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A developer wants to isolate pod traffic using a CNI plugin that supports network segmentation and encryption. Which combination of CNI plugins and features best fits this need?

hard📝 Workflow Q9 of 15
Kubernetes - Networking
A developer wants to isolate pod traffic using a CNI plugin that supports network segmentation and encryption. Which combination of CNI plugins and features best fits this need?
ABridge plugin without encryption
BFlannel with VXLAN only
CCalico with IPsec encryption
DHost-local IPAM without network policies
Step-by-Step Solution
Solution:
  1. Step 1: Identify plugins supporting encryption and segmentation

    Calico supports network segmentation and can use IPsec for encryption.
  2. Step 2: Evaluate other options

    Flannel with VXLAN does not provide encryption by default; Bridge and Host-local lack these features.
  3. Final Answer:

    Calico with IPsec encryption -> Option C
  4. Quick Check:

    Network isolation + encryption = Calico + IPsec [OK]
Quick Trick: Use Calico with IPsec for secure pod isolation [OK]
Common Mistakes:
  • Assuming Flannel VXLAN encrypts traffic
  • Choosing Bridge plugin for encryption
  • Ignoring network policy support

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