An administrator accidentally deleted the /boot/vmlinuz file and must resolve the issue before the server is rebooted. Which of the following commands should the administrator use to identify the correct

• A.rpm -qa | grep kernel; uname -a
• B.telinit 1; restorecon -Rv /boot
• C.cat /etc/centos-release; rpm -Uvh --nodeps
• D.yum -y update; shutdown -r now

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After listing the properties of a system account, a systems administrator wants to remove the expiration date of a user account. Which of the following commands will accomplish this task?

• A.chmod -G system account name
• B.chgrp system accountname
• C.passwd -s accountname
• D.chage -E -1 accountname

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A cloud engineer needs to change the secure remote login port from 22 to 49000. Which of the following files should the engineer modify to change the port number to the desired value?

• A./etc/services
• B./etc/host.conf
• C./etc/ssh/sshd_config
• D./etc/hostname

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Which of the following enables administrators to configure and enforce MFA on a Linux system?

• A.SELinux
• B.Kerberos
• C.PAM
• D.PKI

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An administrator deployed a Linux server that is running a web application on port 6379/tcp.
SELinux is in enforcing mode based on organization policies.
The port is open on the firewall.
Users who are trying to connect to a local instance of the web application receive Error 13, Permission denied.
The administrator ran some commands that resulted in the following output:

Which of the following commands should be used to resolve the issue?

• A.semanage port -l -t http_port_tcp 6379
• B.semanage port -a -t http_port_t -p tcp 6379
• C.semanage port -d -t http_port_t -p tcp 6379
• D.semanage port -a http_port_t -p top 6379

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