Network & Node Security Flashcards
6 cards from real Blockchain Technology practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 Network & Node Security flashcards as text
Why is node authentication important in blockchain networks?
Answer: It protects against unauthorized nodes
Node authentication ensures that only legitimate participants can join and interact with the blockchain, reducing the risk of malicious attacks.
Which type of attack targets the availability of blockchain networks by overwhelming them?
Answer: DDoS attack
A Distributed Denial of Service (DDoS) attack floods the network with excessive traffic, disrupting normal operations and blocking access.
What is the function of transport layer encryption in blockchain communication?
Answer: Protects data transmission
Transport layer encryption secures data in transit between nodes, protecting it from interception and tampering.
Which technique helps detect malicious activity within blockchain nodes?
Answer: Intrusion Detection System (IDS)
Intrusion Detection Systems (IDS) monitor traffic and behavior patterns to alert administrators of potential attacks or anomalies.
How can blockchain nodes be hardened against physical and network attacks?
Answer: Implementing hardening techniques
Securing node configurations, using firewalls, and disabling unused ports can significantly reduce attack surfaces.
What is the main risk of running a full node on an unsecured network?
Answer: Exposure to cyber attacks
Unsecured nodes are vulnerable to data breaches, tampering, or being used as vectors for broader attacks on the blockchain.