N10-009 Network Troubleshooting Practice Question

Answer analysis

Option-by-option breakdown

For each option: why learners choose it and why it is or isn't the right answer here.

• ✓

  Connect router to modem and power, connect computer via Ethernet, access web interface, configure SSID, select WPA2-PSK and enter passphrase, save settings.

  Why this is correct

  This sequence correctly establishes the physical network infrastructure first by connecting the router to the modem and power, then provides a direct management link via Ethernet to a computer. This allows the user to reliably access the router's web-based configuration interface. Subsequently, the essential wireless parameters—SSID for network identification and WPA2-PSK with a strong passphrase for robust security—are configured before saving, which applies all changes and activates the wireless network.

• ✗

  Connect router to modem and power, access web interface, configure SSID, select WPA2-PSK and enter passphrase, connect computer via Ethernet, save settings.

  Why it's wrong here

  This order is incorrect because attempting to access the router's web interface requires an active network connection between the computer and the router. Placing 'connect computer via Ethernet' after 'access web interface' creates an impossible scenario, as the computer would lack the necessary physical layer connectivity to establish communication with the router's management interface at that point.

• ✗

  Connect computer via Ethernet, access web interface, select WPA2-PSK and enter passphrase, configure SSID, save settings, connect router to modem and power.

  Why it's wrong here

  This sequence is fundamentally flawed because the router must be powered on and connected to the modem to establish a functional network infrastructure before any client device can connect or attempt configuration. Without the router being operational and connected to the internet source, the computer would be unable to obtain an IP address or reach the router's web interface, rendering subsequent steps impossible.

• ✗

  Connect router to modem and power, connect computer via Ethernet, access web interface, save settings, configure SSID, select WPA2-PSK.

  Why it's wrong here

  This option is incorrect because saving settings prematurely, before the SSID and WPA2-PSK passphrase have been configured, would result in no changes being applied to the wireless network parameters. The router would simply save its current, unconfigured state, requiring the user to re-enter the configuration interface to properly define the wireless network's name and security settings.