A network administrator is troubleshooting an issue with a newly installed web server. The web server is available to internal users but unavailable to Internet users. The server’s network configuration is shown below:
Which of the following is the MOST likely reason why the server is unavailable from the Internet?
A.
NAT has not been configured on the border firewall.
B.
The Layer 3 switchport connecting the web server is blocking port 80.
C.
The gateway IP has been incorrectly configured.
D.
The configured DNS server is not reachable by the web server.