Blockchain Developer Test 1 - Practice Test Geeks

Describe the hash function.

Returns a fixed-length string of numbers and letters after accepting input of arbitrary length.

Liquid

Bitcoin

Cryptocurrency

Correct! Wrong!

How does Proof of Stake work?

A secret phrase required to access an exchange

How to create private keys

A protocol for transaction and block verification

A certificate required to utilize the Blockchain

Correct! Wrong!

Where can cryptocurrency be purchased?

A Bitcoin ATM

A private transaction

An exchange

All of the above

Correct! Wrong!

Describe cold storage.

A secret key with internet access

A private key that isn't linked to the internet

An office wallet

Where you can hang your coat

Correct! Wrong!

What exactly is a blockchain?

A kind of digital currency

An exchange

An integrated ledger

A peer-to-peer network distributed ledger

Correct! Wrong!

Describe the private key.

A public key distributed

A key that cannot be distributed to the general public

A key that unlocked a hidden door

A key you have on a key chain

Correct! Wrong!

Describe a node.

The Blockchain

A pc connected to a blockchain

An exchange

A kind of digital currency

Correct! Wrong!

Who invented Bitcoin?

Samsung

John Mcafee

China

Satoshi Nakamoto

Correct! Wrong!

Describe a DAPP.

A decentralized application

A side dish

An example of a blockchain

A kind of digital currency

Correct! Wrong!

What is a genesis block?

The first block of a blockchain

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

The first block after each block halving

The 2nd transaction of a blockchain

Correct! Wrong!

Uses of asymmetric encryption

Only private keys

Private and public keys

Proof of stake

Only public keys

Correct! Wrong!