Computer Networks - IP Addressing
Consider a network using NAT with one public IP address. If three devices inside the network send requests to the internet simultaneously, what happens to their private IP addresses?
Consider a network using NAT with one public IP address. If three devices inside the network send requests to the internet simultaneously, what happens to their private IP addresses?
medium📝 Conceptual Q13 of 15
Step-by-Step Solution
Solution:
Step 1: Understand NAT behavior with multiple devices
NAT replaces private IPs with a single public IP and uses different port numbers to distinguish devices.Step 2: Analyze options based on NAT's port translation
They are all replaced by the same public IP address with different port numbers correctly describes this behavior. Private IPs are not left unchanged and visible on the internet, each device is not assigned a unique public IP address, and private IP addresses are not encrypted and sent as is.Final Answer:
They are all replaced by the same public IP address with different port numbers -> Option AQuick Check:
NAT uses one IP + ports = B [OK]
Quick Trick: NAT uses one IP plus ports for multiple devices [OK]
Common Mistakes:
MISTAKES- Assuming private IPs are visible on the internet
- Thinking each device gets a unique public IP
- Confusing NAT with encryption
Master "IP Addressing" in Computer Networks
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