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

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トータル 403 問

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出題：1

A Linux administrator needs to analyze a failing application that is running inside a container. Which of the following commands allows the Linux administrator to enter the running container and analyze the logs that are stored inside?

A. docker run -ti app /bin/sh

B. docker exec -d app /bin/bash

C. podman exec -ti app /bin/sh

D. podman run -d app /bin/bash

正解：C 解答を投票する

解説: (GoShiken メンバーにのみ表示されます)

出題：2

A systems administrator wants to check for running containers. Which of the following commands can be used to show this information?

A. docker ps

B. docker stats

C. docker pull

D. docker list

正解：A 解答を投票する

解説: (GoShiken メンバーにのみ表示されます)

出題：3

A database administrator requested the installation of a custom database on one of the servers. Which of the following should the Linux administrator configure so the requested packages can be installed?

A. /etc/yum.repos.d/db.repo

B. /etc/resolv.conf

C. /etc/yum.conf

D. /etc/ssh/sshd.conf

正解：A 解答を投票する

解説: (GoShiken メンバーにのみ表示されます)

出題：4

A systems administrator intends to use a UI-JID to mount a new partition per-manently on a Linux system.
Which of the following commands can the adminis-trator run to obtain information about the UUlDs of all disks attached to a Linux system?

A. fcstat

B. blkid

C. Isscsi

D. dmsetup

正解：B 解答を投票する

解説: (GoShiken メンバーにのみ表示されます)

出題：5

Employees in the finance department are having trouble accessing the file /opt/work/file. All IT employees can read and write the file. Systems administrator reviews the following output:

Which of the following commands would permanently fix the access issue while limiting access to IT and finance department employees?

A. setfacl -m g:finance:rw file

B. chmod 666 file

C. chattr +i file

D. chown it:finance file

正解：A 解答を投票する

解説: (GoShiken メンバーにのみ表示されます)

出題：6

The group named support is unable to make changes to the config file. An administrator is reviewing the permissions and sees the following:
S Is -1 config
-rw-rw----. 1 root app 4682 02-15 11:25 config
Which of the following should the administrator execute in order to give the support group access to modify the file while preserving the current ownership?

A. chown :support config

B. chmod 664 config

C. chmod g+s config

D. setfacl -m g:support:rw- config

正解：B 解答を投票する

解説: (GoShiken メンバーにのみ表示されます)

出題：7

Which of the following is the best tool for dynamic tuning of kernel parameters?

A. turbostat

B. tuned

C. tune2fs

D. tuned-adm

正解：B 解答を投票する

解説: (GoShiken メンバーにのみ表示されます)

出題：8

A user (userA) has reported issues while logging in to the system. The following output has been provided:
bash
Could not chdir to home directory /home/userA: Permission denied
-bash: /home/userA/.bash_profile: Permission denied
# cat /etc/passwd | grep userA
userA:x:1234:3400:userA account:/home/userA/:/bin/bash
# passwd -S userA
userA PS 2022-10-17 1 99999 0 (Password set. SHA512 crypt.)
# groups userA
admin dev usergrp
# ls -lth /home/
drwx------ 7 root admin 9 Jan 17 2019 userA
drwxr-xr-x 4 userC app 9 Jan 23 2020 userC
Which of the following describes the issue userA is having?

A. The account password for userA has expired

B. The assigned home directory is not owned by userA

C. The group for userA is not assigned correctly

D. The password for userA is not set

正解：B 解答を投票する

解説: (GoShiken メンバーにのみ表示されます)

出題：9

A Linux administrator needs to forward port 8000 on a remote server to port 8000 on a local server. Which of the following commands should the administrator run on the local server to achieve this goal?

A. iptables -A FORWARD -m state -p tcp -d remote --dport 9000 -j accept

B. ssh -R 8000:localhost:9000 remote

C. socat TCP4-LISTEN:8000,fork TCP4:remote:8000

D. firewall-cmd --add-forward-port=port=8000=tcp=8000=remote

正解：B 解答を投票する

解説: (GoShiken メンバーにのみ表示されます)

出題：10

A systems administrator installed a new software program on a Linux server. When the systems administrator tries to run the program, the following message appears on the screen.

Which of the following commands will allow the systems administrator to check whether the system supports virtualization?

A. dmidecode -s system-version

B. sysctl -a

C. lscpu

D. cat /sys/device/system/cpu/possible

正解：C 解答を投票する

解説: (GoShiken メンバーにのみ表示されます)

出題：11

A systems engineer deploys a new application server, but the server cannot communicate with the back-end database hostname. The engineer confirms that the application server can ping the database server's IP address. Which of the following is the most likely cause of the issue?

A. Unreachable default gateway

B. Missing route configuration

C. Incorrect DNS servers

D. Misconfigured subnet mask

正解：C 解答を投票する

解説: (GoShiken メンバーにのみ表示されます)

出題：12

As part of the requirements for installing a new application, the swappiness parameter needs to be changed to
O. This change needs to persist across re-boots and be applied immediately. A Linux systems administrator is performing this change. Which of the following steps should the administrator complete to accomplish this task?

A. sysctl -v >> / proc/meminfo & & echo "vm. swapiness=0"

B. sysctl -h "vm. swapiness-O" && echo / etc/vmswapiness

C. echo "vm. swappiness-()" >> /etc/sysctl . conf && sysctl -p

D. echo "vrn. >> / proc/meminfo && sysctl -a

正解：C 解答を投票する

解説: (GoShiken メンバーにのみ表示されます)

出題：13

A junior developer is unable to access an application server and receives the following output:

The systems administrator investigates the issue and receives the following output:

Which of the following commands will help unlock the account?

A. pam_tally2 --user+dev2 --quiet

B. Pam_tally2 --user=dev2 --quiet

C. pam_tally2 --user=dev2 --reset

D. pam_ tally2 --user=dev2

正解：C 解答を投票する

解説: (GoShiken メンバーにのみ表示されます)

出題：14

A systems administrator needs to install the file installer_0.17-41.2_amd64.deb. Which of the following commands should the administrator use?

A. apt install installer

B. rpm -i installer_0.17-41.2_amd64.deb

C. yum localinstall installer_0.17-41.2_amd64.deb

D. dpkg -i installer_0.17-41.2_amd64.deb

正解：D 解答を投票する

解説: (GoShiken メンバーにのみ表示されます)

出題：15

A systems administrator needs to verify whether the built container has the app.go file in its root directory.
Which of the following can the administrator use to verify the root directory has this file?

A. docker exec <container_name> ls

B. docker container inspect

C. docker ps <container_name>

D. docker image inspect

正解：A 解答を投票する

解説: (GoShiken メンバーにのみ表示されます)

出題：16

Which of the following Git commands would send committed changes to a remote repository?

A. git stash

B. git commit -a

C. git add .

D. git push origin master

正解：D 解答を投票する

解説: (GoShiken メンバーにのみ表示されます)

出題：17

A Linux administrator was informed that the server time zone is incorrect. Which of the following commands should the administrator use to correct the time zone?

A. systemctl configure-timezone Africa/Nairobi

B. timedatectl set-timezone America/New_York

C. systemd-timezone set Asia/Tokyo

D. tzconfig configure Europe/London

正解：B 解答を投票する

解説: (GoShiken メンバーにのみ表示されます)

出題：18

A junior systems administrator has just generated public and private authentication keys for passwordless login. Which of the following files will be moved to the remote servers?

A. id_rsa

B. id_dsa.pem

C. id_rsa.pub

D. id_ecdsa

正解：C 解答を投票する

解説: (GoShiken メンバーにのみ表示されます)

出題：19

A systems administrator receives reports that several virtual machines in a host are responding slower than expected. Upon further investigation, the administrator obtains the following output from one of the affected systems:

Which of the following best explains the reported issue?

A. The virtual machine is running out of CPU resources, leading to users experiencing longer response times.

B. The physical host has enough CPU cores, leading to users running more processes to compensate for the slower response times.

C. The virtual machine has enough CPU cycles, leading to the system use percentage being higher than expected.

D. The physical host is running out of CPU resources, leading to insufficient CPU time being allocated to virtual machines.

正解：A 解答を投票する

解説: (GoShiken メンバーにのみ表示されます)

出題：20

A Linux administrator is troubleshooting SSH connection issues from one of the workstations.
When users attempt to log in from the workstation to a server with the IP address 104.21.75.76, they receive the following message: