Weekend Sale Limited Time 70% Discount Offer - Ends in 0d 00h 00m 00s - Coupon code: xmas50

Linux Foundation LFCS - Linux Foundation Certified System Administrator

Linux Foundation LFCS Premium Access     Download Demo    
Page: 7 / 8
Total 260 questions

What is true regarding the file ~/.forward?

A.

As it is owned by the MTA and not writable by the user, it must be edited using the editaliases command.

B.

After editing ~/.forward the user must run newaliases to make the mail server aware of the changes.

C.

Using ~/.forward, root may configure any email address whereas all other users may configure only their own addresses.

D.

When configured correctly, ~/.forward can be used to forward each incoming mail to more than one other recipient.

Which file inside the CUPS configuration directory contains the definition of the printers?

A.

cups-devices.conf

B.

snmp.conf

C.

printcap.conf

D.

printers.conf

E.

cupsd.conf

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.

Which of the following commands overwrites the bootloader located on /dev/sda without overwriting the partition table or any data following it?

A.

dd if=/dev/zero of=/dev/sda bs=512

B.

dd if=/dev/zero of=/dev/sdabs=512 count=1

C.

dd if=/dev/zero of=/dev/sda bs=440 count=1

D.

dd if=/dev/zero of=/dev/sda bs=440

Which of the following keywords can be used in the file /etc/nsswitch.conf to specify a source for host name lookups? (Choose TWO correct answers.)

A.

resolv

B.

dns

C.

remote

D.

files

E.

hosts

What is true regarding a default route?

A.

The default route is always used first. When the default route is not available more specific routes are tried.

B.

When a default route is set, all other routes are disabled until the default route is deleted.

C.

The default route is only used if there is not a more specific route to a destination host or network.

D.

Without a default route, no network communication even in directly attached networks is possible.

Which of the following commands should be added to /etc/bash_profile in order to change the language of messages for an internationalized program to Portuguese (pt)?

A.

export LANGUAGE="pt"

B.

export MESSAGE="pt"

C.

export UI_MESSAGES="pt"

D.

export LC_MESSAGES="pt"

E.

export ALL_MESSAGES="pt"

What is the command to delete the default gateway from the system IP routing table? (Choose TWO correct answers.)

A.

route del default

B.

ifconfig unset default

C.

netstat -r default

D.

ip route del default

E.

sysctl ipv4.default_gw=0

Which file contains a set of services and hosts that will be allowed to connect to the server by going through a TCP Wrapper program such as tcpd? (Specify the full name of the file, including path.)https://lh3.googleusercontent.com/-5cd-clmKnbk/AAAAAAAAAAI/AAAAAAAAADM/-SXesH19Ido/s46-c-k-no/photo.jpg

After running the command umount /mnt, the following error message is displayed:

umount: /mnt: device is busy.

What is a common reason for this message?

A.

The kernel has not finished flushing diskwrites to the mounted device.

B.

A user has a file open in the /mnt directory.

C.

Another file system still contains a symlink to a file inside /mnt.

D.

The files in /mnt have been scanned and added to the locate database.

E.

The kernel thinks that a process is about to open a file in /mnt for reading.