Linux+ Linux+ Filesystem and Storage Management 3

Question 1

Which RAID level provides striping with distributed parity and requires a minimum of 3 disks?

Accepted Answer

RAID 5

Answer

RAID 5 stripes data and parity across all disks (minimum 3), tolerating one disk failure while maintaining read performance.

Question 2

A developer runs 'ln file1 file2' then deletes file1. What happens to file2?

Accepted Answer

file2 remains intact with the data

Answer

Hard links share the same inode; deleting one filename only decrements the link count, so file2 remains fully accessible until all links are removed.

Question 3

What does the 'noatime' mount option do?

Accepted Answer

Disables access time updates on file reads

Answer

noatime stops the filesystem from updating the access time (atime) each time a file is read, reducing unnecessary disk writes.

Question 4

Which command converts a physical partition to an LVM physical volume?

Accepted Answer

pvcreate /dev/sdb1

Answer

pvcreate initializes a disk or partition as an LVM physical volume by writing LVM metadata to it.

Question 5

A XFS filesystem is full. Which command increases its size to use newly added space?

Accepted Answer

xfs_growfs /mount/point

Answer

xfs_growfs expands a mounted XFS filesystem to fill available space; it takes the mount point, not the device, as its argument.

Linux Practice Test