* Objective: Identify a VPN disadvantage for large dataset migration.
* Option A: VPNs can be secure with IPSec; not inherently less secure-incorrect.
* Option B: VPNs are automatable with IaC (e.g., Terraform)-incorrect.
* Option C: Public internet limits VPN throughput due to bandwidth and latency variability-correct disadvantage.
* Option D: VPNs are compatible with OCI services-incorrect.
* Conclusion: Option C is the key disadvantage.
Oracle notes:
* "Public internet-based VPNs face throughput limitations due to bandwidth and latency variability, impacting large data migrations."This supports Option C. Reference:VPN Limitations - Oracle Help Center(docs.oracle.com/en-us/iaas/Content/Network/Tasks/settingupIPSec.htm#limitations).