Question 1

A network client has an ethernet interface (eth0) configured with an IP address in the

subnet 192.168.0.0/24. This subnet has a router, with the IP address 192.168.0.1, that

connects this subnet to the Internet. What needs to be done on the client to enable it to use

the router as its default gateway? (Choose TWO correct answers.)

Options :

A : route add default gw 192.168.0.1 eth0

B : ifconfig eth0 defaultroute 192.168.0.1

C : ip route add default via 192.168.0.1 dev eth0

D : echo defaultroute 192.168.0.1 >> /etc/resolv.conf

E : route add defaultgw=192.168.0.1 if=eth0

Answer: A,C

Question 2

What should be done to ensure a client machine uses the recursive nameserver running on

the IP address 192.168.0.1? (Choose TWO correct answers.)

Options :

A : Add nameserver 192.168.0.1 to /etc/resolv.conf.

B : Run route add nameserver 192.168.0.1.

C :

Run ifconfig eth0 nameserver 192.168.0.1.

D : Ensure that the dns service is listed in the hosts entry in the /etc/nsswitch.conf file.

E : Run bind add nameserver 192.168.0.1.

Answer: A,D

Question 3

Which files are updated as devices are mounted and unmounted to provide information on

the currently mounted devices and the options used? (Choose TWO correct answers.)

Options :

A : /proc/dtab

B : /etc/mtab

C : /etc/fstab

D : /proc/mounts

E : /proc/devices

Answer: C

Question 4

Which single command will simulate a failed device within a RAID 5 array?

Options :

A : mdadm --remove /dev/md0 /dev/sdd1

B : mdadm --zero-superblock /dev/sdf3

C : mdadm --force-fault /dev/md2 /dev/sde2

D : mdadm --fail /dev/md0 /dev/sdc1

E : mdadm /dev/md0 --offline /dev/sdc1

Answer: D

Question 5

What happens if the Linux kernel can't mount the root filesystem when booting?

Options :

A : An error message is shown and the administrator is asked by the kernel to specify a valid root filesystem to continue the boot process.

B : An error message is shown and the system reboots after a keypress.

C : An error message is shown and the system boots in maintenance mode.

D : An error message is shown showing which device couldn't be mounted or informing that init couldn't be found.

E : An error message is shown stating that the corresponding kernel module couldn't be loaded.

Answer: D

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