Exam

Question 1

What is true about a block indexer?

Indexers fetches the raw data from the node, then processes it and stores it in a database in an optimized way.

It enables cryptocurrency transactions.

It provides fast access to the blockchain data.

It allows the writing and deployment of smart contracts.

Indexers exist only for the Tezos blockchain.

Question 2

What is a block indexer made of?

An API Layer

A Block Node

A Database

An ETL

Question 3

Which of the following block explorers is designed for the Tezos Blockchain?

Etherscan

TzKT

TzStats

BlockChair

Arronax

Ethplorer

TzKT

Question 4

What does a block explorer such as TzStats allow you to do?

Get an overview of the main activity on the Tezos network, e.g. staking activity, gas price, Tez offer, transaction volume, etc.

Get general information about a specific block number.

Delete a block.

Get an overview of the Tezos baker landscape.

Make API calls from a DApp to get storage data, e.g. the values in a _big map_.

Modify a transaction in which you were mistaken.

Find a smart contract by its address and view its calls, entrypoints, storage etc

Deploy your smart contract.

Get an overview of the current market activity, e.g. list of exchanges, 1 day's volume, overall market capitalization, etc.

Question 5

What is true about private indexers?

They can only be run on private networks.

They need a private explorer to access the data.

They cannot be customized.

They can be run on public networks and provide an API access to its data.