CompTIA Network+ N10-006 Q595

Jeff, an administrator, has just finished installing a new switch and connected two servers with IPs of 192.168.105.20 and .30. The servers are able to communicate with each other, but are unable to reach the Internet. Jeff sees the following information in the
switch configuration:
interface VLAN 105
IP address 192.168.105.5 255.255.255.0
Jeff is able to ping the router at 192.168.105.1 from the switch. Which of the following is the MOST likely cause of the problem?

A. The subnet mask is incorrect.
B. A routing loop has occurred.
C. Jeff used a crossover cable to connect the switch to the gateway.
D. The server is missing default-gateway information.

Correct Answer: D