Which of the following occurs after multipathing software is installed on a host? (Choose all that apply.)

• A.Sets up connection between a storage device and the host.
• B.Maps a LUN to the host.
• C.Avoids logical errors from occurring in the operating system as a result of multiple reachable paths to the same LUN.
• D.Improves link reliability and prevents the failure of a single link from causing a system failure.

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Match the RAID level with the characteristics. (1) RAID 0 (2) RAID 5 (3) RAID 10 (4) RAID 6 (a) Cost effective (b) Allows double disk failure (c) Highest performance (d) No data protection

• A.1-d; 2-a; 3-c; 4-b
• B.1-d; 2-a; 3-b; 4-c
• C.1-a; 2-d; 3-b; 4-c
• D.1-a; 2-b; 3-c; 4-d

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Which of the following is NOT the characteristics of the active-active mode of a storage controller?

• A.If a controller becomes faulty, the other takes over the work of the faulty controller without disrupting ongoing services.
• B.The active-active mode achieves load balancing, full utilization of resources, and system performance improvement.
• C.Two controllers process the I/O requests from application servers concurrently.
• D.The primary controller processes the I/O requests from application servers and the secondary controller is in the idle state.

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If the disaster recovery center in the same city fails, the production center in cascading networking mode will lose all its backup sites.

• A.FALSE
• B.TRUE

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Statement 1: NAS solutions are always file based.
Statement 2: NAS solutions are mostly limited in distance because Ethernet cables are used.

• A.Statement 1 and 2 are true.
• B.Statement 1 is false; Statement 2 is true.
• C.Statement 1 is true; Statement 2 is false.
• D.Statement 1 and 2 are false.

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