IBM Blockchain EXAM
QUESTIONS AND ALL CORRECT
ANSWERS 100% SOLVED AND
GUARANTEED SUCCESS
Which of the following blockchain use cases is an example of an Asset Exchange
pattern? - CORRECT ANSWER-b. Sharing of assets (voting, dividend
notification)
[true/false] You can take a hash function and run it multiple times, so take the
output of running the hash function and use it as the input to the same hash
function. This produces the same results each time. - CORRECT ANSWER-.
False
Staying with ROT13 as our hash function h, what is the output of running the
following hash chain? h("block" + h("chain")) - CORRECT ANSWER-b.
oybpxchain
In a typical blockchain implementation, which of the following is an optional part
of a block that contains at least one transaction? - CORRECT ANSWER-c.
Transaction data
, Honest peer 1 thinks the world state is "abc". Honest peer 2 thinks the world state
is "abc". Honest peer 3 thinks the world state is "def". Malicious peer 4 wants
everyone to believe that the world state is "xyz". What is the optimal result of
running a consensus algorithm against this network? - CORRECT ANSWER-a.
Peers 1, 2 and 3 think the world state is "abc". Peer 4 is ignored.
What might be considered data for the world state? - CORRECT ANSWER-a.
Matt's current balance
The ROT13 function takes an input string and converts any letters in it to those
that are 13 ahead of it in the alphabet, looping round as appropriate; so the input
"blockchain" becomes "oybpxpunva". ROT13 is not really an appropriate hash
function, but which of these might be considered an advantage of using it as a one-
way hash function? - CORRECT ANSWER-a. It is guaranteed to produce the
same output for the same input.
Looking at the cryptocurrency market as a whole, which is the biggest
differentiator between cryptocurrency instances? - CORRECT ANSWER-a. The
commodity being stored
When considering token based blockchains vs. policy based blockchains, which of
the following is true? - CORRECT ANSWER-. Policy-based blockchains are
permissioned according to identity
[true/false] Ethereum is a distributed computing platform; it allows smart
contracts to be run globally. Crucially this gives us the concept of "guarantee of
© 2026 Copyright. All Rights Reserved. This document is
protected by copyright law
QUESTIONS AND ALL CORRECT
ANSWERS 100% SOLVED AND
GUARANTEED SUCCESS
Which of the following blockchain use cases is an example of an Asset Exchange
pattern? - CORRECT ANSWER-b. Sharing of assets (voting, dividend
notification)
[true/false] You can take a hash function and run it multiple times, so take the
output of running the hash function and use it as the input to the same hash
function. This produces the same results each time. - CORRECT ANSWER-.
False
Staying with ROT13 as our hash function h, what is the output of running the
following hash chain? h("block" + h("chain")) - CORRECT ANSWER-b.
oybpxchain
In a typical blockchain implementation, which of the following is an optional part
of a block that contains at least one transaction? - CORRECT ANSWER-c.
Transaction data
, Honest peer 1 thinks the world state is "abc". Honest peer 2 thinks the world state
is "abc". Honest peer 3 thinks the world state is "def". Malicious peer 4 wants
everyone to believe that the world state is "xyz". What is the optimal result of
running a consensus algorithm against this network? - CORRECT ANSWER-a.
Peers 1, 2 and 3 think the world state is "abc". Peer 4 is ignored.
What might be considered data for the world state? - CORRECT ANSWER-a.
Matt's current balance
The ROT13 function takes an input string and converts any letters in it to those
that are 13 ahead of it in the alphabet, looping round as appropriate; so the input
"blockchain" becomes "oybpxpunva". ROT13 is not really an appropriate hash
function, but which of these might be considered an advantage of using it as a one-
way hash function? - CORRECT ANSWER-a. It is guaranteed to produce the
same output for the same input.
Looking at the cryptocurrency market as a whole, which is the biggest
differentiator between cryptocurrency instances? - CORRECT ANSWER-a. The
commodity being stored
When considering token based blockchains vs. policy based blockchains, which of
the following is true? - CORRECT ANSWER-. Policy-based blockchains are
permissioned according to identity
[true/false] Ethereum is a distributed computing platform; it allows smart
contracts to be run globally. Crucially this gives us the concept of "guarantee of
© 2026 Copyright. All Rights Reserved. This document is
protected by copyright law
