350-401 Question 10
Single answerAn enterprise is designing a high-level network architecture for a new campus environment. They need a scalable design that separates the core functions of routing and switching while providing simplified management and fault isolation. Which high-level enterprise network design model should they choose?
- A
2-tier architecture
- B
3-tier architecture
- C
Fabric-based architecture
- D
Cloud-based architecture
Show answer and explanation
Correct answer: B
Explanation
The 3-tier architecture is the best choice for large enterprise campus environments due to its division of core, distribution, and access layers. This separation facilitates better fault isolation, scalability, and simplified management, which are critical for enterprise-grade networks.
- A. Incorrect.
2-tier architecture is commonly used in smaller or medium-sized networks where scalability and separation of core functions are less critical. It merges distribution and core layers, which is not ideal for large environments requiring fault isolation and scalability.
- B. Correct.
3-tier architecture separates the core, distribution, and access layers, making it highly scalable and ideal for large enterprise environments. It enables better fault isolation and simplifies management in complex networks.
- C. Incorrect.
Fabric-based architecture is used for modern designs focusing on automation, virtualization, and programmability. While it offers advantages, it is not explicitly mentioned as the best fit for traditional campus environments in this scenario.
- D. Incorrect.
Cloud-based architecture is a design model that integrates private, public, or hybrid cloud resources. It is not the best solution for on-premises campus environments requiring traditional routing and switching separation.