Linux + Set 5

A systems administrator made some changes in the ~/.bashrc file and added an alias command. When the administrator tried to use the alias command, it did not work. Which of the following should be executed FIRST?

• source ~/.bashrc

• read ~/.bashrc

• touch ~/.bashrc

• echo ~/.bashrc

A Linux administrator needs to create a new cloud.cpio archive containing all the files from the current directory. Which of the following commands can help to accomplish this task?

• ls | cpio -iv > cloud.epio

• ls | cpio -iv < cloud.epio

• ls | cpio -ov > cloud.cpio

• ls cpio -ov < cloud.cpio

A Linux administrator is trying to remove the ACL from the file /home/user/dat

a. txt but receives the following error message:

Given the following analysis:

Which of the following is causing the error message?

• The administrator is not using a highly privileged account.

• The filesystem is mounted with the wrong options.

• SELinux file context is denying the ACL changes.

• File attributes are preventing file modification.

Based on an organization's new cybersecurity policies, an administrator has been instructed to ensure that, by default, all new users and groups that are created fall within the specified values below.

To which of the following configuration files will the required changes need to be made?

• /etc/login.defs

• /etc/security/limits.conf

• /etc/default/useradd

• /etc/profile

A Linux system fails to start and delivers the following error message:

Which of the following commands can be used to address this issue?

• fsck.ext4 /dev/sda1

• partprobe /dev/sda1

• fdisk /dev/sda1

• mkfs.ext4 /dev/sda1

A Linux administrator needs to remove software from the server. Which of the following RPM options should be used?

• rpm -s

• rm -d

• rpm -q

• rpm -e

A systems administrator needs to check if the service systemd-resolved.service is running without any errors. Which of the following commands will show this information?

• systemctl status systemd-resolved.service

• systemctl enable systemd-resolved.service

• systemctl mask systemd-resolved.service

• systemctl show systemd-resolved.service

A Linux engineer has been notified about the possible deletion of logs from the file /opt/app/logs. The engineer needs to ensure the log file can only be written into without removing previous entries.

Which of the following commands would be BEST to use to accomplish this task?

• chattr +a /opt/app/logs

• chattr +d /opt/app/logs

• chattr +i /opt/app/logs

• chattr +c /opt/app/logs

A Linux engineer set up two local DNS servers (10.10.10.10 and 10.10.10.20) and was testing email connectivity to the local mail server using the mail command on a local machine when the following error appeared:

Send-mail: Cannot open mail:25

The local machine DNS settings are:

Which of the following commands could the engineer use to query the DNS server to get mail server information?

• dig @example.com 10.10.10.20 a

• dig @10.10.10.20 example.com mx

• dig @example.com 10.10.10.20 ptr

• dig @10.10.10.20 example.com ns

A Linux administrator wants to find out whether files from the wget package have been altered since they were installed. Which of the following commands will provide the correct information?

• rpm -i wget

• rpm -qf wget

• rpm -F wget

• rpm -V wget