Infosys Certified Blockchain Professional
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Real Lex exam-pattern multiple-choice questions for the Infosys Certified Blockchain Professional certification. Each question includes the correct answer. The full question bank is available to Premium members.
- Question 1
The Linux Foundation Hyperledger Project focuses on which three types of openness?
- ✓
Open governance
Correct - B
Open standards
- C
Open source
- D
Open industries
- ✓
- Question 2
" Alice and Bob place a bet on who the winner of the US open tennis tournament would be. They agree on the terms of the bet and lock their funds in a smart contract, which will release all the funds to the winner based on the results of the final game. Verify whether this scenario can be implemented using smart contracts"
- ✓
This scenario cannot be implemented since the smart contract cannot interact with external data
Correct - B
It is illegal to implement smart contracts for placing bets
- C
This scenario can be implemented with a blockchain oracle feeding the necessary external information - game results - to the smart contract
- D
The scenario can be implemented with directly connecting the smart contract with the games results server
- ✓
- Question 3
Which of the following issues can be solved by decentralization in blockchain?
- ✓
Your data is stored and sold to merchants
Correct - B
Your login credential is not safe
- C
Single data storage vulnerable to hack
- D
All of the above
- ✓
- Question 4
You are asked to design a Blockchain application for tracking asset life cycle and history? What will be your main focus in implementing that?
- ✓
Distributed consensus
Correct - B
Avoiding Double spending problem
- C
Provenance
- D
Immutability
- ✓
- Question 5
Who controls and manages the permissionless blockchain network - ✓
Satoshi Nakamoto
Correct - B
Vitalik Buterin
- C
All the perticipants of a network
- D
Distributed consensus
- ✓
- Question 6
What is the main significance of timestamp in a block in a blockchain network?
i. It helps us findout when the block was created
ii. It helps us prevent double spending
iii. We do not actually need timestamping. This is just for visualization purpose.- ✓
i, ii & iii
Correct - B
ii & iii
- C
i & ii
- D
i & iii
- ✓
- Question 7
Where do we host the front end of a DApp?
- ✓
Centralized servers
Correct - B
Distributed servers
- C
Bitcoin network
- D
None of the above
- ✓
- Question 8
Alice is sending a message to Bob. She wants to encrypt it. She uses SHA1 algorithm and sends it to Bob. How can Bob retrieve the message?
- ✓
Bob can use SHA1 algorithm to get back the message
Correct - B
SHA1 is a hashing algorithm. So Bob will not be able to get the original content Alice sent
- C
Bob cannot decrypt the message from Alice since he does not have her private key
- D
Bob can directly view the messege from since it is not encrypted
- ✓
- Question 9
In a blockchain network setup on Hyperledger for ABC Corp, which of the following participants will be rewarded
- ✓
Validator node
Correct - B
Orderer peer
- C
Endorser peer
- D
None of them. There is no concept of rewards in Hyperledger blockchain network
- ✓
- Question 10
"Which of the following statement is correct regarding a Blockchain network
I. Each node can run their own consensus algorithum
II. Each node knows about all the transactions occuring in the network
III. All nodes are connected to a shared distributed database
IV. All nodes are connected to their individual ledger provided by the system"
- ✓
I
Correct - B
II and IV
- C
II, III and IV
- D
II,III and I
- ✓
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