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| Certification Vendor: | CompTIA |
|---|---|
| Exam Name: | CompTIA Linux+ Certification Exam |
| Exam Number: | XK0-006 |
| Certificate Validity Period: | 3 years |
| Passing Score: | 720 (scale 100–900) |
| Exam Duration: | 90 minutes |
| Exam Price: | $358 USD |
| Available Languages: | English |
| Related Certifications: | CompTIA A+ CompTIA Server+ CompTIA Network+ |
| Real Exam Qty: | Up to 90 |
| Exam Format: | Multiple-choice, Performance-based questions |
| Recommended Training: | CompTIA CertMaster Learn CompTIA Official Study Materials |
| 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 # 154
A Linux user needs to authenticate to a Windows Active Directory domain. Which of the following configuration files contains the domain configuration details?
Answer: B
Explanation:
In modern Linux enterprise environments, integrating with Windows Active Directory (AD) is a common requirement for centralized identity management. According to CompTIA Linux+ V8, the System Security Services Daemon (SSSD) is the recommended way to handle authentication and authorization against remote providers like AD or LDAP.
The sssd.conf file (typically located in /etc/sssd/) is the primary configuration file for this service. It contains the essential "domain configuration details," including:
The AD domain name.
The authentication provider (e.g., id_provider = ad).
The URI of the domain controllers.
Caching settings for offline login.
SSSD provides a unified interface that manages the communication between the Linux system and the AD domain, simplifying the authentication stack.
NEW QUESTION # 155
A Linux administrator attempts to log in to a server over SSH as root and receives the following error message: Permission denied, please try again. The administrator is able to log in to the console of the server directly with root and confirms the password is correct. The administrator reviews the configuration of the SSH service and gets the following output:
Based on the above output, which of the following will most likely allow the administrator to log in over SSH to the server?
Answer: C
Explanation:
The SSH configuration option PermitRootLogin prohibit-password prevents the root user from logging in with password authentication. This setting means root cannot use a password to log in via SSH; only key-based authentication is permitted for root. The administrator can still log in as root locally, which is not affected by this SSH configuration. To allow SSH access as root, the administrator must use an SSH key instead of a password.
NEW QUESTION # 156
In the echo "profile-$num-$name" line of a shell script, the variable $num seems to not be expanding during execution. Which of the following notations ensures the value is expanded?
Answer: A
Explanation:
Shell variable expansion is a fundamental scripting concept included in Linux+ V8 objectives. In Bash and similar shells, variables are expanded only when they are interpreted within double quotes or unquoted contexts, and sometimes explicit syntax is required to avoid ambiguity.
The correct notation is ${num}, as shown in option D. Using curly braces around the variable name ensures the shell correctly identifies the variable boundary, especially when it is adjacent to other characters. This guarantees proper expansion of the variable's value.
The other options are incorrect. Single quotes prevent variable expansion entirely. The $(...) syntax is used for command substitution, not variable expansion. Quoting the variable name itself also prevents expansion.
Linux+ V8 documentation emphasizes ${VAR} notation as a best practice in shell scripting for clarity and correctness. Therefore, the correct answer is D.
NEW QUESTION # 157
A newly hired Linux administrator needs to grant access to the Linux servers by generating a password-protected RSA key of 4096 bytes. Which of the following commands will accomplish this task?
Answer: D
Explanation:
The ssh-keygencommand is used to generate SSH key pairs. To generate an RSA key with a length of 4096 bits, the correct syntax is:
-t rsa: Specifies the type of key to generate, which is RSA.
-b 4096: Specifies the number of bits for the key, in this case 4096.
By running this command, the user will be prompted to enter a passphrase to password-protect the key, which satisfies the requirement for generating a password-protected RSA key of 4096 bits.
NEW QUESTION # 158
A Linux software developer wants to use AI to optimize source code used in a commercial product. Which of the following steps should the developer take first?
Answer: D
Explanation:
Linux+ V8 emphasizes security, compliance, and governance when introducing new automation technologies, including AI. Before using AI tools to optimize commercial source code, the developer must ensure that such usage complies with organizational policies.
Option B is correct because verifying company policy is the first and most critical step. AI tools may introduce risks such as intellectual property leakage, licensing conflicts, or regulatory violations. Many organizations restrict how source code can be shared with external systems, including AI services.
The other options are premature. Selecting tools or deploying models should only occur after policy approval.
Linux+ V8 highlights governance-first approaches when adopting automation technologies.
Therefore, the correct answer is B.
NEW QUESTION # 159
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