DEA-1TT5 Backup, Recovery, and Business Continuity 2 — Questions and Answers
Question 1: What is 'continuous data protection' (CDP)?
- Backing up data every hour around the clock
- A real-time data protection technique that records every write to storage, enabling recovery to any point in time (Correct answer)
- Continuously monitoring backup jobs for errors
- A method of protecting data using RAID without scheduled backups
Correct answer: A real-time data protection technique that records every write to storage, enabling recovery to any point in time
CDP captures every change made to a data set as it happens, creating a continuous journal of writes that allows recovery to any arbitrary point in time, not just scheduled backup intervals.
Question 2: What is a 'recovery point' in backup terminology?
- The physical location where backup tapes are stored
- A specific point in time to which data can be restored from a backup or snapshot (Correct answer)
- The network endpoint used to access backup storage
- The maximum capacity of a backup repository
Correct answer: A specific point in time to which data can be restored from a backup or snapshot
A recovery point is a specific point-in-time backup or snapshot instance to which data can be restored, with more frequent backups providing more granular recovery point options.
Question 3: What does 'replication' mean in a storage context, and how does it support disaster recovery?
- Creating RAID copies within a single array
- Copying data continuously or periodically to a secondary system at the same or remote site for high availability and disaster recovery (Correct answer)
- Duplicating backup tapes for offsite storage
- Mirroring management data between two storage controllers
Correct answer: Copying data continuously or periodically to a secondary system at the same or remote site for high availability and disaster recovery
Storage replication continuously or periodically copies data changes to a secondary system, maintaining an up-to-date copy that can be activated if the primary site fails.
Question 4: What is 'vaulting' in backup and archival strategies?
- Physically securing a storage array in a locked room
- Copying backup media to a secure offsite location for long-term retention and disaster recovery (Correct answer)
- Encrypting backup data before it is stored
- Compressing backup data to reduce storage usage
Correct answer: Copying backup media to a secure offsite location for long-term retention and disaster recovery
Vaulting involves transporting or transmitting backup copies to a secure offsite facility (a vault), protecting against site-level disasters and enabling data recovery if the primary site is destroyed.
Question 5: Which backup topology uses a dedicated storage network to connect backup servers and media, eliminating backup traffic from the LAN?
- LAN-based backup
- LAN-free backup using a SAN (Correct answer)
- Server-based backup
- Agent-free backup
Correct answer: LAN-free backup using a SAN
LAN-free backup routes backup data over a SAN (Fibre Channel or iSCSI) directly between the storage array and backup media, removing large backup traffic loads from the production LAN.
Question 6: What is the purpose of a 'backup catalog' or 'backup index'?
- A list of all servers approved for backup operations
- A database that tracks what data was backed up, when, and where it is stored, enabling fast search and restore operations (Correct answer)
- A catalog of backup software licenses
- An index of backup job schedules and policies
Correct answer: A database that tracks what data was backed up, when, and where it is stored, enabling fast search and restore operations
The backup catalog is a metadata database that records every backup session, file location, and media reference, enabling the backup software to quickly locate and restore specific files or data sets.
