A network technician is diagnosing workstation configuration and connectivity issues across different network segments. Match each observed host diagnostic symptom on the left with its underlying network configuration root cause on the right.
- A workstation receives an IP address of 169.254.10.45 and can only communicate with hosts on the local link.The DHCP server is unreachable or offline, resulting in automatic APIPA self-assignment.
- A host successfully pings 8.8.8.8 but fails to reach www.comptia.org using a web browser.The DNS server address is missing, unreachable, or improperly configured on the host.
- A client device can communicate with neighboring devices on 192.168.1.0/24 but cannot reach any external subnets.The default gateway IP address is misconfigured or missing from the network interface settings.
- A workstation displays an IP address of fe80::211:22ff:fe33:4455 and communicates locally without a DHCP server.The host automatically generated an IPv6 link-local address for local segment communications.
Answer
Matching pairs: (1) 169.254.10.45 address matches unreachable DHCP server resulting in APIPA; (2) Ping 8.8.8.8 success with browser URL failure matches missing or misconfigured DNS server; (3) Local subnet communication success with remote subnet failure matches misconfigured default gateway; (4) fe80:: address matches IPv6 link-local auto-configuration.
Each diagnostic symptom maps precisely to IP protocol principles: APIPA (169.254.x.x) indicates DHCP timeout; domain-name-only failure isolates DNS misconfiguration; inability to leave the local subnet indicates a missing/invalid default gateway; and fe80:: prefixes represent standard self-configured IPv6 link-local addresses.
Step-by-Step Solution
Key Concept
IP Addressing, Default Gateways, DNS Resolution, APIPA, and IPv6 Link-Local auto-configuration
Estimated Time:3m 0s