What type of hash is used when there is a fixed number of items to be hashed, such as the items in a block header, and we are verifying the composite block integrity?

Blockchain - Quiz(MCQ)

Either

Complex hash

Simple Hash

Tree-structured Hash

Correct Answer : Simple Hash

Explanation : Masking off the bottom m bits to use as an index into a table of size 2 m is a basic hash function. A folding hash code is created by dividing the input into n pieces of m bits each, where 2m is the table size, then combining the sections with a parity-preserving bitwise operation like ADD or XOR.

Recently Updated in Blockchain Questions

What biblical name is given to the first block in blockchain?

Genesis

Ada

Origin

Primal

Correct Answer : Genesis

Explanation : A genesis block (block number 0) is the initial block in a blockchain. This is the sole block in a blockchain that does not include any transactions and does not have a valid reference to a previous block.

Blockchain does not provide?

Security

Immutability

Fast transaction time

Fault tolerance

Correct Answer : Fast transaction time

Explanation : When a blockchain's scalability is high, it means the network can handle a large number of transactions quickly. It enables separate accounts to exchange data swiftly, if not immediately, independent of the network traffic.

The height of the block is the ____ in the chain between it and the genesis block.

Metadata that is

Merkle tree hash

Size of the memory cache

Number of blocks

Correct Answer : Number of blocks

Explanation : The total number of blocks connected since the genesis block is the block height. The number of blocks between any given block and the genesis block determines its height.