Final answer:
The possible cause for a user to be able to access a file share resource on a server located in the same office but not access the internet is that the default gateway address is misconfigured on the PC. The correct answer is D.
Step-by-step explanation:
The possible cause for a user to be able to access a file share resource on a server located in the same office but not access the internet is that the default gateway address is misconfigured on the PC.
The lack of internet access despite connectivity to a local server suggests a misconfigured default gateway on the PC as the most likely cause. Since local access is possible, issues with the switch, IPv4 settings, or DHCP server are less probable.
If a user can access a file share on a local server but cannot access the internet, the issue is likely network-related. The probable cause is that the default gateway address is misconfigured on the PC. Since the user can access local resources, we know that the local area network (LAN) connectivity is functional and therefore neither the switch nor the IPv4 address and subnet mask are likely to be the issue. The switch primarily facilitates network communication within the local network, and a misconfigured IPv4 address or subnet mask would typically prevent access to local network resources. A misconfigured default gateway, which is necessary for communication with external networks like the internet, would result in a failure to access internet resources. Lastly, if the DHCP server were disconnected, the PC might not receive an IP address at all, but since the user can access local resources, DHCP functionality is not the primary concern.