Blockchain Developer Test 1

Question 1

What exactly is a blockchain?

Accepted Answer

A peer-to-peer network distributed ledger

Answer

A kind of digital currency

Answer

An exchange

Answer

An integrated ledger

Question 2

Describe a node.

Accepted Answer

A pc connected to a blockchain

Answer

The Blockchain

Answer

An exchange

Answer

A kind of digital currency

Question 3

Where can cryptocurrency be purchased?

Accepted Answer

All of the above

Answer

A Bitcoin ATM

Answer

A private transaction

Answer

An exchange

Question 4

Describe a DAPP.

Accepted Answer

A decentralized application

Answer

A side dish

Answer

An example of a blockchain

Answer

A kind of digital currency

Question 5

Describe cold storage.

Accepted Answer

A private key that isn't linked to the internet

Answer

A secret key with internet access

Answer

An office wallet

Answer

Where you can hang your coat

Question 6

What is a genesis block?

Accepted Answer

The first block of a blockchain

Answer

A famous block that hardcoded a hash of the Book of Genesis onto the blockchain

Answer

The first block after each block halving

Answer

The 2nd transaction of a blockchain

Question 7

Describe the private key.

Accepted Answer

A key that cannot be distributed to the general public

Answer

A public key distributed

Answer

A key that unlocked a hidden door

Answer

A key you have on a key chain

Question 8

Who invented Bitcoin?

Accepted Answer

Satoshi Nakamoto

Answer

Samsung

Answer

John Mcafee

Answer

China

Question 9

Uses of asymmetric encryption

Accepted Answer

Private and public keys

Answer

Only private keys

Answer

Proof of stake

Answer

Only public keys

Question 10

How does Proof of Stake work?

Accepted Answer

A protocol for transaction and block verification

Answer

A secret phrase required to access an exchange

Answer

How to create private keys

Answer

A certificate required to utilize the Blockchain