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Zorluk: ZorUtilizing Command-Line Network Troubleshooting Utilities

A network administrator working on a Windows host is troubleshooting a connection failure to an off-site database server at IP address 198.51.100.25198.51.100.25 running on TCP port 54325432. Place the following command-line diagnostic procedures in the correct logical sequence, following a standard bottom-up network troubleshooting methodology starting from local network configuration verification up to specific transport-layer service testing.

  1. 1Run ipconfig /all to inspect local network interface configuration, assigned IPv4 parameters, and default gateway settings.
  2. 2Run ping 192.168.1.1 to confirm basic Layer 3 ICMP Echo reachability to the local default gateway router.
  3. 3Run tracert 198.51.100.25 to map intermediate router hops and pinpoint where path drops or delays occur across the wide-area route.
  4. 4Run Test-NetConnection 198.51.100.25 -Port 5432 to test TCP socket connectivity directly to the application service.

Cevap

The correct logical order begins with local host configuration analysis (ipconfig /all), proceeds to default gateway ICMP verification (ping 192.168.1.1), follows with path route tracing (tracert 198.51.100.25), and concludes with targeted transport-layer port testing (Test-NetConnection 198.51.100.25 -Port 5432).
Following the CompTIA and standard OSI bottom-up troubleshooting methodology, an administrator must first verify local host network interface and address configuration (ipconfig /all), then test local network Layer 3 reachability to the default gateway (ping 192.168.1.1), followed by path analysis across intermediate routers to the target destination IP (tracert 198.51.100.25), and lastly validate specific transport-layer TCP port availability (Test-NetConnection -Port 5432).

Adım Adım Çözüm

1
Verify host IP setup
Confirm local IP, subnet mask, and gateway address using ipconfig /all.
Troubleshooting higher layers is invalid if the local machine lacks a valid IP address or local routing table entry.
2
Verify local gateway reachability
Confirm Layer 3 ICMP communication using ping 192.168.1.1.
Ensures the host can forward IP packets off the local broadcast domain to its configured gateway router.
3
Verify multi-hop path integrity
Identify intermediate hop failures using tracert 198.51.100.25.
Determines whether packet loss occurs on the internal network, ISP WAN links, or remote edge routers.
4
Verify Layer 4 port connectivity
Test TCP port 5432 handshake using Test-NetConnection 198.51.100.25 -Port 5432.
Validates that firewalls permit traffic on TCP 5432 and that the remote database daemon actively accepts connection requests.

Anahtar Kavram

Layered Command-Line Network Troubleshooting Workflow
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