Which of the following networking considerations is important for reliable telemetry delivery across sites?

• A. Maintain low-latency links only and ignore firewall rules.
• B. Rely entirely on public internet without VPNs or QoS.
• C. QoS prioritization, secure VPNs, firewall rules, reliable WAN, latency bounds, and gateway device redundancy are important.
• D. Only use standard Ethernet cabling and assume Internet will handle it.

Answer: (C)

To deliver telemetry reliably across sites, you need a network design that guarantees secure, prioritized, and continuously available transport from one site to another. That means several pieces working together: Quality of Service to make sure telemetry packets get priority on congested networks, secure VPNs to protect data and maintain stable tunnels between sites, firewall rules that allow the telemetry traffic while still enforcing security, a reliable WAN with sufficient bandwidth and redundant paths to avoid single points of failure, latency bounds so you can meet timing requirements and keep jitter in check, and gateway device redundancy so if one edge device or path fails, another can take over with minimal impact. When these elements are in place, telemetry can travel quickly, securely, and consistently, even in imperfect network conditions.

Choosing only low-latency links without firewall rules leaves security and access control unmanaged. Relying entirely on the public Internet without VPNs or QoS makes transport insecure and unpredictable. Using only standard Ethernet cabling and assuming the Internet will handle everything ignores security, prioritization, and resilience.