1. Blockchain technology in its current stage cannot set off a massive restructuring of communications and transactions in any industry why?
(i) Scalability issue facing by Blockchain technology
(ii) Cannot securely handle the volume of financial transactions that can occur on centralised payment system like VISA
(iii) High transactional institutions did not feel the necessity of decentralization
(iv) Existing Blockchain system have often sacrificed security
A. i, ii, iii B. i, ii, iv C. ii, iii, iv D. i, iv, iii E. i, ii, iii, iv
2. Which of the following statements represent real vision of QuarkChain
A. Create unique scalability problem that can handle 10000 transactions per second (tps)
B. Create centralised high throughput network that can handle billions of transactions per second
C. Create unique scalability problem that can handle 100,000tps without sacrificing its core feature of security and decentralisation
3. Three main challenges of block chain are
A. Communication, Decentralisation, Scalability
B. Security, Communication, Decentralisation
C. Scalability, Decentralisation and Security
4. To some extent scalability issues can be resolved with multiple Blockchains. The issues concerned with the Multiple Blockchains are
A. Higher transactional demand, lower hash power, low security, short-term solution
B. High Transactional demand, low hash power, low security, long-term solution
C. Low transactional demand, Excess cross chain transactions, low security, short-term solution
D. Lower transactional demand, limit cross chain transactions, short-term solution
5. Which of the following concept QuarkChain adopts to resolve the issues of scalability
A. Multiple Block Chains
B. Sharding
C. Lightening Network
6. Which of the following definitions aptly suits the term “Sharding”
A. Partitioning data in a large database into smaller parts
B. Combining bits of data into large database
C. Independent large database servers
7. How is QuarkChain different from competitors in implementing the concept of sharding
(i) Cross-Shard transactions
(ii) Having multiple accounts to make transactions
(iii) Simple Account management with single private key to make transactions
A. i, ii B. ii, iii C. i, iii D. All of the above
8. QuarkChain network is a ____________ layered Blockchain.
A. One B. Two C. Three D. Four
9. In QuarkChain architecture shards are
A. Minor Blockchains
B. Major Blockchain
C. Root Blockchain
10. Function of Shards in QuarkChain architecture
A. Processes a subset of all transactions
B. Rejects a subset of all transactions
C. Confirms all transactions
11. Function of Root Blockchain in QuarkChain architecture
A. Processes a subset of all transactions
B. Confirms blocks in all shards by excluding the block headers in the root blocks
C. Confirms blocks in all shards by including the block headers in the root blocks
12. What is the interval of Rootchain layer
A. Seconds B. Minutes C. Hours
13. What is the interval of Sharding layer
A. Seconds B. Minutes C. Hours
14. Which of the following statement is true about QuarkChain network
A. Each shard processes a subset of all transactions by depending on another shard
B. As system capacity increases number of shards decreases
C. Each shard processes a subset of all transactions independently
15. Which of the following statements are false
A. Each shard processes a subset of all transactions independently
B. A number of shards increases, shards can process less transactions concurrently
C. As system capacity increases number of shards increases
D. Adding more shards is difficult and slow
16. As shards are mined evenly and thus the system throughput (i.e TPS) _______ as the number of shards ______________
A. Increases, Decreases
B. Increases, Increases
C. Decreases, Increases
D. Decreases, Decreases
17. Rootchain has a significant large portion ____________ of hash power over the whole hash power of the network.
A. Over 10% B. over 25% C. over 50%
19. Which blocks have sufficiently large incentives and difficulty to protect the blocks in all shards
A. Root Block B. Minor Block C. None
19. The root chain runs on __________ algorithm.
A. POW Algorithm B. POS Algorithm C. Both A & B D. None
20. When two forks happen on rootchain the fork with _______ will survive.
A. Shortest length B. Longest length C. Both A& B D. None
Note: QuarkChain Quiz 2 will be released. Answers will be released stay tuned. Please upvote!!!
