What are three advantages of using private IP addresses and NAT? (Choose three.)

Question:
What are three advantages of using private IP addresses and NAT? (Choose three.)

• hides private LAN addressing from outside devices that are connected to the Internet
• permits LAN expansion without additional public IP addresses
• reduces CPU usage on customer routers
• creates multiple public IP addresses
• improves the performance of the router that is connected to the Internet
• conserves registered public IP addresses

Explanation: Private IP addresses are designed to be exclusively used for internal networks and they cannot be used on the Internet. Thus they are not visible directly from the Internet and they can be used freely by network administrators for internal networks. In order for the internal hosts to access the Internet, NAT is used to translate between private and public IP addresses. NAT takes an internal private IP address and translates it to a global public IP address before the packet is forwarded.

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