In Ethereum how is the block dijculty determined in Ethereum?
A. The Block Dijculty increases when the time between mined blocks is below 10 seconds, while it decreases when the time is above 20
seconds.
B. The Block Dijculty is determined by the Ethereum Committee every fortnight to reect the a...
in ethereum how is the block dijculty determined in ethereum
in regards to understanding the ethereum virtual machine what statement is true
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In Ethereum how is the block dijculty determined in Ethereum?
A. The Block Dijculty increases when the time between mined blocks is below 10
seconds, while it decreases when the time is above 20
seconds.
B. The Block Dijculty is determined by the Ethereum Committee every fortnight to re\ect
the average amount of transaction and it cannot be
in\uenced by the network itself.
C. The Block Dijculty increases when the time between mined blocks is below 20
seconds, while it decreases when the tie is above 60
seconds. - Answer A. The Block Dijculty increases when the time between mined blocks
is below 10 seconds, while it decreases when the time is above 20
seconds.
In regards to understanding the Ethereum Virtual Machine what statement is true?
A. The EVM is extremely powerful, non-turing complete and perfect for doing
computational intensive thins, because of the direct access to
the graphics card.
B. The EVM is extremely powerful, turing complete and perfect for doing computational
intensive things, because of the direct access to the
graphics card.
C. While the EVM is Sandboxed, it isn't as powerful as the Bitcoin network, because it's
not Turing Complete
D. The EVM can't access hardware layers or anything outside a blockchain node
because it's sandboxed. - Answer D. The EVM can't access hardware layers or
anything outside a blockchain node because it's sandboxed.
Blockchain provenance is de+ned as _______________?
A. Information sent to the blockchain and written to the blockchain.
B. Recording the history of data, from its last block to various stages of the data lifecycle
C. Recording the history of data, from its inception to various stages of the data
lifecycle.
D. Once a transaction has been written and committed to the ledger it cannot be
changed. - Answer C. Recording the history of data, from its inception to various stages
of the data lifecycle.
Smart Contracts provide all the following bene+ts EXCEPT?
A. Legally Enforcable
B. Autonomy
C. Cast Savings
D. Ejciency
E. Backup - Answer A. Legally Enforcable
There are two types of tokens in blockchain solutions. (Select two.)
,A. Legal
B. Utility
C. Equity
D. Financial - Answer B. Utility
C. Equity
You are currently considering blockchain solutions for your organization. You read an
article about "blockless" blockchains.
What are the two bene+ts that could be gained over a traditional blockchain solution?
(Select two.)
A. Faster Block writes
B. Greater Transaction Security
C. Faster Performance
D. Greater transaction Capacity - Answer A. Faster Block writes
B. Greater Transaction Security
In blockchains there is the concept of "Group Consensus" and how many members
must agree.
A. 52%
B. 74%
C. 75%
D. 51%
E. 100% - Answer 51%
What consensus algo uses a method of sending coins to an address where they cannot
be retrieved?
A. Proof of Stake
B. Proof of Activity
C. Proof of Burn
D. Proof of Sending - Answer Proof of Stake
Bitcoin implemented Byzantine Fault Tolerance through a system named:
A. Authenticated Encryption
B. Proof of Work
C. PBKDF2
D. None of the above - Answer Proof of Work
Hyperledger is an enterprise focused blockchain project. This project was released by a
consortium under the umbrella of the Linux Foundation's
Hyperledger
Project.
What year did Hyperledger go live?
A. 2013
B. 2012
C. 2015
D. 2009 - Answer 2015
, What is the difference in using Go-Ethereum over Ganache?
A. Can automate builds with Go Ethereum but you can't with Ganache
B. Go Ethereum is written in Java whereas Ganache is written in Golang
C. Go Ethereum is real blockchain whereas Ganache is a blockchain simulation
D. Ganache is a real blockchain whereas Go Ethereum is a blockchain simulation -
Answer Go Ethereum is written in Java whereas Ganache is written in Golang
In what year did a whitepaper that was published by "Satoshi Nakamoto" outlined a
solution to the Byzantine Generals problem?
A. 2006
B. 2009
C. 2008
D. 2010 - Answer 2008
What is a development language which lets developers solve any class of problem in
existence given in+nite time and resources?
A. Turing Complete
B. Turing Incomplete
C. Solidity
D. Mist
E. JVM
F. EVM - Answer Turing Complete
When you considering developing and running dAPPS in Ethereum its important to
understand that Gas and Ether are decoupled for price stability.
Is this True or
False?
A. True
B. False - Answer True
What type of "bug" generally occurs when something isn't right according to business
requirements?
A. Business logic
B. Business Requirements
C. Integration
D. Accessibility
E. Security - Answer Business logic
Ideal bug reports link the bug being reported to a _______________
A. Business Value
B. Business Process
C. Regression Issue
D. Business Target
E. Progression Issue - Answer Business Value
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