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| Certification Vendor: | CompTIA |
|---|---|
| Exam Name: | CompTIA Linux+ Certification Exam |
| Exam Number: | XK0-006 |
| Exam Price: | USD 348 |
| Certificate Validity Period: | 3 years |
| Related Certifications: | CompTIA Linux+ |
| Exam Duration: | 90 minutes |
| Passing Score: | 720 (on a scale of 100–900) |
| Exam Format: | Performance-based, Multiple-choice |
| Available Languages: | English |
| Real Exam Qty: | Maximum of 90 |
| Sample Questions: | CompTIA XK0-006 Sample Questions |
| Exam Way: | Online (via Pearson VUE) or In-person at Pearson VUE testing centers |
| Pre Condition: | No formal prerequisites; recommended 12 months of hands-on experience with Linux administration |
| Official Syllabus URL: | https://www.comptia.org/en-us/certifications/linux |
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NEW QUESTION # 48
A technician wants to temporarily use a Linux virtual machine as a router for the network segment 10.10.204.0
/24. Which of the following commands should the technician issue? (Select three).
Answer: E,G,H
Explanation:
Comprehensive and Detailed Explanation From Exact Extract:
To temporarily configure a Linux virtual machine as a router, the technician must enable IP forwarding and set up iptables rules to allow and masquerade traffic:
* A. echo "1" > /proc/sys/net/ipv4/ip_forward: Enables IPv4 forwarding in the Linux kernel, allowing the VM to forward packets between interfaces.
* B. iptables -A FORWARD -j ACCEPT: Adds a rule to the iptables firewall to accept all forwarded packets (allows traffic to be routed).
* G. iptables -t nat -s 10.10.204.0/24 -A POSTROUTING -j MASQUERADE: Sets up network address translation (NAT) for outgoing packets from the 10.10.204.0/24 subnet, masquerading them as if they are coming from the VM's external IP.
Other options:
* C. and H. are not relevant for routing/NAT in this context (PREROUTING is generally used for DNAT, not for standard source NAT).
* D. is syntactically incorrect and mixes PREROUTING with MASQUERADE, which is not the proper combination for SNAT.
* E. disables forwarding.
* F. is not related to IP forwarding.
Reference:
CompTIA Linux+ Study Guide: Exam XK0-006, Sybex, Chapter 9: "Networking", Section: "Configuring Linux as a Router" CompTIA Linux+ XK0-006 Objectives: Domain 2.0 - Networking Official CompTIA Linux+ Cert Guide, Chapter 12: "Firewall and NAT configuration"
NEW QUESTION # 49
Which of the following utilities supports the automation of security compliance and vulnerability management?
Answer: D
Explanation:
Security compliance and vulnerability management are critical components of Linux system administration, and CompTIA Linux+ V8 places strong emphasis on automated security assessment tools. OpenSCAP is specifically designed to address these requirements.
OpenSCAP is an open-source framework that implements the Security Content Automation Protocol (SCAP), a set of standards used for automated vulnerability scanning, configuration compliance checking, and security auditing. It allows administrators to assess Linux systems against established security baselines such as CIS benchmarks, DISA STIGs, and organizational security policies. This makes OpenSCAP the most appropriate tool for automating both compliance and vulnerability management.
The other options serve different security-related purposes but do not fulfill the automation requirement.
SELinux is a mandatory access control system that enforces security policies at runtime but does not perform compliance scanning or vulnerability assessments. Nmap is a network scanning and discovery tool used to identify open ports and services, not compliance automation. AIDE (Advanced Intrusion Detection Environment) is a file integrity monitoring tool that detects unauthorized file changes but does not evaluate overall system compliance.
Linux+ V8 documentation highlights OpenSCAP as a tool used to automate security audits, generate compliance reports, and integrate with configuration management workflows. Its ability to standardize security checks across multiple systems makes it essential in enterprise and regulated environments.
Therefore, the correct answer is D. OpenSCAP.
NEW QUESTION # 50
A Linux systems administrator needs to extract the contents of a file named /home/dev/web.bkp to the /var
/www/html/ directory. Which of the following commands should the administrator use?
Answer: C
Explanation:
Comprehensive and Detailed 250 to 350 words of Explanation From Linux+ V8 documents:
File extraction and backup restoration are fundamental System Management tasks covered in CompTIA Linux+ V8. In this scenario, the administrator must extract the contents of an existing backup file into a target directory.
The correct command is option B, which uses cpio in extract mode. The command changes into the destination directory (/var/www/html/) using pushd, extracts the archive contents with cpio -idv, and then returns to the original directory with popd. This ensures that files are restored into the correct location without modifying paths inside the archive.
The cpio utility is commonly used for backups created with cpio -o and supports reading archive data from standard input. Linux+ V8 documentation includes cpio as a valid and supported archive format for backup and restore operations.
The other options are incorrect. Option A incorrectly assumes the backup is a gzip-compressed tar archive.
Option C creates a new archive instead of extracting one. Option D assumes the file is a ZIP archive, which is not indicated by the .bkp extension.
Linux+ V8 emphasizes using the correct tool based on the archive format and restoring files into the intended directory. Therefore, the correct answer is B.
NEW QUESTION # 51
A Linux administrator prepares a backup script named testBack.sh. The backup script must be executed at 3:00 p.m. every Sunday. Which of the following crontabconfigurations will satisfy this requirement?
Answer: C
Explanation:
This cron entry schedules the script to run at minute zero of hour fifteen every Sunday, which corresponds to 3:00 p.m. each week.
NEW QUESTION # 52
A systems administrator receives reports about connection issues to a secure web server. Given the following firewall and web server outputs:
Which of the following commands best resolves this issue?
Answer: B
Explanation:
The firewall output shows that port 443/tcp (HTTPS) is explicitly denied, even though the web server is correctly listening on it. Removing the deny rule for HTTPS (ufw delete deny https/tcp) resolves the issue while still keeping the firewall active and secure.
NEW QUESTION # 53
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