A technician is troubleshooting network connectivity issues after a new wireless router was installed in an office.
Users who connect to the new router are unable to access LAN resources.
Which of the following is the MOST likely cause of the issue?
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A. B. C. D.A.
The most likely cause of the network connectivity issue after a new wireless router was installed in an office, where users who connect to the new router are unable to access LAN resources, is that there are conflicting gateways on the network.
Explanation: When a new wireless router is installed in an office, it is common for it to have a different default gateway than the previous router. The default gateway is the IP address that devices on the network use to access the internet or other networks. If there are multiple default gateways on the same network, devices may become confused about which gateway to use, and this can result in connectivity issues.
In this scenario, the users who connect to the new wireless router are unable to access LAN resources, which suggests that the issue is with the internal network configuration rather than the internet connection. If there are conflicting DHCP servers on the network, it may cause IP address conflicts, but it would not prevent access to LAN resources. Conflicting ARP records may cause connectivity issues, but it is less likely in this scenario. Conflicting IP protocols are also less likely to cause the issue since most networks use the same IP protocol.
Therefore, the most likely cause of the issue is that there are conflicting gateways on the network. To resolve the issue, the technician should check the network configuration and ensure that there is only one default gateway set up for the network.