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| Certification Vendor: | CompTIA |
|---|---|
| Exam Name: | CompTIA Linux+ Certification Exam |
| Exam Number: | XK0-006 |
| Related Certifications: | CompTIA Network+ CompTIA Server+ CompTIA A+ |
| Exam Price: | $358 USD |
| Passing Score: | 720 (scale 100–900) |
| Certificate Validity Period: | 3 years |
| Available Languages: | English |
| Real Exam Qty: | Up to 90 |
| Exam Format: | Multiple-choice, Performance-based questions |
| Exam Duration: | 90 minutes |
| Recommended Training: | CompTIA CertMaster Learn CompTIA Official Study Materials |
| Exam Registration: | Pearson VUE Exam Scheduling CompTIA Official Registration |
| 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 |
XK0-006の実際の試験の品質を確保するために、多くの努力をしました。私たちの会社は何百人もの専門家を雇うことに多額のお金を費やし、彼らは作品を書くためにチームを作りました。これらの専門家の資格は非常に高いです。 XK0-006学習ガイドに関する豊富な知識と豊富な経験があります。これらの専門家は、XK0-006の学習資料が公式に全員と面談するまでに多くの時間を費やしました。そして、XK0-006の実際の試験の内容について科学的な取り決めを行いました。優れたXK0-006試験問題でXK0-006試験に合格できます。
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質問 # 18
A Linux administrator is making changes to local files that are part of a Git repository. The administrator needs to retrieve changes from the remote Git repository. Which of the following commands should the administrator use to save the local modifications for later review?
正解：C
解説：
In Git-based workflows, especially those used in DevOps environments, it is common for administrators to have uncommitted local changes while needing to retrieve updates from a remote repository. Linux+ V8 emphasizes understanding how to safely manage local modifications during synchronization operations.
The command git stash is specifically designed for this scenario. It temporarily saves (or "stashes") local changes in a stack-like structure and reverts the working directory to a clean state that matches the current HEAD. This allows the administrator to perform operations such as git pull without conflicts. Later, the stashed changes can be reapplied using git stash apply or git stash pop.
The other options are incorrect. git pull retrieves and merges remote changes but will fail or cause conflicts if local modifications exist. git merge combines branches and does not save uncommitted changes. git fetch downloads remote references but does not address local working directory changes.
Linux+ V8 documentation highlights git stash as a safe and reversible way to protect local work during repository updates. Therefore, the correct answer is A.
質問 # 19
A systems administrator is having issues with a third-party API endpoint. The administrator receives the following output:
Which of the following actions should the administrator take to resolve the issue?
正解：D
解説：
This scenario represents a name resolution failure, which is a common troubleshooting case addressed in CompTIA Linux+ V8. The critical clues are the error messages returned by both curl and dig.
The curl error "Could not resolve host" indicates that the system is unable to translate the hostname into an IP address. This is confirmed by the dig output, which returns NXDOMAIN, meaning the DNS resolver cannot resolve the requested domain name. Importantly, the dig output shows that the query is reaching a DNS server (10.255.255.254), but the resolution fails, strongly pointing to a DNS client configuration issue.
Option C, reviewing and fixing the DNS client configuration file (such as /etc/resolv.conf or systemd-resolved settings), is the correct action. Linux+ V8 documentation highlights DNS misconfiguration as a primary cause of application connectivity issues. Incorrect nameserver entries, unreachable DNS servers, or misconfigured resolvers commonly produce NXDOMAIN responses.
The other options are incorrect. Firewall issues would result in connection timeouts, not DNS resolution failures. Requesting a new API endpoint is unnecessary without first confirming local DNS functionality.
Internet connectivity issues would typically prevent any DNS communication, but here a DNS server is clearly being contacted.
Linux+ V8 stresses a layered troubleshooting approach: verify DNS resolution before investigating network ports or application logic. Therefore, the correct answer is C. Review and fix the DNS client configuration file.
質問 # 20
A systems administrator is developing a script to copy a file if it exists and return an error if it does not. Given the following incomplete script:
Which of the following statements is missing from the script?
正解：C
解説：
An else statement is required to handle the condition when the file does not exist so the script can return the error message instead of attempting the copy operation.
質問 # 21
An administrator receives the following output while attempting to unmount a filesystem:
umount /data1: target is busy.
Which of the following commands should the administrator run next to determine why the filesystem is busy?
正解：A
解説：
The lsof command lists open files and the processes using them. Running lsof | grep /data1 will show which processes are keeping the /data1 filesystem busy, preventing it from being unmounted.
質問 # 22
Which of the following utilities supports the automation of security compliance and vulnerability management?
正解：C
解説：
OpenSCAP is a framework that automates security compliance checking and vulnerability management by using standardized security content (SCAP). It helps administrators enforce policies and detect vulnerabilities.
質問 # 23
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