A technician is troubleshooting a desktop computer in an enterprise office that lost network connectivity following a switch maintenance window. Running `ipconfig` displays an IP address of and a subnet mask of . Additionally, the technician observes that the link light on the workstation's network interface card (NIC) is unlit. Which of the following actions should the technician perform to address these issues? (Select TWO.)
- Inspect the physical network cable connection and switch port link LEDs to verify physical layer connectivity.Answer
- BReconfigure the local client's preferred DNS server setting to point to the 169.254.0.0/16 default gateway.
- Verify the VLAN tags and DHCP relay helper address configuration on the newly maintained switch.Answer
- DAdjust the 2.4 GHz wireless access point to transmit on channel 4 to avoid interference with the Ethernet switch.
Answer
The technician should inspect the physical network cable and switch port link LEDs to verify physical layer connectivity, and verify the VLAN tags and DHCP relay helper configuration on the new switch to restore DHCP address assignment.
Inspecting physical cables and switch port LEDs addresses the unlit link light by verifying physical layer connectivity. Checking switch VLAN tagging and DHCP relay configuration addresses the APIPA address assignment () by restoring communication between the client and the DHCP server across subnets.
Step-by-Step Solution
Key Concept
Wired Network Troubleshooting and APIPA Recovery