An Internet company purchased a batch of TaiShan servers to expand the previously built distributed storage Ceph resource pool. In order to ensure data consistency. The OSD compares the metadata of each object copy located in different OSDs in the placement group. If you need to capture OSD defects and file system errors, you can perform a cleaning operation.

• A.True
• B.False

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The frequency of the CPU includes main frequency, external frequency, bus frequency and multiplier. Which of the following statements about multiplier is incorrect?

• A.Under the same FSB, the higher the multiplier, the higher the CPU frequency, without limitation
• B.The data transmission speed between the CPU and the system is limited, and a CPU that blindly pursues the main frequency and obtains a high multiplier will have an obvious bottleneck effect.
• C.Normally, when PC is overclocking, the multiplier is adjusted to unlock the CPU. The overclocking method of adjusting the multiplier is more determined than adjusting the external frequency.
• D.The multiplication factor refers to the relative proportional relationship between the CPU's main frequency and the external frequency.

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What is customer-oriented logical level software, such as ERP, CRM, HR, etc.?

• A.Database software
• B.Application software
• C.Middleware
• D.Business application layer software

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A system constructed by one or several general computing units plus one or several dedicated computing units is a heterogeneous computing system, and the calculation method for a heterogeneous computing system to perform general tasks is heterogeneous computing.

• A.True
• B.False

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Microprocessor commonly used instruction sets include simplified instruction set, complex instruction set, display parallel instruction set, etc. Which of the following statements about instruction set is correct? (Multiple choice)

• A.Ultra-long instruction set puts multiple instructions into one instruction word, which effectively improves the utilization efficiency of each computing function component of the CPU and improves the performance of the program.
• B.In a complex instruction set microprocessor, each instruction of the program is executed serially in order, and each operation in each instruction is also executed serially in order.
• C.Simplified instruction set has simplified the number of instructions and addressing methods to make it easier to implement, the degree of parallel execution of instructions is better, and the efficiency of the compiler is higher.
• D.Displaying parallel instructions allows the processor to execute instructions in parallel according to the compiled schedule without increasing hardware complexity. The architecture is developed from the ultra-long instruction set architecture and has been greatly improved.

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