What is true regarding the time in a Linux system?

What is true regarding the time in a Linux system?
A. The BIOS clock of a computer always indicates the current local time and time zone.
B. Each application must convert the Unix time to the current time zone which is usually done by using standard libraries.
C. When the system is on the network, each query for the current time leads to a new network connection to a time server.
D. When the system time changes, running processes must be restarted in order to get the correct time.

Answer: B

Which of the following are commonly used Mail Transfer Agent (MTA) applications? (Choose THREE correct answers.)

Which of the following are commonly used Mail Transfer Agent (MTA) applications? (Choose THREE correct answers.)
A. Postfix
B. Procmail
C. Sendmail
D. Exim
E. SMTPd

Answer: A, C, D

Which of the following errors does that indicate?

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?
A. The local routing information may be corrupted and must be re-validated using a routing protocol.
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.
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.
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.

Answer: D

Please specify the top directory containing the configuration files for the CUPS printing system. (Specify the full path to the directory.)

Please specify the top directory containing the configuration files for the CUPS printing system. (Specify the full path to the directory.)

Answer: /etc/cups, /etc/cups/

Which command is used to add an empty group to the system? (Specify ONLY the command without any path or parameters.)

Which command is used to add an empty group to the system? (Specify ONLY the command without any path or parameters.)

Answer: groupadd, /usr/sbin/groupadd

By default, which file will be queried first for hostname lookups?

Given the following line from /etc/nsswitch.conf:
hosts: files mdns4_minimal [NOTFOUND=return] dns mdns4
By default, which file will be queried first for hostname lookups? (Specify the full name of the file, including path.)

Answer: /etc/hosts

Which of the following commands could be used to determine which process is causing this?

When trying to unmount a device it is reported as being busy.
Which of the following commands could be used to determine which process is causing this?
A. debug
B. lsof
C. nessus
D. strace
E. traceroute

Answer: B