N10-009 Question #1: Real Exam Question with Answer & Explanation

Question

A network administrator is notified that a user cannot access resources on the network. The network administrator checks the physical connections to the workstation labeled User 3 and sees the Ethernet is properly connected. However, the network interface's indicator lights are not blinking on either the computer or the switch. Which of the following Is the most likely cause?

Options

• AThe switch failed.
• BThe default gateway is wrong.
• CThe port Is shut down.
• DThe VLAN assignment is incorrect.

Explanation

When a network interface's indicator lights are not blinking on either the computer or the switch, it suggests a physical layer issue. Here is the detailed reasoning: Ethernet Properly Connected: The Ethernet cable is correctly connected, eliminating issues related to a loose or faulty cable. No Indicator Lights: The absence of blinking indicator lights on both the computer and the switch typically points to the port being administratively shut down. Switch Port Shut Down: In networking, a switch port can be administratively shut down, disabling it from passing any traffic. This state is configured by network administrators and can be verified and changed using the command-line interface (CLI) of the switch. Command to Check and Enable Port: Switch# configure terminal Switch(config)# interface [interface id] Switch(config-if)# no shutdown The command no shutdown re-enables the interface if it was previously disabled. This will restore the link and the indicator lights should start blinking, showing activity.

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