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| Certification Vendor: | CompTIA |
|---|---|
| Exam Name: | CompTIA Linux+ Certification Exam |
| Exam Number: | XK0-006 |
| Passing Score: | 720 (scale 100β900) |
| Certificate Validity Period: | 3 years |
| Exam Format: | Multiple-choice, Performance-based questions |
| Real Exam Qty: | Up to 90 |
| Exam Duration: | 90 minutes |
| Exam Price: | $358 USD |
| Available Languages: | English |
| Related Certifications: | CompTIA Server+ CompTIA Network+ CompTIA A+ |
| Recommended Training: | CompTIA Official Study Materials CompTIA CertMaster Learn |
| Exam Registration: | CompTIA Official Registration Pearson VUE Exam Scheduling |
| Sample Questions: | CompTIA XK0-006 Sample Questions |
| Exam Way: | Online proctored or onsite at Pearson VUE testing centers |
| Pre Condition: | No mandatory prerequisites; 12 months of hands-on Linux experience or CompTIA A+/Network+/Server+ recommended |
| Official Syllabus URL: | https://www.comptia.org/certifications/linux |
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NEW QUESTION # 133
Which of the following commands should an administrator use to convert a KVM disk file to a different format?
Answer: B
Explanation:
The qemu-img command is used to create, convert, and manage disk image files for KVM/QEMU. It allows conversion between formats such as qcow2, raw, and vmdk.
NEW QUESTION # 134
A systems administrator receives reports from users who are having issues while trying to modify newly created files in a shared directory. The administrator sees the following outputs:
Which of the following provides the best resolution to this issue?
Answer: A
Explanation:
This scenario involves shared directory collaboration, which is a common system management task covered in the CompTIA Linux+ V8 objectives. The key issue is that users can create files in the shared directory, but other users in the same group cannot modify those files. This behavior is directly related to group ownership inheritance.
By default, when a user creates a file or directory, it is owned by the user and assigned the user's primary group, not necessarily the group of the parent directory. As shown in the output, files inside /share are owned by different groups (student, student2, student3), which prevents other group members from modifying them, even though the parent directory is group-writable.
The correct solution is to set the setgid (set group ID) bit on the shared directory, making option D correct.
When the setgid bit is applied to a directory, all newly created files and subdirectories inherit the group ownership of the parent directory, rather than the creator's primary group. This ensures consistent group ownership and allows all members of the shared group to collaborate effectively.
The other options are incorrect or poor practice. Option A (setuid) is intended for executables, not directories.
Option B requires constant manual intervention and does not scale. Option C weakens security by granting write access to all users, violating the principle of least privilege.
Linux+ V8 documentation explicitly recommends using the setgid bit on shared directories to manage collaborative access securely and efficiently.
NEW QUESTION # 135
A Linux administrator is creating a symbolic link /home/docsleading to the
/usr/share/documents/directory. Which of the following commands allows the administrator to achieve this goal?
Answer: D
Explanation:
This command creates a symbolic link at the specified path that points to the target directory, allowing access to the target through the new link location.
NEW QUESTION # 136
A Linux administrator attempts to unmount the local filesystem /data in order to mount a new volume.
However, the administrator receives the following error message:
umount: /data: target is busy
Which of the following commands should the administrator run to resolve the issue?
Answer: A
Explanation:
The correct answer is D. fuser -mk /data because it directly addresses the issue of a "busy" mount point by identifying and terminating processes that are currently using the filesystem. The error "target is busy" occurs when one or more processes are actively accessing files or directories within the mounted filesystem, preventing it from being safely unmounted.
The fuser command is specifically designed to identify processes that are using files, directories, or sockets.
When used with the -m option, it checks all processes accessing the specified mount point. The -k option sends a signal (by default SIGKILL) to terminate those processes. This frees the filesystem, allowing the administrator to successfully run the umount command afterward.
Option A (tree -g /data) is incorrect because it only displays the directory structure and permissions; it does not identify or stop processes using the filesystem.
Option B (ls -ld /data) is incorrect because it shows directory metadata such as permissions and ownership, not active usage.
Option C (stat -f /data) is incorrect because it provides filesystem statistics but does not help identify or resolve active process locks.
From a Linux+ troubleshooting perspective, tools like fuser and lsof are essential for diagnosing resource contention issues. Properly resolving "busy" mount points ensures data integrity and prevents corruption when unmounting filesystems, making this a critical administrative skill.
NEW QUESTION # 137
System users are being randomly disconnected from a server. The systems administrator inspects the following output:
Which of the following should the administrator do to fix the issue?
Answer: B
Explanation:
The interface shows a very high number of RX and TX errors while the route and gateway are present and the MTU is standard. This points to a physical or hardware problem with the network interface, so replacing the NIC is the best corrective action.
NEW QUESTION # 138
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