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Cloud Integration and Hybrid Network Architecture Questions

Designing connectivity and integration between on premise infrastructure and public cloud environments, including hybrid and multi cloud topologies. Topics include dedicated interconnect options and internet based connectivity, routing and network topology trade offs, virtual private networks and software defined wide area networks, network virtualization, security boundary and identity considerations across environments, latency and throughput implications, cost trade offs for interconnects, and operational practices for managing hybrid infrastructure and multi cloud complexity.

HardSystem Design
0 practiced
Design a global hybrid network for a latency-sensitive financial trading application spanning multiple on-prem colocation sites and two cloud providers. Requirements: intra-data-center latency <= 1 ms, inter-region <= 10 ms, deterministic routing, and sub-millisecond failover. Provide physical and logical components, interconnect options, clock synchronization and protocol optimizations you would use.
MediumTechnical
0 practiced
Design a performance testing plan to validate throughput, latency, jitter, and failover behavior of a hybrid interconnect (Direct Connect + VPN fallback). Detail test cases, metrics to capture, tools (iperf, BGP session probes, synthetic transactions), automation approach, and pass/fail criteria for operational acceptance.
HardTechnical
0 practiced
Evaluate the trade-offs of synchronous replication between an on-prem primary database and a cloud secondary for stateful workloads. Discuss the impact on latency, application throughput, consistency guarantees, RPO/RTO, the risk of write stalls, and techniques like WAN acceleration or semi-synchronous replication to mitigate issues.
MediumTechnical
0 practiced
Compare TLS and IPsec for encrypting hybrid site-to-site and service-to-service traffic. Discuss termination points, performance and acceleration options, key management implications, and scenarios where layering TLS over IPsec (or vice versa) is appropriate for defense in depth.
MediumTechnical
0 practiced
Design an SD-WAN architecture to connect 200 branch offices to a hybrid cloud. Requirements: average 20 Mbps per branch, prioritized VoIP traffic, centralized orchestration, local internet breakout for SaaS, end-to-end encryption, and policy-based path selection. Describe controller placement, resilience, security integration, and orchestration approach.

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