You are troubleshooting a network issue a user is having.After having changed his network adapter to static addressing,he can no longer reach the internet.However,the machine resolves Internet names to IP addresses.Observe the adapter's configuration below,and determine the problem.
IP Address: 172.31.20.103
Subnet: 255.255.255.0
DNS Server: 172.31.20.251
Gateway address: 172.31.19.254
A)Gateway is outside of the user's subnet
B)Change subnet mask to 255.255.255.128
C)The gateway no longer has a route to your ISP,so it does not deliver packets
D)DNS is providing incorrect or old resolution information,and the IP addresses given are no longer accurate

Question

Quizplus · Accepted Answer

The gateway address is outside of the user's subnet (172.31.19.254) while the user has an IP address of 172.31.20.103 with a subnet mask of 255.255.255.0. In this case, the user cannot reach the internet because the gateway is not on the same network segment as the user. Therefore, the correct solution is to change the gateway address to an address that is within the user's subnet, such as 172.31.20.1.

You Are Troubleshooting a Network Issue a User Is Having