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[General] Pass Guaranteed Quiz Reliable XK0-005 - Online CompTIA Linux+ Certification Exam

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【General】 Pass Guaranteed Quiz Reliable XK0-005 - Online CompTIA Linux+ Certification Exam

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CompTIA XK0-005 (CompTIA Linux+ Certification) Certification Exam is a globally recognized certification that validates the skills and knowledge required for Linux system administration. CompTIA Linux+ Certification Exam certification is designed to test the candidate's ability to configure, manage, and troubleshoot Linux systems. Individuals who Pass XK0-005 Exam demonstrate their ability to work confidently with Linux systems, including installation, management of user accounts, networking, and security.
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CompTIA Linux+ Certification Exam Sample Questions (Q248-Q253):NEW QUESTION # 248
A systems administrator needs to check if the service systemd-resolved.service is running without any errors. Which of the following commands will show this information?
  • A. systemctl mask systemd-resolved.service
  • B. systemctl show systemd-resolved.service
  • C. systemctl status systemd-resolved.service
  • D. systemctl enable systemd-resolved.service
Answer: C

NEW QUESTION # 249
Users report that they cannot access some files located in the /opt/finapp directory after a power outage caused an unexpected server restart. A Linux administrator examines the following filesystem details and system logs:
# mount | grep finapp
/dev/mapper/rhel-opt_finapp on /opt/finapp type xfs (rw,relatime,seclabel,attr2,inode64,logbufs=8, logbsize=32k,noquota)
# lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sda 8:0 0 931.5G 0 disk
##sda1 8:1 0 1G 0 part /boot
##sda2 8:2 0 930.5G 0 part
##rhel-root 253:0 0 30.5G 0 lvm /
##rhel-opt_finapp 253:1 0 900G 0 lvm /opt/finapp
# grep opt_finapp /var/log/messages
XFS (opt_finapp): Corruption detected in inode 3645, extent tree
Which of the following commands should the administrator run in an attempt to fix the filesystem?
  • A. lvcreate -L900G -n opt_finapp rhel
  • B. xfs_repair /dev/mapper/rhel-opt_finapp
  • C. fsck.ext4 /dev/mapper/rhel-opt_finapp
  • D. fdisk /dev/mapper/rhel-opt_finapp
Answer: B
Explanation:
For repairing XFS filesystems, the appropriate command is xfs_repair. Since the /opt/finapp directory resides on an XFS filesystem (indicated in the mount output), xfs_repair is suitable for diagnosing and fixing corruption in XFS inodes and extent trees. Using fdisk or fsck.ext4 is not appropriate for XFS filesystems, as these commands are intended for partitioning and ext4 filesystems, respectively. Reference: CompTIA Linux+ Study Guide.

NEW QUESTION # 250
A systems administrator wants to permit access temporarily to an application running on port 1234/TCP on a Linux server. Which of the following commands will permit this traffic?
  • A. firewall-cmd -add-whitelist-uid=1234
  • B. firewall-cmd -new-service=1234/tcp
  • C. firewall-cmd -add-port=1234/tcp
  • D. firewall-cmd -service=1234 -protocol=tcp
Answer: C
Explanation:
Explanation
The firewall-cmd command is used to manage firewalld, which is a firewall service for Linux systems that provides dynamic and persistent configuration of firewall rules. Firewalld uses zones and services to define different levels of trust and access for network connections.
To permit access temporarily to an application running on port 1234/TCP on a Linux server, the systems administrator can use the firewall-cmd --add-port=1234/tcp command. This command will add a rule to the default zone (usually public) that allows incoming traffic on port 1234/TCP. The rule will only be effective until the next reload or restart of firewalld. To make the rule permanent, the administrator can add the --permanent option to the command. The statement C is correct.
The statements A, B, and D are incorrect because they do not permit access to port 1234/TCP.
The firewall-cmd --new-service=1234/tcp command does not exist. The firewall-cmd --service=1234
--protocol=tcp command does not work because 1234 is not a predefined service name in firewalld.
The firewall-cmd --add-whitelist-uid=1234 command does not exist. References: [How to Use FirewallD to Manage Firewall in Linux]

NEW QUESTION # 251
Drag and Drop Question
As a Systems Administrator, to reduce disk space, you were tasked to create a shell script that does the following:
Add relevant content to /tmp/script.sh, so that it finds and compresses rotated files in /var/log without recursion.
INSTRUCTIONS
Fill the blanks to build a script that performs the actual compression of rotated log files.
If at any time you would like to bring back the initial state of the simulation, please click the Reset All button.

Answer:
Explanation:


NEW QUESTION # 252
During a security scan, the password of an SSH key file appeared to be too weak and was cracked. Which of the following commands would allow a user to choose a stronger password and set it on the existing SSH key file?
* passwd
  • A. pwgen
  • B. ssh-keygen
  • C. ssh
Answer: A
Explanation:
Explanation
The command that would allow a user to choose a stronger password and set it on the existing SSH key file is ssh-keygen -p -f <keyfile>. This command uses the ssh-keygen tool, which is used to generate, manage, and convert authentication keys for SSH. The -p option stands for passphrase, and it allows the user to change or remove the passphrase of an existing private key file. The -f option specifies the filename of the key file. The command will prompt the user for the old passphrase, and then for the new passphrase twice.
The other options are not correct commands for changing the password of an SSH key file. The passwd command is used to change the password of a user account on a Linux system, not an SSH key file. The ssh command is used to log in to a remote system using SSH, not to change the password of an SSH key file. The pwgen command is used to generate random passwords, not to change the password of an SSH key file.
References: ssh-keygen(1) - Linux manual page; How To: Change Passphrase for SSH Private Key - Unix Tutorial

NEW QUESTION # 253
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