Cisco Cyber Security Practice Exam

Having only one router in a data center signifies a single point of failure. This means that if that router were to fail or encounter a problem, the entire network could go down, leading to a complete loss of connectivity and services. In a robust network design, redundancy is crucial. By having multiple routers, the infrastructure can maintain availability even if one device fails. This setup ensures that traffic can be rerouted through alternate paths, maintaining network operations and minimizing downtime.

Addressing the other options, over-clustering refers to having too many devices in one area, which does not apply to the single router scenario. Performance bottleneck relates to whether the device can handle the amount of traffic it receives, but with only one router, the primary concern becomes reliability. Inadequate bandwidth deals with the amount of data that can be transmitted at once, which isn't specifically indicated by having one router but could instead suggest capacity issues with the router itself.