The blockchain technology is defined in the year_____

• a) 1991

• b) 1997

• c) 1989

• d) 1982

Blockchain is a shared, _________, and open ledger of transactions.

• a)Demanding

• b) Decentralized

• c) Popular

• d) Secure

Every node on the blockchain network has an __________of the blockchain.

• a) Identical copy

• b) Different copy

• c) Parallel copy

• d) Opposite copy

A decentralized distributed system is one where there is “master” node.

• a) True

• b) False

A centralized system has a centralized control with all administrative rights and are _______.

• a) Easy to design and enforce trust

• b) Administrate and maintain.

• c) Enforce trust, and administrate

• d) All of the above

Application Layer is_______ layer of the block chain.

• a) 2

• b) 4

• c) 5

• d) 3

Linking of block need to be defined on _________

• a) Execution Layer

• b) Application Layer

• c) Propagation Layer

• d) Semantic Layer

What is a genesis block?

• a) The first block of a Blockchain

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

• c ) The first block after each block having

• d) The second transaction of a Blockchain

Who created Bitcoin?

• a) Elon Musk

• b) Warren Buffett

• c) Satoshi Nakamoto

• d) Mark Zuckerberg

Blockchain is a peer-to-peer _____________ distributed ledger technology that makes the records of any digital asset transparent and unchangeable.

• a) Secure

• b) Popular

• c) Demanding

• d) Decentralized