Incremental backups must rely on the last full backup and the last incremental backup to perform data recovery Complete recovery, data reconstruction during recovery is slower than full backup, and recovery window is larger.

• A.TRUE
• B.FALSE

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Select the correct statements that describes Mean Time Between Failure(MTBF).
(Multiple Choice)

• A.MTBF is the predicted elapsed time between inherent failures of hard disks.
• B.MTBF is used to measure the reliability of hard disks.
• C.MTBF can accurately pinpoint the time of failures of the hard disks.
• D.The higher the MTBF, the hard disk will have shorter lifespan expectancy,

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There are two descriptions about backups, the correct ones are:
Description 1: The disaster recovery solution does not need to consider whether it is backed up on tape or hard disk.
Description 2: The backup plan should consider the worst case.

• A.Description 1 is right, description 2 is wrong
  C, description 1 is wrong, description 2 is right
• B.Descriptions 1 and 2 are wrong
• C.Descriptions 1 and 2 are both correct

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What are the main elements of the disaster recovery system? (Multiple choice)

• A.RPO
• B.backup capacity
• C.RTO
• D.Backup window

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A device can have one WWPN but multiple WWNN's.

• A.TRUE
• B.FALSE

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