350-401 Question 3
Single answerA company is redesigning its enterprise network to ensure better scalability and simplified management. Which architecture design approach would best suit this requirement?
- A
Three-tier architecture with core, distribution, and access layers.
- B
Flat network design with all devices in a single broadcast domain.
- C
Single-layer architecture using only access switches.
- D
Hub-and-spoke topology without redundant links.
Show answer and explanation
Correct answer: A
Explanation
The three-tier architecture is the most suitable design for enterprise networks as it ensures better scalability, fault isolation, and simplified management. The core layer provides fast transport, the distribution layer handles routing and policy enforcement, and the access layer connects end devices. This hierarchical design aligns with industry best practices and supports the needs of modern enterprises.
- A. Correct.
The three-tier architecture provides scalability, segregation of roles, and simplified management by dividing the network into core, distribution, and access layers. This is the industry standard for enterprise networks.
- B. Incorrect.
A flat network design causes scalability issues due to large broadcast domains and difficulty in isolating faults or managing traffic. It is not suitable for modern enterprise environments.
- C. Incorrect.
A single-layer architecture lacks scalability and redundancy, making it unsuitable for enterprise networks that require high availability and performance.
- D. Incorrect.
Hub-and-spoke topology without redundant links would result in a lack of fault tolerance and scalability, making it impractical for most enterprise network designs.