Lab 7.2 and Listen directive
I was able to access the Apache-served document of this lab (/ipvhost/index.html) only after editing /etc/httpd.conf and adding this directive:
(The IP matches the virtual interface I created)
I'm on a Fedora machine (not a real server!), so I'm wondering if the Lab was just missing this bit of information, or if other configurations won't need such a directive.