In a certain office, all devices can access shared network drives but are unable to connect to the Internet. Initial checks confirm that addresses and network masks are correctly configured, and name resolution is functioning for internal servers. The system administrator suspects a configuration error related to the gateway settings. Which of the following actions should MOST likely resolve the external connectivity issue?
Modify the gateway setting on the router.
Reconfigure the naming resolution settings for external servers.
Power cycle all network routers and switches.
Ensure all client devices are set with matching network configurations.
When users can reach resources on their own subnet but cannot reach external networks, the default gateway is the most likely point of failure. Correcting the gateway address or route on the router re-establishes the path off-network. Changing DNS affects only name resolution, power-cycling hardware does not fix a bad configuration, and the clients' settings have already been verified.
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What is a default gateway and why is it important?
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What could cause a misconfiguration in gateway settings?