PAAS provides an application development and operating environment, including a database of middleware.
The software below the server upper layer belongs to the PAAS layer.

• A.CRM (SAAS)
• B.JAVA
• C.KVM(LAAS)
• D.MYSQL

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The following description of the characteristics of CLOUDSTACK is correct.

• A.CLOUDSTACK is an open source database software
• B.CLOUSTACK can deploy new services on an unlimited scale and faster
• C.CLOUDSTACK can help users better coordinate server, storage, and network resources to build a LAAS platform

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The general server is based on the PC architecture, using inter or other X86 instruction set compatible processor chips and linux and windows operating system servers. The price is cheap, the compatibility is good, the stability is poor, the security is not too high, mainly Used in SMEs and non-critical business.

• A.FALSE
• B.TRUE

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The following understanding of the characteristics of the server is incorrect.

• A.Ease of use refers to the ability to quickly locate and repair after a system failure
• B.The core guiding concept of RAS design is to ensure the sustainable and normal operation of customer business to the greatest extent
• C.Usability refers to the ability of the product to maintain all its functions as long as possible for as long as possible
• D.Reliability refers to the ability of the product to maintain all its functions for a long period of time.

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The following is the correct comparison of UDIMM, RDIMM, LRDIMM.

• A.UDIHM
• B.UDIMM,
• C.Compared with RDIMM and LRDIMM, the load and power consumption of the memory bus are reduced, and the maximum supported capacity of the memory is also provided.
• D.0 RDIMM support

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