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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Services and User Management | 20% | - Service configuration and operation
|
| Topic 2: Troubleshooting | 22% | - System and hardware issues
|
| Topic 3: Security | 18% | - Access control and authentication
|
| Topic 4: System Management | 23% | - Installation, configuration, and maintenance
|
| Topic 5: Automation and Scripting | 17% | - Containers, orchestration, and cloud integration
|
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NEW QUESTION # 71
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?
Answer: D
Explanation:
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.
NEW QUESTION # 72
A systems administrator is creating a now shared directory. Which of the following commands ensures all users from the same group will be able to work with the newly created files?
Answer: A
Explanation:
Setting the setgid bit on a shared directory causes newly created files and subdirectories to inherit the directory's group ownership, allowing members of the same group to collaborate consistently on new files.
NEW QUESTION # 73
A systems administrator is restoring data from a backup. While analyzing the file format, the administrator sees the following output:
data: 7-zip archive data, version 0.4
Which of the following commands should the administrator use to help extract the data?
Answer: C
Explanation:
The output indicates the file is a 7-zip archive, and the 7za command is specifically designed to extract 7-zip formatted archives, making it the appropriate tool to restore the data.
NEW QUESTION # 74
Which of the following is the location for built-in Linux executable files and utilities?
Answer: A
Explanation:
The correct answer is A. /bin because it contains essential user command binaries (executables) that are required for basic system functionality and are available to all users. These include fundamental commands such as ls, cp, mv, cat, and bash, which are necessary for system operation even in single-user mode or during system recovery.
The /bin directory is part of the Filesystem Hierarchy Standard (FHS) and is intended to store critical executable programs that must be accessible at all times, including when other filesystems (such as /usr) may not be mounted. This ensures that core system utilities are always available for administrative and maintenance tasks.
Option B (/var) is incorrect because it stores variable data such as logs, mail, spool files, and temporary files that change frequently. It does not contain executable binaries.
Option C (/etc) is incorrect because it contains system configuration files rather than executable programs.
Files in /etc define how services and system components behave.
Option D (/sys) is incorrect because it is a virtual filesystem that provides an interface to kernel data structures. It is used for interacting with hardware and kernel subsystems, not for storing executable utilities.
From a Linux+ system management perspective, understanding filesystem structure is essential. The /bin directory plays a crucial role in ensuring that essential commands are always accessible, making it a key component of system reliability and administration.
NEW QUESTION # 75
A Linux user runs the following command:
nohup ping comptia.com &
Which of the following commands should the user execute to attach the process to the current terminal?
Answer: D
Explanation:
The fg command brings a background job to the foreground, attaching it to the current terminal.
Since the ping process was started in the background with &, fg is the correct way to reattach it.
NEW QUESTION # 76
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