XK0-006無料問題集「CompTIA Linux+ Certification」

質問 1

An administrator receives the following output while attempting to unmount a filesystem:
umount /data1: target is busy.
Which of the following commands should the administrator run next to determine why the filesystem is busy?

（A）ps -f /data1

（B）top -d /data1

（C）lsof | grep /data1

（D）du -sh /data1

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 2

Which of the following is the location for built-in Linux executable files and utilities?

（A）/sys

（B）/etc

（C）/bin

（D）/var

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 3

Which of the following commands is used to ensure a service starts automatically at boot on a system using systemd?

（A）systemctl enable httpd

（B）systemctl reload httpd

（C）systemctl start httpd

（D）systemctl status httpd

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 4

While reviewing local accounts on a server, a Linux administrator discovers that multiple users have not changed their passwords in more than a year. Which of the following commands should the administrator execute to bring the users' accounts into compliance with the 90-day guideline?

（A）usermod -aG 90

（B）loginctl -H 90

（C）passwd -d 90

（D）chage -M 90

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 5

Which of the following is the main reason for setting up password expiry policies?

（A）To avoid using the same passwords repeatedly

（B）To mitigate the use of exposed passwords

（C）To increase password strength and complexity

（D）To force usage of passwordless authentication

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 6

Which of the following utilities supports the automation of security compliance and vulnerability management?

（A）Nmap

（B）AIDE

（C）OpenSCAP

（D）SELinux

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 7

A small group of remote users needs permission to run some administrative commands on a Linux server. Which of the following approaches is the best way to address this request?

（A）Create a Linux group, add the users, and configure this group on /etc/sudoersto use sudo, thus allowing them to switch to root user.

（B）Request a list of utilities they need to use with elevated privileges, and add the appropriate rules.

（C）Set the configuration parameter PermitRootLogin on sshd_configto "yes" and share the root password with this group of users.

（D）Set the sticky bit in all binaries requested for use by this group of users.

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 8

Which of the following allows modules to be used in Python scripts?

（A）import

（B）__init__

（C）__name__

（D）det

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 9

A Linux administrator notices that an application is having trouble connecting to an external database. Which of the following commands should the administrator use to validate the connection to the remote port exposed by a database server?

（A）arp -an | grcp db.comptia.org | grcp 3306

（B）nc -v db.comptia.org 3306

（C）ss -plant | qrep 3306

（D）dig MX db.complia.org:3306

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 10

Which of the following is a reason multiple password changes on the same day are not allowed?

（A）To stop users from circulating through the password history to return to the originally used password

（B）To avoid brute-forced password attacks by making them too long to perform

（C）To enforce using multifactor authentication with stronger encryption algorithms instead of passwords

（D）To increase password complexity and the system's security

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 systems administrator troubleshoots a connectivity issue and needs to determine whether port
449 is open. Which of the following commands should the administrator use?

（A）tracepath local host. 449

（B）dig localhost:449

（C）ss -an | grep 449

（D）ip 1ink 449

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

Which of the following most accurately describes a webhook?

（A）An SNMP-based API for network device monitoring

（B）An authentication method for web-server communication

（C）A means to transmit sensitive information between systems

（D）An HTTP-based callback function

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)

XK0-006 無料問題集「CompTIA Linux+ Certification」

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