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| Certification Vendor: | CompTIA |
|---|---|
| Exam Name: | CompTIA Linux+ Certification Exam (XK0-006) |
| Exam Number: | XK0-006 |
| Exam Format: | Multiple-choice questions, Performance-based questions (PBQs) |
| Passing Score: | 720 (on a scale of 100–900) |
| Certificate Validity Period: | 3 years |
| Exam Duration: | 90 minutes |
| Exam Price: | Approximately USD 358 (varies by region) |
| Related Certifications: | CompTIA Network+ CompTIA A+ CompTIA Security+ |
| Available Languages: | English |
| Real Exam Qty: | Maximum 90 |
| Recommended Training: | CompTIA CertMaster Learn (Linux+ XK0-006) CompTIA Official Training Resources |
| Exam Registration: | CompTIA Linux+ Official Certification Page Pearson VUE Exam Registration |
| Sample Questions: | CompTIA XK0-006 Sample Questions |
| Exam Way: | Online (proctored) or onsite testing via Pearson VUE centers |
| Pre Condition: | No mandatory prerequisites, but 12–24 months of Linux administration experience or CompTIA A+ / Network+ knowledge is recommended. |
| Official Syllabus URL: | https://www.comptia.org/certifications/linux |
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NEW QUESTION # 50
A systems administrator is investigating bandwidth issues on a Linux file server that should be able to easily exceed 12.5MBps. The administrator inspects the following information:
Which of the following is causing the bandwidth issue?
Answer: C
Explanation:
The interface has negotiated a speed of 100Mbps, which caps throughput to around 12.5MBps under ideal conditions. If the server should exceed that, the link is negotiating at a lower-than- expected speed (for example, it should be at 1Gbps or higher).
NEW QUESTION # 51
A small group of remote users needs permission to run some administrative commands on a Linux server. Which of the following approaches is the best way to address this request?
Answer: D
Explanation:
The best approach is to follow least privilege by identifying the specific administrative commands the users need and creating sudo rules that allow only those commands with elevated privileges.
NEW QUESTION # 52
An administrator needs to create a new logical volume from sets of provisioned disks. Which of the following shows the correct order of commands the administrator should execute?
Answer: A
Explanation:
Logical Volume Management (LVM) is a fundamental storage management concept in CompTIA Linux+ V8.
LVM provides a layered abstraction between physical storage devices and the filesystems used by the operating system. To successfully provision a new logical volume, an administrator must follow a strict hierarchy of operations:
* pvcreate (Physical Volume): This is the first step. The administrator must initialize the raw physical disks or partitions for use by LVM. This command writes LVM metadata to the disk, making it a " Physical Volume " (PV).
* vgcreate (Volume Group): In the second step, the administrator combines one or more Physical Volumes into a single storage pool called a " Volume Group " (VG). The VG acts like a virtual disk drive created from the combined capacity of the underlying PVs.
* lvcreate (Logical Volume): Finally, the administrator carves out space from the Volume Group to create
" Logical Volumes " (LV). These LVs act like partitions and are where the administrator will actually create a filesystem (e.g., mkfs.ext4) and mount it for use.
This order is mandatory because each layer depends on the existence of the one below it. You cannot create a VG without PVs, and you cannot create an LV without a VG.
Therefore, the sequence pvcreate - > vgcreate - > lvcreate is the verified and only correct order of execution.
NEW QUESTION # 53
A systems administrator is helping to secure a new web application. During the tests, the administrator obtains the following output to validate the application:
SSL connection using TLSv1.2 / ECDHE-RSA-AES256-GCM-SHA384
ALPN, server accepted to use http/1.1
Server certificate:
subject: CN=*.newapp.comptia.org
start date: Jan 17 00:00:00 2024 GMT
expire date: Feb 16 23:59:59 2034 GMT
issuer: C=US; O=Comptia; OU=IT Security; CN=ca1.comptia.org
SSL certificate verify result: unable to get local issuer certificate (20), continuing anyway.
Which of the following explains the validation results?
Answer: C
Explanation:
The correct answer is A. The certificate was not signed by a trusted authority, which was forcefully ignored during the tests. The key indicator in the output is the message: "SSL certificate verify result: unable to get local issuer certificate (20), continuing anyway." This error means that the client system cannot validate the certificate chain because it does not recognize or trust the certificate authority (CA) that issued the server certificate.
In TLS/SSL validation, the client must verify that the server's certificate chains up to a trusted root CA present in the local trust store. If the issuer (in this case, ca1.comptia.org) is not included in the client's trusted certificate authorities, the verification fails. However, the phrase "continuing anyway" indicates that the validation failure was bypassed-likely due to a testing flag such as -k or --insecure in curl-allowing the connection despite the trust issue.
Option B is incorrect because the certificate validity dates show it is valid from 2024 to 2034, not expired.
Option C is incorrect because wildcard certificates (e.g., *.newapp.comptia.org) are commonly used and not inherently insecure when properly managed.
Option D is incorrect because the cipher suite shown (ECDHE-RSA-AES256-GCM-SHA384) is considered strong and modern, not outdated.
From a Linux+ security perspective, proper certificate validation is critical. Administrators should ensure that the issuing CA is trusted by installing the correct CA certificates rather than bypassing validation, which exposes systems to man-in-the-middle attacks and other security risks.
NEW QUESTION # 54
Which of the following best describes journald?
Answer: A
Explanation:
journald, part of systemd, is the core logging service in modern Linux systems and is covered under Linux+ V8 logging and monitoring objectives.
The correct description is A. systemd-journald collects, stores, and indexes logging data from the kernel, system services, and applications. Logs are stored in a structured, binary format and can be queried using journalctl. Journald supports metadata tagging, log filtering, and centralized logging integration.
Option B refers to kernel crash dump mechanisms like kdump. Option C describes filesystem journaling (such as ext4 journaling). Option D refers to auditd, which manages security audit logs.
Linux+ V8 documentation clearly distinguishes journald from other logging and auditing services. Therefore, the correct answer is A.
NEW QUESTION # 55
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