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400-007 · Question #46
400-007 Question #46: Real Exam Question with Answer & Explanation
The correct answer is B: Added redundancy. Redundancy is the core design principle that improves network resiliency by eliminating single points of failure through duplicate components, links, and alternate paths.
Question
Which design principal improves network resiliency?
Options
- AAdded load-balancing
- BAdded redundancy
- CAdded confidentiality
- DAdded reliability
Explanation
Redundancy is the core design principle that improves network resiliency by eliminating single points of failure through duplicate components, links, and alternate paths.
Common mistakes.
- A. Load balancing distributes traffic across available links to improve throughput and utilization, but it does not by itself provide fault tolerance or ensure continued operation when a component fails entirely.
- C. Confidentiality is a security principle protecting data from unauthorized access and has no relationship to network resiliency or the ability to tolerate component failures.
- D. Reliability is a measurable characteristic describing a component's mean time between failures, not an active design principle that can be added architecturally to improve network-level resiliency.
Concept tested. Network resiliency design principle - redundancy
Reference. https://www.cisco.com/c/en/us/td/docs/solutions/Enterprise/Campus/campover.html
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