Question

You have an office network connected to the Internet as shown in the Exhibit. The network has three subnets, all with client computers.

The Web1 server on Subnet1 hosts a small website used for traveling employees. Employees must be able to contact the web server from the Internet. All other hosts on the private network need to have full Internet connectivity for browsing the web and sending email.

On which routers should you configure NAT?
1) Router1 only
2) Router2 only
3) Router3 only
4) Router1 and Router2
5) Router2 and Router3
6) Router1, Router2, and Router3

Answer 1

NAT should be configured on Router1, which is most likely the edge router connecting the local network to the internet, allowing both the Web1 server access from the internet and full internet connectivity for other hosts.

Step-by-step explanation:

The question pertains to the configuration of Network Address Translation (NAT) in a network with three subnets and an internet connection. NAT is used to translate private IP addresses to a public IP address, allowing multiple devices on a local network to access the internet using a single IP address. Taking into account the requirement for the Web1 server on Subnet1 to be accessible from the internet and for all other hosts to have full internet connectivity, NAT should be configured on the router that directly connects the local network to the internet service provider.

Since the question does not specify the exact network topology and the roles of each router, a general recommendation would be to enable NAT on the router at the network's edge, which is most likely Router1. This router would typically be the one assigning the public IP address to the outbound traffic. Enabling NAT on Router1 would allow the traveling employees to access the Web1 server as well as let other hosts browse the web and send emails.

Thus, the answer would be option 1) Router1 only.