CBSA Exam Dumps : BTA Certified Blockchain Solution Architect

The merkle tree does not contain a list of all the transactions, rather a hash (digital fingerprint) of all transactions as a tree structure.

Remember, that the block creation time is set to 10 minutes and this can never change. So after a fixed time of approximately 2 weeks or exactly 2016 blocks the difficulty is re-adjusted. Increase in difficulty means target decreases.

The main disadvantages are huge expenditures, “uselessness” of computations and 51 percent attack.