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CompTIA Linux+ Certification Sample Questions:

1. A Linux systems administrator is resolving a privileged access issue for users who are members of an admin group. Which of the following configuration files should the administrator update so the users in the admin group will have root privileged access to the Linux system?

A) /etc/sudoers
B) /etc/group
C) /etc/shadow
D) /etc/login.defs

2. An administrator needs to verify the user ID, home directory, and assigned shell for the user named "accounting." Which of the following commands should the administrator use to retrieve this information?

A) grep accounting /etc/shadow
B) id accounting
C) who accounting
D) qetent passwd accounting

3. A Linux administrator is updating the group membership by executing the following commands:

However, the group membership is not changing. Which of the following explains this issue?

A) The options wheeland adminare transposed.
B) Executing usermodwith sudois not permitted.
C) Users cannot be added to the wheelgroup with the usermodcommand.
D) The command groupswas run with sudoprivileges.

4. Which of the following commands should a Linux administrator use to determine the version of a kernel module?

A) lsmod bluetooth
B) depmod bluetooth
C) modinfo bluetooth
D) modprobe bluetooth

5. Users connecting to a MySQL database on a Linux system report frequent errors. An administrator reviews the following partial output of the /proc/meminfo and freecommands:

Which of the following should the administrator do to ensure that the MySQL service will continue to run even if the system runs out of swap space? (Choose two.)

A) Use disk quotas on the swap space to prevent MySQL from overutilizing the swap partition.
B) Issue the mkswap /dev/sda2; swapon -v /dev/sda2 command.
C) Issue the sysctl -w vm.overconunit_memory=2 command.(Invalid key)
D) Issue the dd if=/dev/zero of=/swapfile bs=1024 count=65536 command.
E) Issue the sysctl -w vm.overcommit_ratio=100 command.
F) Reload the /etc/fstab file by issuing the mount -a command.(Not sufficient alone)

Solutions: