- (Exam Topic 3)
To prevent a specific user from scheduling tasks with at, what should the administrator do?

1. A. Add the specific user to /etc/at.allow file.
2. B. Add the specific user to [deny] section in the /etc/atd.conf file.
3. C. Add the specific user to /etc/at.deny file.
4. D. Add the specific user to nojobs group.
5. E. Run the following: atd --deny [user].

Correct Answer: C

- (Exam Topic 3)
Which of the following commands can be used to convert text files in one character encoding to another character encoding?

1. A. cat
2. B. convert
3. C. dd
4. D. iconv
5. E. utf2utf

Correct Answer: D

- (Exam Topic 5)
On a regular users workstation the route command takes a long time before printing out the routing table. Which of the following errors does that indicate?

1. A. The local routing information may be corrupted and must be re-validated using a routing protocol.
2. B. One of the routers in the routing table is not available which causes the automatic router failure detection mechanism (ARF-D) to wait for a timeout.
3. C. There may accidentally be more than one default router in which case a default router election has to be done on the network in order to choose one router as the default.
4. D. DNS resolution may not be working as route by default tries to resolve names of routers and destinations and may run into a timeout.

Correct Answer: D

- (Exam Topic 2)
How is a display manager started?

1. A. It is started by a user using the command startx.
2. B. It is started like any other system service by the init system.
3. C. It is started by inetd when a remote hosts connects to the X11 port.
4. D. It is started automatically when a X11 user logs in to the system console.

Correct Answer: B

- (Exam Topic 1)
Which of the following configuration files should be modified to set default shell variables for all users?

1. A. /etc/bashrc
2. B. /etc/profile
3. C. ~/.bash_profile
4. D. /etc/.bashrc

Correct Answer: B