An administrator needs to perform a backup of all servers for an upcoming disaster recovery exercise at a company cold site. Which of the following types of backup should be performed?

Snapshots are typically bound to the hypervisor or storage platform where they were created and cannot be independently used to restore servers at a cold site that lacks that platform.

Incremental backup only contains data changed since the last backup job, so restoration is impossible without first restoring the base full backup, which is not present at the cold site.

Differential backup contains all changes since the last full backup but is still dependent on having that full backup available to restore, which would not exist at the cold site.

A full backup contains a complete copy of all selected data without any dependency on prior backup sets, making it the only type that can stand alone at a cold site with no existing infrastructure. During a disaster recovery exercise at a cold site, administrators must restore servers entirely from the backup media brought to that location. Incremental or differential backups would be unusable without the prerequisite full backup already present at the site.