Which of the following is the MOST likely reason for the connection failure?

A server technician has been asked to upload a few files from the internal web server to the internal FTP server. The technician logs in to the web server using PuTTY, but the connection to the FTP server fails. However, the FTP connection from the technician’s workstation is suсcessful. To troubleshoot the issue, the technician executes the following command on both the web server and the workstation: ping ftp.acme.local

The IP address in the command output is different on each machine.

Which of the following is the MOST likely reason for the connection failure?
A . A misconfigured firewall
B . A misconfigured hosts.deny file
C . A misconfigured hosts file
D . A misconfigured hosts.allow file

View Answer

Answer: D

Explanation:

A misconfigured hosts file can cause name resolution issues on a server. A hosts file is a text file that maps hostnames to IP addresses on a local system. It can be used to override DNS settings or provide custom name resolution for testing purposes. However, if the hosts file contains incorrect or outdated entries, it can prevent the system from resolving hostnames properly and cause connectivity problems. To fix this issue, the administrator should check and edit the hosts file accordingly.