BTA Certified Blockchain Developer - Ethereum Questions and Answers
Question 13
It’s possible to access the blockchain via an Ethereum Node:
Options:
A.
only via JavaScript because there is the proprietary Web3.js library.
B.
by any programming language, as long as it adheres to the JSON-RPC standard.
Answer:
B
Question 14
PoS:
Options:
A.
would be better, because it can reduce the amount of energy needed for mining.
B.
would be worse, because it would increase the amount of energy needed for mining.
Answer:
A
Question 15
DApps are:
Options:
A.
great, because they cut the middle man, run on a trusted platform, apply logic to the blockchain where already economic assets are running and thus allow peer to peer trade.
B.
an amazing way to create new applications. Those applications run entirely separated from other applications on the platform and allow for logical interactions. They can't access any funds to add an additional layer of trust.
C.
a new way of applying logical operations for banks and big financial institutions. This way they can reduce the staff while operating at increased security.
