Question 1

What presents the greatest risk of blockchain to organizations?

Group of answer choices

Cost

Requires immense computing power

Lack of transparancy

Lack of immutability

If no transactions can be deleted or edited in a distributed ledger, how are transactions updated?

Group of answer choices

By processing the current value based on reviewing the entire history of all related transactions.

The most current transaction will always be the correct one.

When a transaction is deleted or edited, an original copy is created and permanently stored in the ledger.

What is the purpose of a nonce?

Group of answer choices

Make the mathematics more complex to solve.

Change the output hash to equal the input string.

Change the input string so that different hashing target candidates are produced.

Slow down the encryption process so transactions are only processed every 10 minutes.

How is digital identity authenticated?

Group of answer choices

Change the input string so that different hashing target candidates are produced.

each person having a unique public and private key

validating a public key against a secured database of private keys

unencrypting the transaction with the private key and revealing the person's name

What is the biggest near-term benefit of blockchain in the financial sector?

Group of answer choices

efficiency

Reduced fraud

increased profit

Better wide-scale integration across disparate systems