Basic blockchain security

Blockchain technology produces a structure of data with inherent security qualities. It's

based on principles of cryptography, decentralization and consensus, which ensure trust

in transactions. In most blockchains or distributed ledger technologies $($DLT$),$ the data is

structured into blocks and each block contains a transaction or bundle of transactions.

Each new block connects to all the blocks before it in a cryptographic chain in such a way

that it's nearly impossible $$ tamper with. All transactions within the blocks are validated

and agreed upon by a consensus mechanism, ensuring that each transaction is true and

correct.

Blockchain technology enables decentralization through the participation of members

across a distributed network. There is no single point of failure and a single user cannot

change the record of transactions. However, blockchain technologies differ in some

critical security aspects.

cryptography, consensus, and distribution as some of the highlighted principles of blockchain

techology in the excerpt $(20$ Marks$).$

Question $2$: The first sentence in the last paragraph reads as follows, "Blockchain technology

enables decentralization through the participation of members across a distributed network".Question $1$: In very simple terms, explain how security is achieved via decentralisation,

cryptography, consensus, and distribution as some of the highlighted principles of blockchain

technology in the excerpt