A Linux administrator created the directory /project/access2all. By creating this directory, the administrator is trying to avoid the deletion or modification of files from non-owners. Which of the following will accomplish this goal?

A. chmod +t /project/access2all

B. chmod +rws /project/access2all

C. chmod 2770 /project/access2all

D. chmod ugo+rwx /project/access2all

In which of the following filesystems are system logs commonly stored?

A. /var

B. /tmp

C. /etc

D. /opt

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. restorecon -rv .ssh/authorized_key

B. mv .ssh/authorized_key .ssh/authorized_keys

C. systemctl restart sshd.service

D. chmod 600 mv .ssh/authorized_key

Joe, a user, is unable to log in to the Linux system. Given the following output:

Which of the following commands would resolve the issue?

A. usermod -s /bin/bash joe

B. pam_tally2 -u joe -r

C. passwd -u joe

D. chage -E 90 joe

After installing some RPM packages, a systems administrator discovers the last package that was installed was not needed. Which of the following commands can be used to remove the package?

A. dnf remove packagename

B. apt-get remove packagename

C. rpm -i packagename

D. apt remove packagename

A Linux administrator is tasked with adding users to the system. However, the administrator wants to ensure the users' access will be disabled once the project is over. The expiration date should be 2021-09-30. Which of the following commands will accomplish this task?

A. sudo useradd -e 2021-09-30 Project_user

B. sudo useradd -c 2021-09-30 Project_user

C. sudo modinfo -F 2021-09-30 Project_uses

D. sudo useradd -m -d 2021-09-30 Project_user

Which of the following technologies can be used as a central repository of Linux users and groups?

A. LDAP

B. MFA

C. SSO

D. PAM

To harden one of the servers, an administrator needs to remove the possibility of remote administrative login via the SSH service. Which of the following should the administrator do?

A. Add the line DenyUsers root to the /etc/hosts.deny file.

B. Set PermitRootLogin to no in the /etc/ssh/sshd_config file.

C. Add the line account required pam_nologin. so to the /etc/pam.d/sshd file.

D. Set PubKeyAuthentication to no in the /etc/ssh/ssh_config file.

Users are reporting that writes on a system configured with SSD drives have been taking longer than expected, but reads do not seem to be affected. A Linux systems administrator is investigating this issue and working on a solution. Which of the following should the administrator do to help solve the issue?

A. Run the corresponding command to trim the SSD drives.

B. Use fsck on the filesystem hosted on the SSD drives.

C. Migrate to high-density SSD drives for increased performance.

D. Reduce the amount of files on the SSD drives.

A systems administrator detected corruption in the /data file system. Given the following output:

Which of the following commands can the administrator use to BEST address this issue?

A. umount /data mkfs.xfs /dev/sdc1 mount /data

B. umount /data xfs repair /dev/sdc1 mount /data

C. umount /data fsck /dev/sdc1 mount /data

D. umount /data vs /dev/sdc1 mount /data