01_BLOCK1

In the simplest sense, we can say a block is a combination of

• Ledger and secret code
• Accounting book and cryptography
• Ledger and cryptography
• All of the above

In the key points in the definition of blockchain are

• Digital ledger
• Distributed
• Decentralized
• All of the above.

In the context of block chain, DLT stands for

• Distributed Ledger Transaction
• Distributed Ledger Ticker
• Distributed Ledger Technology
• Distributed Ledge Technique

The immutable cryptographic signature is called

• Smart Contract
• Chain in Blockchain
• DLT
• Hash

Blockchain are programmable

• True
• False

In a block of a blockchain we cannot find when it was created.

• Absolute correct.
• Partial correct , if the user put it in the code it is recorded.
• Impossible, all blocks have the timestamp
• None of the above.

Stuart Haber and Scott Stornetta, wrote a paper which forms basis for the block chain technology. This paper was titled –

• How to Timestamp a digital document
• How to create a block chain
• How to use combine ledgers and cryptography
• None of them.

Satoshi Nakamoto is attributed with the creation of the bitcoin blockchain

• True
• false

The key components of a block in a block chain are

• Data, Hash, Previous Hash
• Timestamp, Hash, Data
• Digital Fingerprint, Hash , Previous Hash
• Transaction details , Hash

Blocks are cryptographically linked together by

• Data
• Hash
• Previous Hash
• All of the above