Which statement is true?

• A.An extent can be 128 MB, but a grain is always 64 kB.
• B.An extent can be as small as 64 MB and as large as 512 MB.
• C.An extent can be as small as 512 kB and as large as 128 MB.
• D.An extent can be as small as 512 kB and as large as 64 MB.

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In a traditional RAID group, when a certain number of hard drives fail, the entire RAID group can prevent data loss, and The data recovery process has not been started. What is the status?

• A.Downgrade
• B.invalid
• C.Normal work
• D.Refactoring

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Which of the following statements about pre-copy is incorrect?

• A.Pre-copy greatly reduces the risk of data loss.
• B.Pre-copy requires hot spare disks.
• C.Data to be pre-copied must be reconstructed and calculated.
• D.Pre-copy is the process of copying data from a failing member disk to a hot spare disk.

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In a NAS environment entire files are sent across the ethernet based network. The NAS server however stores these files in the form as SCSI blocks mostly on multiple disks using RAID protection.

• A.TRUE
• B.FALSE

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Statement 1: NAS systems must be interconnected using fiber optic cables.
Statement 2: A network protocol is the way in which an operating system accesses a file that is on a network connected device.

• A.Statements 1 and 2 are both true.
• B.Both statements 1 and 2 are false.
• C.Statement 1 is true and statement 2 is false.
• D.Statement 1 is false and statement 2 is true.

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