6.3.3 Check Your Understanding – NAT Advantages and Disadvantages Answers

1. True or False? A side effect of NAT is that it hides the inside local IP address of a host from the outside network.

  • True
  • False

Explanation: The correct answer is True. NAT hides the IPv4 addresses of inside hosts from the outside network.

2. True or False? With NAT overload, each inside local IP address is translated to a unique inside global IP address on a one-for-one basis.

  • True
  • False

Explanation: The correct answer is False. NAT with overload (PAT) allows many internal hosts to share a single, or very few, public IPv4 addresses.

3. True or False? The use of NAT makes end-to-end traceability between source and destination easier.

  • True
  • False

Explanation: The correct answer is False. With NAT, end-to-end traceability is lost, making it more difficult to trace packets and to perform troubleshooting.

4. True or False? Tunneling protocols such as IPsec do not work well through NAT.

  • True
  • False

Explanation: The correct answer is True. NAT complicates the use of tunneling protocols, such as IPsec, because NAT modifies values in the headers, causing integrity checks to fail.

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