Which connectivity model meets these requirements?

A company with multiple branch offices wants a connectivity model to meet its network architecture requirements. The company focuses on ensuring low latency and efficient routing for its critical business applications.

Which connectivity model meets these requirements?
A . hub-and-spoke topology with SD-WAN technology, using dynamic routing and OSPF as the routing protocol
B . fully meshed topology with SD-WAN technology, using dynamic routing and BGP as the routing protocol
C . point-to-point topology using dedicated leased lines and static routing
D . star topology with internet-based VPN connections and static routing

View Answer

Answer: B

Explanation:

A fully meshed topology with SD-WAN technology, using dynamic routing and BGP as the routing protocol, meets the requirements of the company because it provides the following benefits:

It allows direct and secure connectivity between any two branch offices, without the need for a central hub or intermediary devices12. This reduces the latency and improves the performance of the critical business applications.

It leverages SD-WAN technology to optimize the traffic flow and application quality of service (QoS) across the WAN13. SD-WAN can dynamically select the best path for each application based on the network conditions and policies13. SD-WAN can also provide redundancy, security, and visibility for the WAN13.

It uses dynamic routing and BGP as the routing protocol to exchange routing information and establish connectivity between the branch offices14. BGP is a scalable and flexible protocol that can support multiple address families, such as IPv4 and IPv6, and multiple routing policies, such as local preference and route filtering14. BGP can also enable seamless integration with the cloud service providers (CSPs) and internet service providers (ISPs)14.

Reference: = 1: Designing and Implementing Cloud Connectivity (ENCC, Track 1 of 5) (Cisco U. login required) 2: Cisco SD-WAN Design Guide