Question

Difficulty: EasyUtilizing Command-Line Network Troubleshooting Utilities

A network technician is systematically troubleshooting a connectivity failure from a client workstation to a remote application server. Place the following command-line utilities in the logical order they should be executed to isolate the issue from local interface settings out to remote route reachability.

  1. 1Execute `ipconfig /all` to verify local host network configuration and default gateway assignment.
  2. 2Execute `ping 192.168.1.1` to test ICMP reachability to the local default gateway.
  3. 3Execute `tracert 10.0.50.25` to trace the hop-by-hop routing path to the remote server.
  4. 4Execute `nslookup app.corp.internal` to verify DNS host name resolution for the target server.

Answer

The correct logical order begins with checking local IP settings using `ipconfig`, verifying local gateway reachability using `ping`, tracing the remote path using `tracert`, and verifying DNS resolution using `nslookup`.
Standard network troubleshooting follows a logical sequence from local host configuration (`ipconfig`), to local subnet reachability (`ping`), to multi-hop path analysis (`tracert`), and finally upper-layer services like DNS resolution (`nslookup`).

Step-by-Step Solution

1
Check local host IP assignment.
Confirms the host has a valid IP configuration and default gateway.
Local IP misconfigurations render all outbound network diagnostics invalid.
2
Test local gateway ICMP reachability.
Confirms local Layer 2 and Layer 3 communication to the router.
Traffic cannot reach remote networks if the local gateway cannot be reached.
3
Trace path across intermediate network hops.
Identifies packet loss or latency across remote routers.
Helps distinguish between local network issues and upstream routing failures.
4
Verify DNS name resolution.
Confirms the DNS server resolves the FQDN to the correct destination IP address.
Ensures application accessibility issues are not caused by name resolution errors.

Key Concept

Structured Command-Line Diagnostic Sequence
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