XK0-005無料問題集「CompTIA Linux+ Certification」

質問 1

SIMULATION
After installing a new web server, you are unable to browse to the default web page.
INSTRUCTIONS
Review all the command output and select the command needed to remediate the issue.
If at any time you would like to bring back the initial state of the simulation, please click the Reset All button.

正解：

質問 2

A systems administrator receives a report that the web server is not running after a planned system reboot. After starting the web server manually, which of the following commands should the administrator issue to ensure the web server starts at boot time?

（A）systemctl service on

（B）systemctl enable <name>.service

（C）systemctl on <name>.service

（D）systemctl service enable

正解：B 解答を投票する

解説: (JPNTest メンバーにのみ表示されます)

質問 3

A Linux administrator deployed a large-scale application service as a containerized pod. The Linux administrator needs to continually send the application's log file to the company's central log store. Which of the following should the Linux administrator do to efficiently perform this task?

（A）Execute docker inspect and run a log rsync replication.

（B）Configure a sidecar to perform log shipping.

（C）Run docker exec to access the logs within the container.

（D）Set up a custom task scheduler via kubectl.

正解：B 解答を投票する

解説: (JPNTest メンバーにのみ表示されます)

質問 4

A Linux administrator has physically added a new RAID adapter to a system. Which of the following commands should the Linux administrator run to confirm that the device has been recognized? (Choose two.)

（A）pvdisplay

（B）lshw -class disk

（C）rmdir /dev

（D）ls -ll /etc

（E）dmesg

（F）rmmod

正解：B、E 解答を投票する

解説: (JPNTest メンバーにのみ表示されます)

質問 5

A technical support engineer receives a ticket from a user who is trying to create a 1KB file in the
/tmp directory and is getting the following error No space left on device.
The support engineer checks the /tmp directory, and it has 20GB of free space.
Which of the following BEST describes a possible cause for this error?

（A）The filesystem is formatted with a 4MB block size.

（B）The /tmp directory has been set with an immutable attribute.

（C）the filesystem ran out of inodes.

（D）The /tmp directory is not mounted.

正解：C 解答を投票する

解説: (JPNTest メンバーにのみ表示されます)

質問 6

A file server is sharing a directory called /share between team members inside a company. The fileshare needs to be moved from serverA to /newshare located on serverB with all permissions and attributes preserved. Which of the following commands would BEST achieve this task?

（A）tar -cvf /share/* serverB:/newshare

（B）rsync -aHAX /share/* serverB:/newshare

（C）dd if=/share/* of=serverB:/newshare

（D）mirrorlv /share/* serverB:/newshare

正解：B 解答を投票する

解説: (JPNTest メンバーにのみ表示されます)

質問 7

Ann, a Linux administrator, is storing scripts in a private Git repository.
Which of the following commands should Ann use to avoid entering the login and password every time Ann commits change?

（A）Git init shared-true

（B）Git credential approve

（C）Echo authe n tapprove `'>> .git/config

（D）Git config credential.help cache

正解：C 解答を投票する

質問 8

Which of the following is the BEST reason for not storing database files in the /var directory?

（A）Files in /var do not have strict file permissions.

（B）The /var filesystem is not fast enough for database files.

（C）The number of files in /var is limited by the available inodes.

（D）If log files fill up /var, it might corrupt the database.

正解：D 解答を投票する

質問 9

A junior administrator is trying to set up a passwordless SSH connection to one of the servers.
The administrator follows the instructions and puts the key in the authorized_key file at the server, but the administrator is still asked to provide a password during the connection.
Given the following output:

Which of the following commands would resolve the issue and allow an SSH connection to be established without a password?

（A）chmod 600 mv .ssh/authorized_key

（B）systemctl restart sshd.service

（C）mv .ssh/authorized_key .ssh/authorized_keys

（D）restorecon -rv .ssh/authorized_key

正解：C 解答を投票する

解説: (JPNTest メンバーにのみ表示されます)

質問 10

Which of the following would be the BEST solution for a systems administrator to access the graphical user environment of a Linux machine remotely?

（A）VNC

（B）X11

（C）RPC

（D）KDE

正解：A 解答を投票する

解説: (JPNTest メンバーにのみ表示されます)

質問 11

A Linux administrator needs to harden a system and guarantee that the Postfix service will not run, even after a restart or system upgrade. Which of the following commands allows the administrator to fulfill the requirement?

（A）systemctl stop postfix.service

（B）systemctl -n restart postfix.service

（C）systemctl mask postfix.service

（D）systemctl disable postfix.service

正解：C 解答を投票する

解説: (JPNTest メンバーにのみ表示されます)

質問 12

A systems administrator is tasked with creating an Ansible playbook to automate the installation of patches on several Linux systems. In which of the following languages should the playbook be written?

（A）SQL

（B）YAML

（C）JSON

（D）HTML

正解：B 解答を投票する

解説: (JPNTest メンバーにのみ表示されます)

質問 13

A customer reports a Linux production server is randomly suffering degraded performance. The administrator verifies that the sysstatpackage is installed and enabled on the server.
Which of the following would BEST determine what is causing the impact on performance?

（A）Leave a pingrunning overnight from a laptop to the server to catch any latency encountered.

（B）Open a screensession and run topinside of it. Let it run over night and collect the data.

（C）Analyze the data in /var/log/sausing the sarcommand.

（D）Create a cronjob that runs uptimeevery 15 minutes to collect historical data of the load average of the system.

正解：C 解答を投票する

質問 14

A user is reporting unusual slowness when trying to transfer a large file to an NFS server from a workstation. The administrator runs tracepath and gets the following output:

Which of the following BEST describes the issue and a possible solution?

（A）There are dropped packets at an intermediate router. Work with the network team to correct the issue.

（B）There is latency on an intermediate router. Increase the path MTU to compensate.

（C）There is latency at the storage device. Work with the storage team to correct the issue.

（D）The path MTU is lower than the source MTU. Reduce the source MTU setting.

正解：D 解答を投票する

質問 15

A Linux engineer needs to block an incoming connection from the IP address 2.2.2.2 to a secure shell server and ensure the originating IP address receives a response that a firewall is blocking the connection. Which of the following commands can be used to accomplish this task?

（A）iptables -A INPUT -p tcp --dport ssh -s 2.2.2.2 -j QUEUE

（B）iptables -A INPUT -p tcp --dport ssh -s 2.2.2.2 -j DROP

（C）iptables -A INPUT -p tcp --dport ssh -s 2.2.2.2 -j REJECT

（D）iptables -A INPUT -p tcp --dport ssh -s 2.2.2.2 -j RETURN

正解：C 解答を投票する

解説: (JPNTest メンバーにのみ表示されます)

質問 16

The ability to add web servers dynamically during peak user activity and remove them when user activity decreases is an example of:

（A）inventory management

（B）build automation

（C）configuration automation

（D）infrastructure automation

正解：C 解答を投票する

質問 17

A junior Linux administrator is tasked with installing an application. The installation guide states the application should only be installed in a run level 5 environment.

Which of the following commands would ensure the server is set to runlevel 5?

（A）systemctl isolate network.target

（B）systemctl isolate basic.target

（C）systemctl isolate multi-user.target

（D）systemctl isolate graphical.target

正解：D 解答を投票する

解説: (JPNTest メンバーにのみ表示されます)

質問 18

A systems administration team has decided to their systems as immutable instances. They keep the desired state of each of their systems in version control and apply automation whenever they provision a new instance. If there is an issue with one of their servers, instead of troubleshooting the issue they terminate the instance and rebuild it using automation.
Which of the following is this an example of?

（A）Agentless deployment

（B）Orchestration

（C）Infrastructure as code

（D）Inventory

正解：C 解答を投票する

解説: (JPNTest メンバーにのみ表示されます)

XK0-005 無料問題集「CompTIA Linux+ Certification」

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