NAT (Network Address Translation)

NAT (Network Address Translation)

• A. A program that assigns IP addresses
• B. Network Address Translation is a process that the router uses to act like a translator, takes private IPs and uses public IP to send and receive information from websites
• C. NAT stands for Network Access Troubleshooting
• D. It encrypts IP addresses

Answer: (B)

The main idea being tested is how NAT lets devices on a private network reach the Internet by translating addresses. NAT is a process used by a router to convert private IP addresses from your local network into a public IP address for traffic going to websites, and then translate the returning traffic back to the correct private IP. This lets many devices share a single public IP, with the router keeping track of which internal device corresponds to which external connection, often using port numbers to distinguish simultaneous conversations. This matches the description that NAT is a mechanism the router uses to take private IPs and use a public IP to send and receive information from websites. It’s not a program that assigns IP addresses (that’s DHCP), it doesn’t stand for Network Access Troubleshooting, and it doesn’t encrypt IP addresses (encryption is a separate function).

The main idea being tested is how NAT lets devices on a private network reach the Internet by translating addresses. NAT is a process used by a router to convert private IP addresses from your local network into a public IP address for traffic going to websites, and then translate the returning traffic back to the correct private IP. This lets many devices share a single public IP, with the router keeping track of which internal device corresponds to which external connection, often using port numbers to distinguish simultaneous conversations.

This matches the description that NAT is a mechanism the router uses to take private IPs and use a public IP to send and receive information from websites. It’s not a program that assigns IP addresses (that’s DHCP), it doesn’t stand for Network Access Troubleshooting, and it doesn’t encrypt IP addresses (encryption is a separate function).