Cryptocurrency Wallets and Key Management Questions and Answers

Question 1

What is the primary advantage of using a Hierarchical Deterministic (HD) wallet that conforms to the BIP-32 standard?

Accepted Answer

It allows for the generation of a tree-like structure of key pairs from a single master seed, enhancing privacy and simplifying backup.

Answer

It requires a separate private key backup for every new address generated.

Answer

It stores all private keys on a centralized server for easy access.

Answer

It eliminates the need for private keys, relying solely on biometric authentication.

Question 2

A user signs up for a popular cryptocurrency exchange and deposits funds into their account on the platform. The exchange manages the security of these funds, and the user does not have direct access to the private keys. What type of wallet is this user interacting with?

Accepted Answer

A custodial wallet

Answer

A non-custodial wallet

Answer

A hardware wallet

Answer

A paper wallet

Question 3

Which of the following BEST describes the primary purpose of a 12 or 24-word seed phrase in a non-custodial cryptocurrency wallet?

Accepted Answer

It is a human-readable backup used to recover the wallet's master private key and all associated funds on a new device.

Answer

It serves as a daily password to authorize transactions.

Answer

It is the public address used to receive funds from others.

Answer

It encrypts the wallet's user interface to prevent unauthorized viewing.

Question 4

In the context of a cryptocurrency wallet, what is the specific function of a private key?

Accepted Answer

To create a digital signature that authorizes the spending of funds from a specific address.

Answer

To generate a public address that can be safely shared to receive funds.

Answer

To verify the authenticity of transactions received from others on the blockchain.

Answer

To encrypt the transaction data so that only the receiver can see the amount.

Question 5

An investor holds a significant amount of cryptocurrency as a long-term investment and is primarily concerned with maximizing security against online threats like hacking and malware. Which wallet solution would be most appropriate for this use case?

Accepted Answer

A hardware wallet kept in a secure offline location.

Answer

A mobile wallet on their primary smartphone.

Answer

A web-based wallet provided by a cryptocurrency exchange.

Answer

A desktop software wallet on their everyday computer.

Question 6

Why are "brain wallets," where a user creates a private key from a personally chosen passphrase, generally considered a highly insecure method of key management?

Accepted Answer

Human-generated passphrases have low entropy and are susceptible to being guessed or brute-forced by attackers.

Answer

They are incompatible with the BIP-39 standard for mnemonic phrases.

Answer

They can only generate a single public address, which is bad for privacy.

Answer

The hashing process is too complex for most users to remember.