XK0-005 Exam & XK0-005 Vorbereitung

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XK0-005 Vorbereitung & XK0-005 Deutsch Prüfungsfragen

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CompTIA Linux+ Certification Exam XK0-005 Prüfungsfragen mit Lösungen (Q161-Q166):

161. Frage
A cloud engineer is asked to copy the file deployment.yaml from a container to the host where the container is running. Which of the following commands can accomplish this task?

A. docker cp container_id:/deployment.yaml deployment.yaml
B. docker cp container_id/deployment.yaml deployment.yaml
C. docker cp deployment.yaml local://deployment.yaml
D. docker cp container_id/deployment.yaml local://deployment.yaml

Antwort: A

Begründung:
The command docker cp container_id:/deployment.yaml deployment.yaml can accomplish the task of copying the file deployment.yaml from a container to the host. The docker command is a tool for managing Docker containers and images. The cp option copies files or directories between a container and the local filesystem. The container_id is the identifier of the container, which can be obtained by using the docker ps command. The /deployment.yaml is the path of the file in the container, which must be preceded by a slash. The deployment.yaml is the path of the file on the host, which can be relative or absolute. The command docker cp container_id:/deployment.yaml deployment.yaml will copy the file deployment.yaml from the container to the current working directory on the host. This is the correct command to use to accomplish the task. The other options are incorrect because they either use the wrong syntax (docker cp container_id/deployment.yaml deployment.yaml or docker cp container_id/deployment.yaml local://deployment.yaml) or do not exist (docker cp deployment.yaml local://deployment.
yaml). References: CompTIA Linux+ (XK0-005) Certification Study Guide, Chapter 19: Managing Cloud and Virtualization Technologies, page 567.

162. Frage
A Linux administrator is scheduling a system job that runs a script to check available disk space every hour.
The Linux administrator does not want users to be able to start the job. Given the following:

The Linux administrator attempts to start the timer service but receives the following error message:

Which of the following is MOST likely the reason the timer will not start?

A. The checkdiskspace.timer should be started using the sudo command.
B. The timers.target should be reloaded to get the new configuration.
C. The checkdiskspace.timer unit should be enabled via systemct1.
D. The checkdiskspace.timer should be configured to allow manual starts.

Antwort: D

Begründung:
Explanation
The most likely reason the timer will not start is that the checkdiskspace.timer should be configured to allow manual starts. By default, systemd timers do not allow manual activation via systemct1 start, unless they have RefuseManualStart=no in their [Unit] section. This option prevents users from accidentally starting timers that are meant to be controlled by other mechanisms, such as calendar events or dependencies. To enable manual starts for checkdiskspace.timer, the administrator should add RefuseManualStart=no to its [Unit] section and reload systemd.
The other options are not correct reasons for the timer not starting. The checkdiskspace.timer unit does not need to be enabled via systemct1 enable, because enabling a timer only makes it start automatically at boot time or after a system reload, but does not affect manual activation. The timers.target does not need to be reloaded to get the new configuration, because reloading a target only affects units that have a dependency on it, but does not affect manual activation. The checkdiskspace.timer does not need to be started using the sudo command, because the administrator is already running systemct1 as root, as indicated by the # prompt. References: systemd.timer(5) - Linux manual page; systemct1(1) - Linux manual page

163. Frage
A Linux administrator updated the configuration file for the httpd web service. The administrator needs to apply the updated changes to the service without interrupting any running sessions. Which of the following commands should the administrator run to accomplish this task?

A. systemctl restart httpd
B. systemctl status httpd
C. systemctl mask httpd
D. systemctl reload httpd

Antwort: D

Begründung:
The systemctl reload httpd command reloads the Apache HTTP server configuration without terminating any existing connections. This is ideal for applying configuration changes without disrupting the current web traffic, ensuring seamless operation.

164. Frage
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?

A. systemctl stop systemd-journald
systemctl start systemd-journald
B. pkill -HUP systemd-journald
systemctl restart systemd-journald
C. journalctl -rotate
journalctl --vacuum-time=ls
D. rm -rf /var/log/journal
systemctl restart systemd-journald

Antwort: A

Begründung:
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.

165. Frage
When trying to log in remotely to a server, a user receives the following message:

The server administrator is investigating the issue on the server and receives the following outputs:

Which of the following is causing the issue?

A. The account was locked out due to three failed logins.
B. The user entered the wrong password.
C. The user has the wrong shell assigned to the account.
D. The wrong permissions are on the user's home directory.

Antwort: C

Begründung:
Explanation
The user has the wrong shell assigned to the account, which is causing the issue. The output 1 shows that the user's shell is set to /bin/false, which is not a valid shell and will prevent the user from logging in. The output
2 shows that the user's home directory has the correct permissions (drwxr-xr-x), and the output 3 shows that the user entered the correct password and was accepted by the SSH daemon, but the session was closed immediately due to the invalid shell. The other options are incorrect because they are not supported by the outputs. References: CompTIA Linux+ (XK0-005) Certification Study Guide, Chapter 13: Managing Network Services, page 413.

166. Frage
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