Which process involves making copies of data so that other copies may be used to restore the original?

Which process involves making copies of data so that other copies may be used to restore the original?

• A. Hub
• B. Back-up
• C. Switch
• D. Proxy Server

Answer: (B)

Creating copies of data so you can restore the original if something goes wrong is the purpose of a backup. Backups guard against data loss from hardware failures, accidental deletions, file corruption, or malware by giving you a recoverable copy. They can be full backups that capture everything or incremental/differential backups that record only changes since the last backup, which helps save time and storage. When you need to recover, you restore from these copies to a specific point in time or to the latest good version, depending on your plan. The other items are network devices rather than data protection processes. A hub repeats signals to all ports, a switch sends data to the correct device, and a proxy server handles client requests and may cache content. None of these are principally about making data copies for restoration, so the backup option is the correct concept.

Creating copies of data so you can restore the original if something goes wrong is the purpose of a backup. Backups guard against data loss from hardware failures, accidental deletions, file corruption, or malware by giving you a recoverable copy. They can be full backups that capture everything or incremental/differential backups that record only changes since the last backup, which helps save time and storage. When you need to recover, you restore from these copies to a specific point in time or to the latest good version, depending on your plan.

The other items are network devices rather than data protection processes. A hub repeats signals to all ports, a switch sends data to the correct device, and a proxy server handles client requests and may cache content. None of these are principally about making data copies for restoration, so the backup option is the correct concept.