LCA Backup & Disaster Recovery 4

Question 1

Which rsync option enables compression of data during transfer to reduce bandwidth usage?

Accepted Answer

-z

Answer

rsync -z compresses file data during the transfer, which reduces bandwidth at the cost of extra CPU usage on both endpoints.

Question 2

When using 'rsync --delete', what happens to files at the destination that no longer exist at the source?

Accepted Answer

They are deleted from the destination

Answer

rsync --delete removes files from the destination that are no longer present at the source, keeping the destination a true mirror.

Question 3

Which command would you use to restore a specific file 'etc/passwd' from a tar archive 'backup.tar.gz'?

Accepted Answer

tar -xzf backup.tar.gz etc/passwd

Answer

tar -xzf extracts (-x) from a gzip-compressed (-z) archive file (-f), and specifying 'etc/passwd' restores only that file.

Question 4

A disaster recovery plan calls for a 'warm standby' site. What best describes this?

Accepted Answer

A site with hardware and software pre-configured but not actively processing live traffic

Answer

A warm standby site has hardware and software ready but runs on recent (not real-time) data and requires some activation time before it can serve production traffic.

Question 5

What is the purpose of the 'mt' command in Linux backup operations?

Accepted Answer

Control magnetic tape drive operations such as rewind, eject, and seek

Answer

The mt (magnetic tape) command sends control operations to a tape drive, such as rewinding, forwarding, ejecting, or seeking to a specific position.

(LCA) Certified Linux Administrator Practice Test

(LCA) Certified Linux Administrator Practice Test

LCA Backup & Disaster Recovery 4