An ISP gives you an IP address of 209.183.160.45/30 to configure your end of the serial connection. Which IP address will be on the side at the ISP?

The valid IP address range for 209.183.160.45/30 is 209.183.160.45–209.183.160.46. Both IP addresses are part of the 209.183.160.44/30 network. The IP address 209.183.160.47/30 is the broadcast address for the 209.182.160.44/30 network. The IP address 209.183.160.43/30 is the broadcast IP address for the 209.183.160.40/30 network.