Online Questions – Valid Practice SCA_SLES15 Exam Dumps Test Questions [Q21-Q45]

SCA_SLES15 SUSE

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Online Questions – Valid Practice SCA_SLES15 Exam Dumps Test Questions

100% Real SCA_SLES15 dumps – Brilliant SCA_SLES15 Exam Questions PDF

SUSE Certified Administrator in Enterprise Linux 15 (050-754) exam, also known as SCA_SLES15, is designed to test the knowledge and skills of IT professionals who work with SUSE Enterprise Linux 15. SCA_SLES15 exam is intended for system administrators, system engineers, and other IT professionals who are responsible for installing, configuring, and managing SUSE Enterprise Linux 15 systems in an enterprise environment. The SCA_SLES15 exam covers a range of topics, including system installation and configuration, system maintenance and updates, user and group management, file systems and storage, networking, security, and troubleshooting.

NEW QUESTION 21
What command would be used to add new physical volumes to an existing volume group?

vgextend

vSadd

pvmodify

pvadd

pvextend

vgmodify

To add additional physical volumes to an existing volume group, use the vgextend command. The vgextend command increases a volume group’s capacity by adding one or more free physical volumes.
https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/4/html/cluster_logical_volume_manager/vg_grow#:~:text=To%20add%20additional%20physical%20volumes,or%20more%20free%20physical%20volumes.

NEW QUESTION 22
Which statements regarding subvolumes in a BtrFS filesystem are true (Choose two)

Every subvolume on a BtrFS filesystem must have the same quota if quotas are implemented.

Even though subvolumes in BtrFS appear to be subdirectories, subvolumes can be mounted separately.
The -o sub=

Every subvolume on a BtrFS fiLesystem must have a name that begins with the “@” character.

Multiple virtual filesystems can be created inside the BtrFS filesystem.

NEW QUESTION 23
Which directory is traditionally used as a catch all to mount local and/or remote file systems?

/mnt

/etc

/home

/var

/tmP

NEW QUESTION 24
What does the (x) permission on a directory mean?

Nothing – the execute permission cannot be assigned to a directory.

The export permission on a directory means that directory can be mounted by a remote server.

The exclude permission on a directory means that the directory will not be displayed by the Is command.

The execute permission on a directory means you can use the cd command to change into the directory.

The exclude permission on a directory means that the files in the directory are hidden.

The examine permission on a directory means that you can see the directory’s contents.

NEW QUESTION 25
Select the valid device types. (Choose two)

Pipe

null

Redirect

udev

Network

Character

Block

Explanation
The valid device types are character and block devices. Character devices are devices that transfer data byte by byte, such as keyboards, mice, terminals, etc. Block devices are devices that transfer data in fixed-size blocks, such as disks, CD-ROMs, etc. Pipe, null, redirect, udev, and network are not device types but rather concepts or components related to devices or device management.
References:https://documentation.suse.com/sles/15-SP3/html/SLES-all/sec-devices.html

NEW QUESTION 26
What is required to access updates for SLE?

Software Subscription

Nothing

Account Registration

An account with SUSE Customer Center

An account with SUSE Customer Center and a SLE Product Key

NEW QUESTION 27
When using the nice command, which of the following is the higher priority, -15 or 7?

-15

Neither since the values are not within the acceptable range.

It depends on the system priority set by the scheduler when the task was launched.

Explanation
When using the nice command, -15 is the higher priority than 7. The nice command can be used to run a process with a modified scheduling priority. The priority value ranges from -20 (highest priority) to 19 (lowest priority). The default priority is 0. Only root can assign negative priority values to processes.
References:https://documentation.suse.com/sles/15-SP3/html/SLES-all/sec-cli-nice.html

NEW QUESTION 28
What are the three permissions available on posix file systems? (Choose three)

Read

Sharable

Edit

Change

User

All

Write

Execute

Explanation
https://documentation.suse.com/sles/12-SP4/html/SLES-all/cha-security-acls.html The three permissions available on posix file systems are read, write, and execute. The read permission allows the user to view the contents of a file or directory. The write permission allows the user to modify or delete a file or directory. The execute permission allows the user to run a file as a program or change into a directory.
References:https://documentation.suse.com/sles/15-SP3/html/SLES-all/sec-file-permissions.html#sec-file-permis

NEW QUESTION 29
You’re setting up a SUES 15 server which will require very large data volumes and journaling capabilities. Which file system listed below would be the best choice for your data volumes?

VFAT

XFS

Ext2

ReiserFS

Ext3

NEW QUESTION 30
Which statements about log file rotation are true? (Choose two)

Configuration files in the /etc/logrotate.d/ directory can override settings in /etc/logrotate.conf.

The /etc/logrotate.conf file controls which log files will be compressed or deleted based on some regular interval or when the log file reaches a particular size.

The /etc/cron.daily/logrotate file controls which log files will be compressed or deleted based on some regular interval or when the log file reaches a particular size.

Configuration files in the /etc/logrotate.d/ directory can override settings in /etc/cron.daily/logrotate.

The /usr/sbin/logrotate program is used to create and configure settings in the /etc/logrotate.conf file.

NEW QUESTION 31
You are working at a terminal window of a server at the office, but you want to continue this work by remotely accessing the terminal session from your home office. Which command will you need to use to accomplish this?

screen

-tty-release

Ctrl-fa, r

bg -term disconnect

Explanation
The screen command will allow you to create and manage multiple terminal sessions that can be detached and resumed later. You can use the screen command to start a new session, then detach it with Ctrl-a d, and reattach it from another location with screen -r.
References:https://documentation.suse.com/sles/15-SP3/html/SLES-all/cha-screen.html

NEW QUESTION 32
Which process ID is assigned to systemd?

it is the only process with no system ID.

1001

The program systemd is the process with process ID 1. It is responsible for initializing the system in the required way. systemd is started directly by the kernel and resists signal 9, which normally terminates processes. All other programs are either started directly by systemd or by one of its child processes.
https://documentation.suse.com/sles/15-GA/html/SLES-all/cha-systemd.html

NEW QUESTION 33
If the file1.txt file already exists in your home directory, what will the touch -7file1.txt command do if anything?

This command displays a message that file1.txt is a normal file.

This changes the access and modification times of the existing file1.txt file.

This will delete the existing file1.txt file and create a new zero byte file using the same name.

This generates an error since file1.txt already exists.

This causes any additional data to be appended to the existing file1.txt file.

This command displays a message that file1.txt is a normal file and displays the size of the file.

NEW QUESTION 34
You have just added a new directory to be exported via NFS. what command should you run next to make that directory available?

/usr/sbin/rpc.mountd -restart

/bin/nfsd – reload

/etcyinit.d/nfsd -reload

systemctl restart nfsserver.service

systmd -reload nfsserver.target

Explanation
You have just added a new directory to be exported via NFS. To make that directory available, you should run systemctl restart nfsserver.service. This command will restart the NFS server service and reload the
/etc/exports file that contains the export definitions. References:
https://documentation.suse.com/sles/15-SP3/html/SLES-all/sec-nfs-server.html#sec-nfs-server-export

NEW QUESTION 35
Which command gives you a real-time view of the processes running on your system by giving you a continuously updated list?

procupdate

pstree

Is-la

ps -x

top

showproc

NEW QUESTION 36
Which Vim command will save the current file without exiting?

w-no-exit

wq!

Save a File in Vim / Vi #
The command to save a file in Vim is :w.
To save the file without exiting the editor, switch back to normal mode by pressing Esc, type :w and hit Enter.
https://linuxize.com/post/how-to-save-file-in-vim-quit-editor/

NEW QUESTION 37
You have just added a new directory to be exported via NFS. what command should you run next to make that directory available?

/usr/sbin/rpc.mountd -restart

/bin/nfsd – reload

/etcyinit.d/nfsd -reload

systemctl restart nfsserver.service

systmd -reload nfsserver.target

NEW QUESTION 38
You want to restrict access to your server via SSH to just a few specific users. What will you need to do to accomplish this?

Modify the Authorized option in the /etc/ssh/sshd_config file.

Modify the Permitted option in the ~/.ssh/sshd_config file

Modify the Permitted option is the Assh/sshd_configfile.

Modify the AllowUsers option in the /etc/ssh/sshd_config file.

Modify the Authorized option in the /var/ssh/config file.

Explanation
To restrict access to your server via SSH to just a few specific users, you need to modify the AllowUsers option in the /etc/ssh/sshd_config file. This option specifies a list of user names or patterns that are allowed to log in via SSH. Any user name that does not match the list will be denied access. You need to restart the sshd service for the changes to take effect.
References:https://documentation.suse.com/sles/15-SP3/html/SLES-all/sec-ssh-server.html#sec-ssh-server-confi

NEW QUESTION 39
Which command is used to manage software RAID?

mdadm

yast swraid

raidadm

fdisk –raid

mdmgr

NEW QUESTION 40
Which statement is true regarding VFS?

VFS is a set of ANs designed for BtrFS to provide portability.

VFS is a high-performance journaling file system format used by default by YaST and parted.

VFS is an abstraction layer in the kernel that provides the same interface to applications and the user, regardless of which file system format is used.

VFS is a translation layer to allow applications written for ext2 and ReiserFS to run on ext4 file systems.

VFS is a translation layer to allow applications to run on mobile platforms.

Explanation
The statement that is true regarding VFS is that VFS is an abstraction layer in the kernel that provides the same interface to applications and users regardless of which file system format is used. VFS stands for Virtual File System or Virtual File System Switch. It allows different types of file systems (such as ext4, xfs, nfs, etc.) to be accessed through a common set of system calls and functions. VFS also provides caching and buffering mechanisms to improveperformance and reliability. References:
https://documentation.suse.com/sles/15-SP3/html/SLES-all/sec-vfs.html

NEW QUESTION 41
Which commands and options will display the routing table? (Choose two)

cat /etc/sysconfig/routes

ip route show

ip r s

showroute -a

ipconfig -rd

Explanation
https://www.suse.com/support/kb/doc/?id=000016843

NEW QUESTION 42
Which file contains the ntp configuration?

etc/ntp.cfg

/etc/ntp.conf

/srv/ntp/ntp.conf

/etc/sysconfig/ntp.conf

Explanation
The file that contains the ntp configuration is /etc/ntp.conf. This file specifies the ntp server or peer addresses, synchronization options, access restrictions, logging settings, and other parameters for the ntp daemon (ntpd) that provides time synchronization services on a Linux system.
References:https://documentation.suse.com/sles/15-SP3/html/SLES-all/sec-ntp-config.html

NEW QUESTION 43
You want ensure an ext3 filesystem is checked every 50 times it is mounted. Which command would you use?

dumpe2fs

mkfs

fdisk -o

tune2fs

Explanation
The command that is used to ensure an ext3 file system is checked every 50 times it is mounted is tune2fs. The tune2fs command can be used to adjust various parameters of an ext2, ext3, or ext4 file system. The -c option can be used to set the maximum number of mounts between two file system checks. For example, tune2fs -c
50 /dev/sda1 will set the check interval to 50 mounts for /dev/sda1.
References:https://documentation.suse.com/sles/15-SP3/html/SLES-all/sec-tune2fs.html

NEW QUESTION 44
Which type of files are used for inter-process communications? (Choose two)

Array

Pipe

udev

Redirect

Block

Character

Socket

Explanation
The types of files that are used for inter-process communications are pipe and socket files. Pipe files are used for unidirectional data flow between two processes. They can be created with the mkfifo command or with the
| operator in a shell command. Socket files are used for bidirectional data exchange between processes on the same or different machines. They can be created with various system calls or commands depending on the protocol and domain. References:
https://documentation.suse.com/sles/15-SP3/html/SLES-all/sec-cli-pipes.htmlhttps://documentation.suse.com/sle

NEW QUESTION 45
Which commands can be used to terminate processes? (Choose two)

Kill

psterm

ps-k

terminate

kilLall

Explanation
The commands that can be used to terminate processes are kill and killall. The kill command can be used to send a signal to a process specified by its process ID (PID). The default signal is SIGTERM, which requests a graceful termination of the process. The killall command can be used to send a signal to one or more processes specified by their name. It will match all processes that belong to the current user unless otherwise specified.
References:https://documentation.suse.com/sles/15-SP3/html/SLES-all/sec-cli-processes.html#sec-cli-processes-

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