Ethereum Developer Test 6

Question 1

What is TRUE about Go-Ethereum and Ganache

Accepted Answer

Ganache provides an in-memory blockchain simulation, whereas Go-Ethereum provides a genuine blockchain node that allows you to build your own local private network, connect to test networks, and access the main network.

Answer

With Ganache, you can connect to the Test-Networks Rinkeby and Ropsten using a genuine blockchain node.

Answer

With Ganache, you can connect to the Test-Networks Rinkeby and Ropsten using a genuine blockchain node.

Answer

Both are identical and are merely being expressed in different languages.

Question 2

Which eth2 client does Chainsafe support?

Accepted Answer

Lodestar

Answer

Trinity

Answer

Lighthouse

Answer

Teku

Question 3

Which is TRUE about Ethereum Nodes?

Accepted Answer

Must implement a JSON-RPC for communication with clients and the Ethereum Protocol.

Answer

Must implement the Ethereum protocol, and only the exclusive Ethereum Libraries like Web3.js can be used for external access.

Answer

To connect with websites, you must use Web3.js.

Question 4

4) Which is TRUE about Block Timestamp?

Accepted Answer

The timestamp is always independent of the time zone, but it can be slightly modified by a miner.

Answer

The timestamp is widely regarded as secure to use for randomness on the blockchain because it cannot be tampered with by a miner.

Answer

Because the timestamp is based on the miner's time zone, the difficulty is constantly changing to account for network latency.

Question 5

What is a Private Network?

Accepted Answer

A network that only operates in a private area, and prohibits public access

Answer

A virtual machine that may be launched in the Azure Cloud that is an exact replica of the Rinkeby Test-Network.

Answer

The Ethereum Main Net has a side channel that uses less gas to operate smart contracts.

Question 6

What exactly are Ethereum Nodes?

Accepted Answer

Software applications that use the Ethereum Protocol to communicate with one another and JSON-RPC interfaces to communicate with external systems.

Answer

A decentralized framework for deploying and managing smart contracts

Answer

A Java-Script library for assembling and executing Solidity Code

Question 7

Which is correct about Blockchain node?

Accepted Answer

Answer

May at any time turn into a mining node

Answer

Can become a mining node if the capability is included in the implementation.

Answer

Can never turn into a mining node.

Question 8

Which is TRUE about Block Diffficulty?

Accepted Answer

The Block Difficulty rises when there are less than 10 seconds between mined blocks and falls when there are more than 20 seconds between mined blocks.

Answer

The Block Difficulty rises when there are fewer than 20 seconds between mined blocks and falls when there are more than 60 seconds between them.

Answer

The Ethereum Committee sets the Block Difficulty every two weeks to match the typical volume of transactions, and the network itself is unable to change it.

Question 9

The ETH2 mascot was given the name of :

Accepted Answer

Leslie Lamport

Answer

Leslee Lampart

Answer

Leslie Lemport

Answer

Leyslie Lampport

Question 10

After a new block has been mined,

Accepted Answer

The block includes a list of the transactions and uncles. The balance of the miners is increased by the amount of gas spent during such transactions. Additionally, the miner receives the block reward. The network then achieves consensus by repeating the same transactions on all participating nodes.

Answer

That block includes a list of transactions. While the block reward is automatically distributed across the mining pool to ensure a fair distribution, the gas utilized during the execution is tied to the contracts that are actually being executed. By using a unique kind of hash code, consensus is achieved.

Answer

None of the above