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Get All CompTIA Linux+ Certification Exam Questions with Validated Answers
Vendor: | CompTIA |
---|---|
Exam Code: | XK0-005 |
Exam Name: | CompTIA Linux+ Certification Exam |
Exam Questions: | 396 |
Last Updated: | April 18, 2025 |
Related Certifications: | CompTIA Linux+ |
Exam Tags: | Linux certifications Intermediate Level Junior Linux system administratorsLinux Cloud Engineers |
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A Linux administrator needs to run a web application on a server that requires the use of a desktop web browser to enter the final configuration information. The administrator determines the server is running in multi-user mode. The administrator verifies that a web browser is installed on the server and that it has a display manager installed. Which of the following commands will best allow the administrator to temporarily use the web browser on the server?
The systemctl isolate graphical.target command switches the system to graphical mode (runlevel 5). This will start the display manager and allow the administrator to use a graphical environment, including a web browser. The switch is temporary, and the system will revert to multi-user mode after reboot unless explicitly changed.
The journald entries have filled a Linux machine's /var volume. Which of the following is the best command for a systems administrator to use to free up the disk space occupied by these entries?
systemctl stop systemd-journald systemctl start systemd-journald is the best approach among the given options. Stopping and starting the systemd-journald service can help in managing the disk space used by journal logs without manually deleting log files or using more aggressive cleanup methods. This method ensures that log management is handled gracefully by the system's own services.
A systems administrator is investigating why one of the servers has stopped connecting to the internet.
Which of the following is causing the issue?
The issue is caused by the lack of a default route defined in the /etc/sysconfig/network-scripts/ifcfg-enp0s3 file. A default route is a special route that specifies where to send packets that do not match any other routes in the routing table. Without a default route, the server will not be able to communicate with hosts outside its local network. The default route is usually configured with the GATEWAY option in the network interface configuration file. For example, to set the default gateway to 192.168.1.1, the file should contain:
GATEWAY=192.168.1.1
The other options are not causing the issue. The DNS address is not commented out in the configuration file, it is specified with the DNS1 option. The search entry in the /etc/resolv.conf file is correct, it specifies the domain name to append to unqualified hostnames. Wired connection 1 is online, as indicated by the ONBOOT=yes option and the output of ip link show enp0s3 command.Reference:Configuring IP Networking with nmcli;Configuring IP Networking with ifcfg Files
A Linux administrator was tasked with deleting all files and directories with names that are contained in the sobelete.txt file. Which of the following commands will accomplish this task?
The commandcat toDelete.txt | xargs rm -rfwill delete all files and directories with names that are contained in the toDelete.txt file. Thecatcommand reads the file and outputs its contents to the standard output. The|operator pipes the output to the next command. Thexargscommand converts the output into arguments for the next command. Therm -rfcommand removes the files and directories recursively and forcefully. This is the correct way to accomplish the task. The other options are incorrect because they either use the wrong options (-finstead of-aforxargs), the wrong arguments (toDelete.txtinstead oftoDelete.txt filenameforrm), or the wrong commands (rminstead ofxargs).Reference:CompTIA Linux+ (XK0-005) Certification Study Guide, Chapter 11: Managing Files and Directories, pages 349-350.
Which of the following is a benefit of a service mesh?
A service mesh provides secure, encrypted communication between microservices in a Kubernetes environment. It also provides features like traffic management, observability, and load balancing at the network layer. The most popular service mesh implementations, such as Istio, handle security by enforcing mutual TLS (mTLS) encryption between services, ensuring data privacy and integrity.
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