ISC2 Systems Security Certified Practitioner (SSCP) Practice Question
An e-commerce company runs its order processing database on a single high-end server in an on-premises data center. A recent disk controller failure took the site offline for four hours, violating the company's zero-downtime availability objective. Budget allows acquisition of one additional physical server but minimal software changes. Which control will most effectively meet the availability requirement?
Schedule differential database backups to an off-site tape library every six hours.
Implement strict role-based access control to limit database administrator privileges.
Deploy a two-node database cluster with synchronous replication and automatic failover between the primary and the new server.
Install a host-based intrusion detection system on the existing database server.
High availability demands that if one component fails, another can assume the workload with little or no interruption. Creating a two-node database cluster that uses synchronous replication and automatic failover provides immediate redundancy at both the hardware and software levels, allowing client connections to be redirected to the surviving node without noticeable downtime. Differential tape backups improve recoverability but still require restore operations and thus do not meet a zero-downtime goal. A host-based IDS and stricter role-based access control enhance security and integrity but do not materially improve real-time access to the database service when hardware fails.
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ISC2 Systems Security Certified Practitioner (SSCP)
Security Concepts and Practices
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