Quiz: DNS and SSH

Question 1 of 10

Where the system looks up an address for a name, what dig answers mean, and why an /etc/hosts workaround is worse than a fixed nameserver. The two SSH login checks, key file modes, a changed server key and the sshd settings in force. The questions follow the lessons "Why the address works and the name does not" and "SSH — trusting the server and logging in with a key".

10 questions · threshold 70%

One correct answer

`curl http://10.0.0.10/` opens the site, while `curl http://app.internal/` prints `Could not resolve host: app.internal`. Where do you look for the cause?

In the web server settings.
In a filter on the server.
In the permissions on the site's files.
In how the client finds an address for the name.

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Quiz: DNS and SSH

curl http://10.0.0.10/ opens the site, while curl http://app.internal/ prints Could not resolve host: app.internal. Where do you look for the cause?

`curl http://10.0.0.10/` opens the site, while `curl http://app.internal/` prints `Could not resolve host: app.internal`. Where do you look for the cause?