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Zorluk: OrtaWired and Wireless Network Issues

A network technician is called to troubleshoot a newly installed desktop computer in a branch office that cannot access local file shares or the internet. Following a standard bottom-up troubleshooting methodology, which of the following actions should the technician perform FIRST?

  1. Inspect the status LED indicator lights on the workstation network interface card.Cevap
  2. B
    Run a traceroute command to trace the network path to an external web server.
  3. C
    Reconfigure the local DNS server settings to assign a valid IP address lease.
  4. D
    Replace the default gateway router assuming an APIPA address indicates appliance failure.

Cevap

Inspect the status LED indicator lights on the workstation network interface card.
Inspecting the LED indicator lights on the network interface card is the correct initial action under a bottom-up troubleshooting strategy. Verifying that a physical connection exists prevents unnecessary higher-layer protocol testing.

Adım Adım Çözüm

1
Determine the required troubleshooting methodology.
A bottom-up approach requires starting at OSI Layer 1 (Physical layer).
CompTIA troubleshooting standards mandate verifying physical connectivity before testing software protocols or routing.
2
Identify the Physical layer diagnostic action.
Checking the network interface card (NIC) LED lights indicates whether a physical link and electrical signal exist.
If the link light is unlit, cable, jack, or port issues must be resolved before any Layer 3 or application data can transmit.

Anahtar Kavram

Physical Layer Network Troubleshooting
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Konular

Wired and Wireless Network Issues

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