A network technician is troubleshooting a newly installed desktop computer in an enterprise office that cannot access local file shares or internet resources. The technician runs the command `ipconfig /all` on the workstation and observes the following output:
IPv4 Address . . . . . . . . . . . : 169.254.108.73
Subnet Mask . . . . . . . . . . . : 255.255.0.0
Default Gateway . . . . . . . . . :
DNS Servers . . . . . . . . . . . :
The workstation is connected directly to a network wall outlet using a tested Cat6 Ethernet cable, and the link light on the network interface card (NIC) is solid green with flickering activity. Which of the following is the MOST likely cause of this issue?
- The workstation is unable to communicate with a DHCP server to receive an automatic IP configuration.Cevap
- BThe physical network cable is broken, causing a complete failure at Layer 1 of the OSI model.
- CThe DNS server is offline and failing to issue IP address leases to client devices.
- DThe workstation is experiencing co-channel signal interference on its 2.4 GHz wireless network adapter.
Cevap
The workstation is unable to communicate with a DHCP server to receive an automatic IP configuration.
An IPv4 address in the range of 169.254.0.1 through 169.254.255.254 indicates APIPA (Automatic Private IP Addressing). The operating system assigns an APIPA address when the client is configured for dynamic IP addressing but fails to receive a response from a DHCP server. Since the link light is active, the physical connection exists, pointing to a DHCP server reachability or service issue.
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Anahtar Kavram
Automatic Private IP Addressing (APIPA) and DHCP Reachability