Cisco Certified Support Technician (CCST) NetworkingNetworking FundamentalsMedium
A network architect is designing a network for a new branch office that requires high availability and continuous operation, even if a single network device or link fails. Which design principle should be prioritized to meet these requirements?
- ANetwork Virtualization
- BNetwork Redundancy
- CNetwork Access Control
- DNetwork Segmentation
Show answer & explanationAnswer & explanation
Correct answer: B. Network Redundancy
Network redundancy involves duplicating network devices, links, or paths so that if one component fails, another can take over, ensuring continuous network operation and high availability.
Why the other options are wrong
- A. Network virtualization abstracts network resources, which can aid in flexibility but isn't the primary principle for fault tolerance.
- C. Network access control manages who or what can access network resources, focusing on security, not directly on continuous operation during failures.
- D. Network segmentation divides a network into smaller segments for security and performance, not primarily for high availability.
Network Redundancy
The practice of duplicating network components, paths, or functions to ensure that network services remain available even if one or more components fail.
- Achieved through redundant links, devices, power supplies, etc.
- Increases fault tolerance and high availability.
- Can involve protocols like Spanning Tree Protocol (STP) or Hot Standby Router Protocol (HSRP).
Memory trick: Redundancy is your backup plan for uptime.