When a new server is connected but only accessible via IP address, what should the administrator check first?

When a new server is connected but only accessible via IP address, what should the administrator check first?

• A. Firewall settings
• B. Hosts file
• C. Network cables
• D. Router configuration

Answer: (B)

In a scenario where a new server is connected to the network but is only accessible via its IP address, the most prudent first step for the administrator is to check the hosts file. The hosts file could be misconfigured or missing entries that map the server's hostname to its corresponding IP address. This could lead to situations where name resolution fails, causing the server to not be reachable via its hostname, even though it can be accessed directly through its IP address. By verifying the hosts file, the administrator can ensure that the hostname is correctly mapped to the server’s IP address, enabling access through a user-friendly name instead of relying solely on the IP address. This is often a common oversight when adding a new server, particularly in environments where DNS is not fully configured or operational yet. Other factors such as firewall settings, network cables, and router configuration are certainly important in the connectivity of a server; however, checking the hosts file is the most relevant first step when dealing specifically with issues of hostname resolution.

In a scenario where a new server is connected to the network but is only accessible via its IP address, the most prudent first step for the administrator is to check the hosts file. The hosts file could be misconfigured or missing entries that map the server's hostname to its corresponding IP address. This could lead to situations where name resolution fails, causing the server to not be reachable via its hostname, even though it can be accessed directly through its IP address.

By verifying the hosts file, the administrator can ensure that the hostname is correctly mapped to the server’s IP address, enabling access through a user-friendly name instead of relying solely on the IP address. This is often a common oversight when adding a new server, particularly in environments where DNS is not fully configured or operational yet.

Other factors such as firewall settings, network cables, and router configuration are certainly important in the connectivity of a server; however, checking the hosts file is the most relevant first step when dealing specifically with issues of hostname resolution.