Quiz
Now it is time to check everything you’ve learned so far!
For each of the questions below, select the most appropriate answers:
1/5
Whoops, two wrong - start again!
That's not right. Careful, one more wrong answer and you'll have to start the quiz again!
The best definition for a public blockchain is:
- A string of transactional data that can be easily modified at any point.
- A string of transactional data that is private and cannot be verified by the public.
- A string of transactional data that is secured via cryptography, it is immutable and can be accessed by anyone at any time.
- A string of transactional data that is controlled by a single entity, making it more trustworthy.
2/5
That's not right. Careful, one more wrong answer and you'll have to start the quiz again!
In blockchain terms, the definition of a node is:
- A computer that is linked to the network where the new blockchain transaction is being validated.
- A new transaction added to the current string of data in the chain.
- A malicious attack to a computer network involving a blockchain.
- It is the term given to the agreement between all the computers part of the network where a blockchain transaction is being validated.
3/5
That's not right. Careful, one more wrong answer and you'll have to start the quiz again!
Blockchains are considered consensus-driven because:
- The transactions recorded in the chain can be publicly published and publicly verified.
- All the computers connected to the network associated with the blockchain need to validate the transaction via algorithms.
- It depends on a single entity controlling the transaction.
- Any subsequent data added to the chain allows the previous block of information in the chain to be altered.
4/5
That's not right. Careful, one more wrong answer and you'll have to start the quiz again!
Select the only statement that is not true about cryptocurrencies:
- Cryptocurrencies are digital currencies that use cryptography to secure and verify transactions.
- Cryptocurrencies values, as traditional currencies values, are stipulated by the government to ensure trust.
- Via blockchain technology users can record ownership and verify transactions what enables cryptocurrencies to store value.
- There is a growing number of businesses accepting cryptocurrencies as means of payment.
5/5
That's not right. Careful, one more wrong answer and you'll have to start the quiz again!
You’ve learnt that blockchain technology is set to revolutionise a growing number of industries such as pharmaceutical, food safety and politics.
Below are characteristics of blockchain technology that make it very appealing to other sectors. Which statement is not correct?
- Blocks in a blockchain can't be modified without certain criteria being met, this makes blockchain technology very secure.
- Blockchain technology makes it very difficult for different stakeholders and other parties involved to access the information related to a transaction.
- Blockchain technology enables all your documents and transaction records to be stored securely with measurably less work and less cost.
- Blockchain technology can allow consumers to get a full understanding of the journey of a product.
