Backup Overview

1. What statement about backup is correct?

  Backed-up data is usually retained for very long periods of time

  Backup is an additional copy of data made from an original source

  Tape is the only type of media used with backups

  The three primary purposes of backup are disaster recovery, archival and data replication

2. What is the purpose of an operational backup?

  To allow restoring a computer to operational state following a disaster

  To allow restoring a small number of files after they have been accidentally deleted or corrupted

  To copy or transfer data from a storage system to another storage system

  To save files and records for permanent or long-term preservation

3. What is an incremental backup?

  A backup off all data on the target volumes

  A backup that contains only changes since the last full backup

  A backup that contains only changes since the most recent backup

  A backup that contains only changes since the most recent backup of a lower level

4. Suppose you have defined a backup policy to run daily and take full backups every Monday and cumulative backups on the remaining weekdays. In case of a disaster on a Friday, how many backup sets will be required to perform a full recovery?

  1

  2

  3

  4

5. What is Recovery Point Objective (RPO)?

  A point in time to which application data must be recovered in order to resume business transactions

  The length of time that a particular backup set is retained on tape before it is overwritten by a new backup set

  The length of time that the backup software prevents the overwriting of a tape

  The maximum allowable time to bring the application back online

Backup Overview

6. An automated tape library is an example of which storage method?

  Near-line storage

  Off-site vault

  Offline storage

  Online storage

Backup Architecture

7. What applies to a backup server exclusively?

  It controls the robotic arm in a tape library

  It gathers data for backup

  It owns the backup catalog

  It writes the backup image to the backup device

8. What is a feature of direct-attached backups?

  Backup performance is reduced

  It has minimum impact on host and application performance

  It imposes distance restrictions

  Tape devices can be easily shared among backup hosts

9. What is a characteristic of SA backups?

  Does not require a LAN infrastructure

  Eliminates or reduces dedicated backup servers

  Increases the overhead associate with backups

  Reduces backup and restore performance

10. What is the benefit of LAN backups?

  Applications don’t need to be halted during LAN backup

  LAN backup does not have an impact on production systems

  Tape devices can be easily shared among backup hosts

  The backup server is the central point for all backups

Backup Terminology and Considerations

11. Which statement about Backup Staging is correct?

  Staging helps to reduce the backup window

  Staging is normally used with off-site vaulting policies

  Staging is the process of copying data from a storage media to another

  The performance of a backup is not affected by staging

12. Which statement describes NDMP?

  It isn’t possible to restore single files when using NDMP, as all backups are performed at the logical block level

  NDMP backup is completely LAN free

  NDMP backup can occur locally, from the file server directly to the tape drive

  NDMP backup requires a special agent to be installed on the file server