Implementing and Operating Cisco Enterprise Network Core Technologies (ENCOR) v1.2ArchitectureMedium
A large enterprise is migrating its applications to a hybrid cloud model. The network team needs to ensure seamless connectivity and consistent security policies between on-premises data centers and multiple public cloud providers. Which architectural component is crucial for achieving this goal while minimizing latency and optimizing traffic flow?
- AVirtual Private Network (VPN) tunnels over public internet
- BDirect Internet Access (DIA)
- CSoftware-Defined Wide Area Network (SD-WAN)
- DDedicated private links (e.g., AWS Direct Connect, Azure ExpressRoute)
Show answer & explanationAnswer & explanation
Correct answer: D. Dedicated private links (e.g., AWS Direct Connect, Azure ExpressRoute)
Dedicated private links (like AWS Direct Connect or Azure ExpressRoute) provide direct, high-bandwidth, low-latency connections between on-premises data centers and public cloud environments, bypassing the public internet. This is crucial for seamless connectivity, consistent security, and optimized traffic flow in a hybrid cloud model, especially when minimizing latency is a priority.
Why the other options are wrong
- A. VPN tunnels over the public internet are cost-effective but introduce higher latency and variability, making them less ideal for seamless, high-performance hybrid cloud integration compared to dedicated links.
- B. DIA provides direct internet access for branches but doesn't offer the low-latency, secure, or consistent policy enforcement required for seamless hybrid cloud connectivity.
- C. SD-WAN can optimize traffic and apply policies, but without dedicated private links, it still relies on the public internet for cloud connectivity, which may not meet latency and security requirements as effectively.
Hybrid Cloud Connectivity
Connecting on-premises data centers with public cloud infrastructure to create a unified computing environment.
- Requires secure, reliable, and often low-latency links.
- Options include VPNs, SD-WAN, and dedicated private connections.
- Goals: consistent policies, optimized traffic, seamless resource access.
Memory trick: Dedicated links are the 'express lane' for hybrid cloud traffic.