LCA Backup & Disaster Recovery 2

Question 1

Which rsync option preserves symbolic links, permissions, timestamps, and owner info in a single flag?

Accepted Answer

-a

Answer

The -a (archive) flag combines -rlptgoD, preserving symbolic links, permissions, timestamps, owner, group, and device files.

Question 2

A full backup is taken Sunday; incremental backups Monday–Saturday. If Wednesday's backup is corrupt, which backups are needed to restore to Friday's state?

Accepted Answer

Sunday, Monday, Tuesday, Wednesday, Thursday, Friday

Answer

Incremental backups depend on every previous backup in the chain, so all backups from Sunday through Friday are required; a corrupt Wednesday breaks the chain.

Question 3

Which tar option appends new files to an existing archive without re-creating it?

Accepted Answer

--append (-r)

Answer

The -r (--append) option adds files to the end of an existing tar archive without modifying existing entries.

Question 4

What does the dump level 0 signify in the dump/restore backup utility?

Accepted Answer

Full backup of the entire filesystem

Answer

Dump level 0 always means a complete (full) backup of the entire filesystem; higher numbers back up changes since the last lower-numbered dump.

Question 5

Which command restores files interactively from a dump archive, allowing you to select specific files?

Accepted Answer

restore -i

Answer

restore -i starts an interactive shell where you can browse and selectively extract files from a dump archive.

(LCA) Certified Linux Administrator Practice Test

(LCA) Certified Linux Administrator Practice Test

LCA Backup & Disaster Recovery 2