An administrator is investigating the reason a Linux workstation is not resolving the website output: Which of the following is the most likely cause?

The correct answer is A. The static entry needs to be removed from /etc/hosts. Because /etc/hosts takes precedence over DNS, the incorrect IP (104.18.99.101) in your hosts file is being used - causing the unreachable error - even though DNS returns a different, valid address. Removing or correcting that entry lets the workstation resolve via DNS properly.

Troubleshooting

Question

An administrator is investigating the reason a Linux workstation is not resolving the website output: Which of the following is the most likely cause?

Options

AThe static entry needs to be removed from /etc/hosts.
BThe remote website does not support IPv6, and the workstation requires it.
CThe firewall needs to be modified to allow outbound HTTP and HTTPS.
DThe nameserver in /etc/resolv.conf needs to be updated to 8.8.8.8.

How the community answered

(46 responses)

A
74% (34)
B
7% (3)
C
4% (2)
D
15% (7)

Explanation

Because /etc/hosts takes precedence over DNS, the incorrect IP (104.18.99.101) in your hosts file is being used - causing the unreachable error - even though DNS returns a different, valid address. Removing or correcting that entry lets the workstation resolve via DNS properly.

Topics

#Linux networking#Name resolution#/etc/hosts#Troubleshooting

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