Question 1

When you connect to an ssh server with your ssh client, the pubic key of the server is compared to the keys stored in a file on the client computer. Which file is this?
A) ~/.ssh/known_hosts
B) ~/.ssh/id_rsa.pub
C) ~/.ssh/authorized_keys
D) ~/.ssh/id_dsa.pub

Accepted Answer

The file `~/.ssh/known_hosts` on the client computer stores the public keys of SSH servers that the client has connected to previously. When connecting to an SSH server, the server's public key is compared against this file to verify the server's identity.

Question 2

You do not want to see any error messages when using the find command; you want to see only the results. Which command accomplishes this task?
A) find /etc -name "*conf" 3>/dev/null
B) find /etc -name "*conf" 0>/dev/null
C) find /etc -name "*conf" 2>/dev/null
D) find /etc -name "*conf" 1>/dev/null

Accepted Answer

The answer of You do not want to see any...

Question 3

What commands can be used to view processes? (Choose three.)
A) ps
B) top
C) tree
D) procview
E) pstree
F) less
G) pr
H) nice
I) sysinfo

Accepted Answer

ps, top, and pstree are all commands that can be used to view processes.

Question 4

To which process does the process ID 1 always belong on SLES12?
A) boot
B) kernel (vmlinuz)
C) init
D) systemd
E) X server
F) cron

Accepted Answer

On SLES12, the process ID 1 belongs to 'systemd', which is the init system responsible for initializing the system and managing services.

Question 5

What is the "users" option in /etc/fstab used for?
A) It specifies the partitions that are not bootable by a user.
B) It allows any user to mount and unmount a partition.
C) It specifies the partitions that are bootable by a user.
D) A normal user is not allowed to access this partition.

Accepted Answer

The "users" option in /etc/fstab allows any user to mount and unmount the specified partition.

Question 6

Which statement about the Set User ID bit on executable files is correct?
A) The SUID should only be set when really needed and only on applications that are well tested.
B) The SUID bit has no security implications.
C) The SUID bit makes it more difficult to exploit any potential vulnerabilities in the program.
D) The SUID bit on executables has no effect; it is only relevant when set on directories.

Accepted Answer

The SUID (Set User ID) bit allows users to execute a file with the permissions of the file owner. It should be used cautiously and only on well-tested applications, as it can pose security risks if the application has vulnerabilities.

Question 7

What command displays hardware information?
A) info
B) hardwarechk
C) hwcheck
D) hwinfo
E) sysinfo

Accepted Answer

The "hwinfo" command is used to display detailed information about the hardware components of a system.

Question 8

Routes to the directly connected network are automatically set up when o device is started. All other routes ore saved in which configuration file?
A) /etc/route
B) /etc/routes
C) /etc/sysconfig/routes
D) /etc/routes.conf
E) /etc/sysconfig/network/routes
F) /etc/network/routes

Accepted Answer

The configuration file for static routes in many Linux distributions is typically located at /etc/sysconfig/network/routes.

Question 9

What is the file /etc/grub.d/10_linux doing?
A) It identifies Linux kernels on the root device and creates relevant menu entries
B) It sets Linux related environmental variables.
C) Maps BIOS drives and Linux devices.
D) Loads a Linux kernel and initramfs

Accepted Answer

The file /etc/grub.d/10_linux is a script used by GRUB to identify Linux kernels on the root device and create the appropriate menu entries for them in the GRUB boot menu.

Question 10

How large is the MBR?
A) 8 KBytes
B) 1 KByte
C) 1 MByte
D) 512 Bytes
E) 256 Bytes

Accepted Answer

The Master Boot Record (MBR) is 512 bytes in size.

Question 11

What is the Multiple Device RAID configuration file?
A) /etc/md.conf
B) /etc/raid.conf
C) /etc/mdadm.conf
D) /etc/raid/md.conf

Accepted Answer

The correct configuration file for managing software RAID arrays in Linux using mdadm is /etc/mdadm.conf.

Question 12

You have a /tmp/data directory containing the files file, file1, and file2. You want to delete the directory and its content. In a terminal window, which command accomplishes this?
A) rm -r /tmp/data/
B) deldir /tmp/data/
C) rmdir /tmp/data/
D) rm /tmp/data/

Accepted Answer

The `rm -r /tmp/data/` command recursively removes the directory and its contents, which is necessary since the directory is not empty.

Question 13

What does SLED stand for?
A) SUSE Linux Enterprise Development
B) SUSE Linux Enterprise Desktop
C) SUSE Linux Enterprise Drive
D) SUSE Linux Enterprise Distribution

Accepted Answer

SLED stands for SUSE Linux Enterprise Desktop, which is a Linux distribution targeted at business and professional users.

Question 14

What does the command lvscan do?
A) Displays RAID disks
B) Displays LVM logical volumes
C) Displays status of KVM virtual machines
D) Displays memory usage of the kernel

Accepted Answer

Displays LVM logical volumes

Question 15

You want to view the status (locked, valid password, etc.) of the account tux. Which command displays the desired information?
A) passwd -S tux
B) passwd -v tux
C) passwd -L tux
D) passwd -p tux

Accepted Answer

The command `passwd -S tux` displays the status of the account, including whether it is locked or has a valid password.

Question 16

What does the following command do? tar -tzvf /tmp/backup.tgz etc/HOSTNAME
A) it includes the etc/HOSTNAME file in the /tmp/backup.tgz archive.
B) it extracts the etc/HOSTNAME file from the /tmp/backup.tgz archive.
C) it displays a line similar to the following, but otherwise does nothing: -rw-r--r--- riit/root 23 2005-03-11 14:20 etc/HOSTNAME
D) it produces an error message because the options are in the wrong sequence.

Accepted Answer

The answer of What does the following command do? tar...

Question 17

You want to use the ip command to set a new address for your network device eth0. It is a Standard class C network. The broadcast address and network route should be set accordingly. Which command is correct?
A) ip address add 192.168.0.10/24 dev eth0
B) ip addr add eth0 192.168.0.10/24 eth0 broadcast 192.168.255.255
C) ip addr add 192.168.0.10/24 dev eth0 brd è
D) ip address set 192.168.0.10/24 dev eth0

Accepted Answer

The correct command is "ip address add 192.168.0.10/24 dev eth0". This command will set the IP address of the eth0 network device to 192.168.0.10, and the network mask to 24 bits. The broadcast address and network route will be set accordingly.

Question 18

What is described as follows: If content of a block changes, the changed block is put beside the non-changed block.
A) Rollback
B) Journaling
C) Subvolume
D) Copy on write

Accepted Answer

Copy on write is a technique where if a block of data is modified, the new data is written to a new block, leaving the original block unchanged.

Question 19

What systemd command switches to a single user system without network?
A) systemctl isolate rescue.target
B) systemctl isolate emergency.target
C) systemctl switch single-user.target
D) systemctl --runlevel=1
E) systemctl set-default minimal.target

Accepted Answer

The command "systemctl isolate rescue.target" switches the system to a single-user mode with minimal services and no network, which is often used for maintenance tasks.

Question 20

Which statements about the LVM components are correct? (Choose two.)
A) Logical volumes are grouped in a master group.
B) A volume group always consists of one physical volume.
C) A volume group can be reduced in size by removing physical volumes.
D) The operating system accesses the volume groups like conventional physical partitions.
E) A volume group is part of a logical volume.
F) A physical volume can be a partition or an entire hard disk.

Accepted Answer

D) The operating system accesses the volume groups like conventional physical partitions.F) A physical volume can be a partition or an entire hard disk.

Exam 3: SUSE Certified Linux Administrator 12

When you connect to an ssh server with your ssh client, the pubic key of the server is compared to the keys stored in a file on the client computer. Which file is this?

You do not want to see any error messages when using the find command; you want to see only the results. Which command accomplishes this task?

What commands can be used to view processes? (Choose three.)

To which process does the process ID 1 always belong on SLES12?

What is the "users" option in /etc/fstab used for?

Which statement about the Set User ID bit on executable files is correct?

What command displays hardware information?

Routes to the directly connected network are automatically set up when o device is started. All other routes ore saved in which configuration file?

What is the file /etc/grub.d/10_linux doing?

How large is the MBR?

What is the Multiple Device RAID configuration file?

You have a /tmp/data directory containing the files file, file1, and file2. You want to delete the directory and its content. In a terminal window, which command accomplishes this?

What does SLED stand for?

What does the command lvscan do?

You want to view the status (locked, valid password, etc.) of the account tux. Which command displays the desired information?

What does the following command do? tar -tzvf /tmp/backup.tgz etc/HOSTNAME

You want to use the ip command to set a new address for your network device eth0. It is a Standard class C network. The broadcast address and network route should be set accordingly. Which command is correct?

What is described as follows: If content of a block changes, the changed block is put beside the non-changed block.

What systemd command switches to a single user system without network?

Which statements about the LVM components are correct? (Choose two.)