What is the primary security concern unique to distributed systems compared to centralized systems?
Increased attack surface due to multiple processing nodes
Password complexity management
Authentication of users to single sign-on systems
Data encryption at rest requirements
The correct answer is increased attack surface due to multiple processing nodes. Distributed systems by definition spread processing and data across multiple physical or virtual nodes, which inherently increases the attack surface compared to centralized systems. Each node in a distributed system represents a potential entry point for attackers, and securing all communication paths between nodes becomes more complex. This expanded perimeter requires additional security controls and coordination across the system. The other answers represent security concerns that may exist in both distributed and centralized systems, but they are not uniquely characteristic of distributed systems.
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