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What occurs as soon as the hosts on a private network try to access a remote network over the Internet using a Cisco router configured with PAT?
The router assigns an IP address to the host based on the priority of the connection.
The router assigns an IP address that is not being used from a table of registered IP addresses.
The router assigns the host, a port number which is added to the internal IP address.
The router assigns a single IP address from a table of registered IP addresses for the duration of the connection.
The most common Network Address Translation NAT method to use is PAT. In this method one IP address is assigned to the networks router. When a host connects to the Internet, the router will assign a TCP port number which is added to the internal IP address, giving the host a unique address. If another computer in the same network connects to the internet at the same time, the router will assign the same local IP address with a different port number. Even though both hosts are using the same public IP address and accessing the Internet at the same time, the router knows which host to send specific packets to because each host has a unique internal address.
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