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Feb 2025

How to answer this Situational interview question about Disaster Recovery for Senior-Level Stability Architect?

How do you design and implement a disaster recovery plan for a blockchain-based system?

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Stability Architect

Situational

Asked at

Bybit

Difficulty :

Hard

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Explanation

This question evaluates your ability to prepare for and recover from system failures in a blockchain environment. Recruiters are looking for candidates who can design robust disaster recovery plans that account for data integrity, consensus re-establishment, and business continuity. A strong answer will include specific strategies like multi-region backups, fault-tolerant architecture, and examples of successful recovery. Avoid neglecting blockchain-specific challenges such as re-syncing nodes or corrupted ledgers.

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Answer Example

I design disaster recovery plans by implementing multi-region backups and ensuring nodes can resync from verified snapshots. I also test recovery procedures through regular failover drills and maintain a standby environment for rapid failback. For example, during a network outage caused by a DDoS attack, I activated a backup node cluster in a different region and restored the ledger from secure snapshots within 30 minutes, minimizing downtime. This approach ensures data integrity and consensus re-establishment during disasters.

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