300-415 Question 190
Single answerAn enterprise is implementing Cisco SD-WAN and wants to design its network to ensure that all remote branches have direct communication with each other without routing traffic through a data center. Which topology should the enterprise choose?
- A
Full-mesh topology
- B
Hub-and-spoke topology
- C
Partial-mesh topology
- D
Star topology
Show answer and explanation
Correct answer: A
Explanation
For direct branch-to-branch communication, a full-mesh topology is the most appropriate choice as it enables all sites to interconnect directly without relying on a central hub or intermediary. Other topologies, such as hub-and-spoke or star, introduce a dependency on a central hub, which does not satisfy the requirement for direct communication.
- A. Correct.
Full-mesh topology allows all sites in the network to communicate directly with each other without any intermediary, making it suitable for scenarios requiring direct branch-to-branch communication.
- B. Incorrect.
Hub-and-spoke topology requires traffic to flow through a central hub (e.g., a data center) for communication between branches, which does not meet the requirement for direct branch-to-branch communication.
- C. Incorrect.
Partial-mesh topology allows selective direct connections between some sites but not all, which might not guarantee full branch-to-branch communication.
- D. Incorrect.
Star topology is similar to hub-and-spoke, with traffic routed through a central hub, and does not allow direct communication between branches.