16. You have a file /etc/resolv.conf, but the computer does not use the configured DNS servers to look up
host names. What is most likely the problem?
A. The hosts entry in your /etc/nsswitch.conf does not list dns.
B. You do not have a /etc/named.conf file.
C. The localhost hostname is not properly configured in /etc/hosts.
D. The named daemon is not running on your computer.
Answer: A
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17. You need to run a second Apache server on the same IP address. Which of the following is true?
A. You cannot run more than one Apache on one IP address.
B. You have to add a new entry in /etc/services.
C. The second Apache server must listen on an other port.
D. The second Apache must be a child process of the first.
Answer: C
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18. These lines are taken from /etc/smb.conf:
workgroup = group1
guest account = nobody
What else is needed for this to work?
A. nobody must be a valid group on the server.
B. nobody must be a user name listed in /etc/passwd.
C. group1 must be a valid group on the server.
D. workgroup must be a valid group on the server.
Answer: B
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19. You have generated a DSA authentication key on host linux1. In order to log into host linux2 with the
new key, what do you need to do?
A. Copy the new authentication key into /etc/ssh/sshd_config on linux2.
B. Copy the new authentication key into $HOME/.ssh/authorized_keys on linux2.
C. Copy the new authentication key into $HOME/.ssh/id_dsa on linux2.
D. Copy the new authentication key into $HOME/.ssh/id_dsa on linux1.
E. Log into linux2 using the command ssh -key.
Answer: B
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20. You want to make the directory /local available via NFS. Everything works fine, but on the client
machine, the super user is unable to read any files on the NFS-mounted file system. Why?
A. The NFS protocol does not allow this.
B. The super user has different user IDs on the client and the server machine.
C. The client, when mounting the NFS filesystem, must specify the option trusted.
D. The exports entry on the server machine does not include the option no_root_squash.
Answer: D
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