67. An administrator is troubleshooting a Layer 3 communication issue between the web server and the database server. The administrator finds the following information. Which of the following corrects the communication issue?
Answer: A
Changing the subnet on the database server to 255.255.255.0
Adjusting the subnet on the database server to 255.255.255.0 aligns it with the network configuration needed for proper Layer 3 communication with the web server, thus resolving the communication issue.
A) Changing the subnet on the database server to 255.255.255.0
This option is correct as it directly addresses the Layer 3 communication problem. By changing the subnet mask to 255.255.255.0, the database server can properly communicate with devices within the same subnet, including the web server, assuming they share the same network range.
B) Changing the subnet on the firewall to 255.255.255.128
This option is incorrect because changing the firewall's subnet does not impact the database server's ability to communicate with the web server. The firewall's configuration is relevant only if it restricts traffic but does not resolve the core issue of the database server's subnet configuration.
C) Changing the default gateway on the database server to 1.2.3.4
This option is incorrect as it does not resolve the Layer 3 issue. Changing the default gateway to 1.2.3.4 does not directly address the subnet configuration, which is crucial for local communication between the web server and the database server.
D) Changing the IP address on the database server to 192.168.1.150
This option is also incorrect because merely changing the IP address without adjusting the subnet mask may not resolve the communication issue. The server needs to be in the correct subnet to communicate effectively with the web server.
E) Changing the gateway on the firewall to 192.168.1.1
This option is incorrect as it does not address the Layer 3 communication issue directly between the web server and the database server. Changing the gateway on the firewall may affect overall network traffic but does not fix the subneting issue of the database server.
Conclusion
The correct answer is option A, as changing the subnet on the database server to 255.255.255.0 allows it to communicate effectively with the web server within the same network. All other options fail to resolve the fundamental Layer 3 communication issue, either by not addressing the subnet directly or by altering configurations that do not affect the core problem.