An administrator has set up serverA and serverB to use the /etc/hosts.equiv file so that applications
on serverA can remotely run commands on serverB. Which command will verify if a new user from
serverA is trusted on serverB?

The ping loopback hangs with no output. Which of the following is the most likely cause?

After updating serverB’s network configurations, an administrator notices that serverA, which
resides in a different subnet, is unable to communicate with serverB via ssh or telnet. As ping’s to
the server fail, the administrator logs onto serverB via a console and finds an available interface en0
in the ‘up’ state. From the console connection, en0 can communicate with other servers in the same
subnet. What is the most likely cause of the problem?