A node operator must choose between running a node on a cloud VM with automatic patching or on a dedicated on-premises server with manual patching. The node holds a significant amount of staked tokens. Which consideration is most important for security?

Prefer the cloud VM because it has better DDoS protection.

Ensure the node's operating system and blockchain software are patched promptly regardless of hosting location.

Choose the cloud VM because automatic patching is always more secure.

Choose the on-premises server because it is physically isolated from the internet.

A blockchain node operator wants to minimize the attack surface of a node that only needs to submit transactions and not participate in consensus. Which configuration is most appropriate?

Run a mining node with high hash power.

Run a light client that connects to trusted full nodes.

Run a full node with RPC enabled on all interfaces.

Run a full node with all ports open to the internet.

A company operates a blockchain node that holds a private key used for signing transactions. The node is located in a shared data center. Which practice is most important to protect the private key from compromise?

Disable all network access to the node to prevent remote attacks.

Store the private key in a hardware security module (HSM) and restrict access to authorized personnel.

Share the private key among multiple team members for redundancy.

Encrypt the private key with a password and store it on the node's local disk.

Which monitoring practice is essential for detecting anomalies in a blockchain network?

Reviewing social media mentions

Tracking the number of active nodes and their geographic distribution

Monitoring the price of the native cryptocurrency

Checking the weather in the data center

EC-CouncilBlockchain Developer Certification

Domain 7Objective 2

Network Layer, Consensus, Smart Contract, and Node Security Best Practices BDC Practice Questions (Page 4)

Part of the Blockchain Security and DeFi Development domain, which makes up ~11% of our current practice bank.

45questions here

9free pages

6concepts

Questions 16–20

16expert · hard
A node operator must choose between running a node on a cloud VM with automatic patching or on a dedicated on-premises server with manual patching. The node holds a significant amount of staked tokens. Which consideration is most important for security?
Select an answer first
17application · medium
A blockchain node operator wants to minimize the attack surface of a node that only needs to submit transactions and not participate in consensus. Which configuration is most appropriate?
Select an answer first
18application · medium
A company operates a blockchain node that holds a private key used for signing transactions. The node is located in a shared data center. Which practice is most important to protect the private key from compromise?
Select an answer first
19foundation · easy
Which monitoring practice is essential for detecting anomalies in a blockchain network?
Select an answer first
20foundation · easy
Which security property is a primary advantage of BFT-based consensus protocols compared to proof-of-work?
Select an answer first

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