Regarding the new era of ICT and technology, which of the following statements is correct? (Multiple choice)

• A.social media is a virtual community and network platform that people use to create, share, and exchange opinions, opinions and experiences
• B.In the new ICT era, ICT systems migrate from support systems to production systems
• C.CPS (Cyber Phsical System) includes system engineering such as ubiquitous environment perception, embedded computing, network communication and network control in the future. It is a physical system with functions of computing, communication, precise control, remote collaboration and autonomy.
• D.Cloud computing is an increase, use and delivery model of Internet-based related services, usually involving the provision of dynamic, easy-scalable and often virtualized resources through the Internet

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Extent is the logical storage space divided on the basis of CKG. It is the smallest unit of hot data statistics. The extent size in the same storage pool can be different.

• A.True
• B.False

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When the RPO time requirement is at the minute level, the traditional tape backup method can be used.

• A.False
• B.True

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One port of a host connected to the switch cannot belong to multiple zones, but can only be divided into one zone.

• A.True
• B.False

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RAID 2.0+, which of the following is correct?

• A.The size of the chunk and SATA/NL-SAS is a fixed size of 64MB
• B.It is the largest unit that applies for and releases space in the storage pool.
• C.The extent size of different storage pools can be different, but the extent size in the same storage pool is the same.
• D.The size of the chunk and SAS/SSD is a fixed size of 256MB

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