Which of the following is the upstream of the computing industry chain?

• A.Big data
• B.Cloud computing
• C.Blockchain
• D.Chip manufacturing

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A certain office purchases a batch of TaiShan servers to expand the existing distributed storage Ceph. The Ceph storage cluster receives files from the client and stores them (the entire process of the OSD node in the order of File>object mapping, Object->PG mapping and PG>OSD mapping to achieve device data storage).

• A.False
• B.True

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Which of the following is correct about the characteristics of heterogeneous computing? (Multiple choice)

• A.GPU and CPU can work together to form a future computing system. The advantage of heterogeneous computing is computing acceleration and energy saving. Cooperative work can form a heterogeneous computing system. The advantage of heterogeneous computing is computing acceleration and energy saving.
• B.Common heterogeneous systems are CPU+GPU, GPU+FPGA, CPU+ special chip.
• C.Heterogeneous computing is to develop a series of software and hardware standards so that different types of computing devices can share the process and results of computing.
• D.The purpose of heterogeneous computing is to solve the problem of insufficient CPU computing power.

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The read and write performance of RAID0 is very high, but the reliability is relatively low, and the hard disk utilization is not high, so it is not recommended to use it alone.

• A.False
• B.True

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Which of the following is wrong about engineer A's understanding of LVS load balancing technology?

• A.In the LVS/DR mode, the scheduler dynamically selects a server according to the load conditions of each server without modifying or encapsulating IP packets, but changing the MAC address of the data frame to the MAC address of the selected server.
• B.LVS/NAT is the simplest way, so RealServer only needs to point its own gateway to Director, and Director can also be a RealServer
• C.The advantage of LVS/DR is that the server can run any operating system that supports TCP/IP, it only needs an IP address to be configured on the scheduler, and the server group can use private IP addresses.
• D.In the LVS/DR mode, Director and RealServer must physically have a network card connected through an uninterrupted LAN.

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