R3 Corda does not organize time into blocks. What does Corda actually perform and use?
Options:
A.
Ripple is implemented as the blockchain and XRP for cryptocurrency.
B.
Notary services and timesmapping
C.
R3 Corda is a blockchain and does use blocks
D.
Notary services and timestamping
Answer:
D
Explanation:
Explanation:
Review Technical Whitepaper Corda network has one or more notary services which provide transaction ordering and timestamping services, thus abstracting the role miners play in other systems into a pluggable component.
Question 3
In regards to understanding the Ethereum Virtual Machine what statement is true?
Options:
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
Explanation:
Explanation:
The EVM is basically a sandboxed virtual machine running on every single node. It is Turing complete and a transaction-based state machine. The nodes reach consensus by executing all transactions. Only the miner node gets the block reward, all other nodes are just checking if the miner was “honest”.