In which two circumstances are private IPv4 addresses appropriate? (Choose two)

Question:
In which two circumstances are private IPv4 addresses appropriate? (Choose two)

• on internal hosts that stream data solely to external resources
• on hosts that communicates only with other internal hosts
• on the public-facing interface of a firewall
• on hosts that require minimal access to external resources
• to allow hosts inside an enterprise to communicate in both directions with hosts  outside the enterprise

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