byzantine fault in systems that requires________.
What is required?
- Consensus
- Crypthography
- Bandwidth
- Availability
Correct answer: A
Explanation:
A Byzantine failure is the loss of a system service due to a Byzantine fault in systems that require consensus. Reference: https://en.wikipedia.org/wiki/Byzantine_fault_tolerance A Byzantine failure is the loss of a system service due to a Byzantine fault in systems that require consensus.
Reference: https://en.wikipedia.org/wiki/Byzantine_fault_tolerance
