RHCSA RHCSA EX200 4

Question 1

Which command creates a new physical volume on /dev/sdc for use with LVM?

Accepted Answer

pvcreate /dev/sdc

Answer

'pvcreate' initializes a disk or partition with LVM metadata, making it a physical volume.

Question 2

You need to schedule a one-time task to run in 30 minutes. Which command should you use?

Accepted Answer

at now + 30 minutes

Answer

'at' schedules one-time jobs; 'now + 30 minutes' specifies the execution time relative to the current time.

Question 3

Which command permanently changes the SELinux context of /srv/web to httpd_sys_content_t and updates the policy database?

Accepted Answer

semanage fcontext -a -t httpd_sys_content_t '/srv/web(/.*)?' && restorecon -Rv /srv/web

Answer

semanage fcontext adds a persistent policy rule; restorecon applies it, making the change survive a 'restorecon' or relabel.

Question 4

Which /etc/fstab field controls the order of filesystem checks at boot?

Accepted Answer

Field 6 (pass)

Answer

The sixth field (pass) controls fsck order: 0=skip, 1=root first, 2=other filesystems checked after root.

Question 5

A user must be able to run '/usr/bin/systemctl restart httpd' as root without a password. Which sudoers entry achieves this?

Accepted Answer

alice ALL=(root) NOPASSWD: /usr/bin/systemctl restart httpd

Answer

The sudoers syntax is 'user host=(runas) options: command'; NOPASSWD before the colon disables password prompting for that command.

RHCSA Exam Practice Test