For random access to mechanical disks, the most significant impact on the time it takes to complete an IO is:

• A.Seeking time
• B.Data transfer time
• C.Rotation delay

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What are the three data centers in the disaster recovery plan that 3DC refers to? (Multiple choices)

• A.Production center
• B.The same city disaster recovery center
• C.Remote disaster recovery center
• D.Data center

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What is wrong with the following description of NAS? (Multiple choice)

• A.NAS provides a centralized management console, which can effectively manage the file system
• B.NAS devices can use cluster technology for failover
• C.A client cannot connect to multiple NAS devices at the same time
• D.Do not allow the NAS to be accessed by multiple clients at the same time

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

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The steps of asynchronous remote replication multi-point technology, is the following statement correct?
(1) A new time slice (T2, P2) is generated in the cache of the master LUN and the slave LUN at the start of each replication cycle (2) The newly written data of the host is cached in the time slice T2 of the main LUN Cache, responding to the completion of the host (3) The master and slave LUNs each release the received data (4) Copy the data of time slice T1 directly to the slave LUN and write it to the time slice P2 of the slave LUN

• A.(1) (2) (4) (3)
• B.(2) (1) (4) (3)
• C.(1) (3) (2) (4)
• D.(1) (2) (3) (4)

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