The system administrator A wants to use the vmstat command to view the active memory and inactive memory of EulerOS. Which of the following commands can achieve this purpose?

• A.vmstat -d
• B.vmstat -f
• C.vmstat -a
• D.vmstat -s

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Hot spare means that when a hard disk in a redundant RAID group fails, without interfering with the normal use of the current RAID system, another normal spare hard disk in the RAID system is used to automatically replace the failed hard disk to ensure the RAID system in time the redundancy.

• A.False
• B.True

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EulerOS is an operating system developed based on a stable system kernel. It has high security features. Which of the following are EulerOS security reinforcement methods? (Multiple choice)

• A.Provide system operation authentication mechanism.
• B.Provide OpenSCAP/TPM-tools security.
• C.Reinforce corresponding security through SEK.
• D.Adopt the industry's mainstream SElinux security framework and provide security configuration strategies.

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TaiShan server uses Huawei Kunpeng processor to realize the integration of "calculation, storage, transmission, management, and intelligence". Which of the following chip technology is applied on the "transmission"?

• A.Smart network card chip
• B.Intelligent management chip
• C.rising Ascend 310 chips.
• D.SSD controller chip

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What is the correct statement about data routing and cluster management in the Huawei Fusionstorage architecture? (Multiple choice)

• A.When the system starts, MDC and ZK interact to determine MC, and the main MDC and other MDCs monitor each other's heartbeats. The master MDC decides who will take over after a certain MDC fails. Other MDC found that the main MDC was faulty and interacted with zk as the main MDC.
• B.When the OSD starts, it queries the MDC from the MDC, reports the status to the home MDC, and the home MDC sends the status change to the VBS. When the home MDC fails, the master MDC designates one MDC to take over, and at most two pools belong to one MDC.
• C.Query the main MDC when VBS starts and register with the main MDC.
• D.When the distributed storage system is created, N Partitions are generated in the space of 2 to the 32th power, and the backup OSD starting write data corresponding to the Partition is generated according to the distribution of the disk.
• E.Distributed storage system writes data. According to the LBA from the application layer and the block size, the VBS generates multiple Keys in units of 1MB, hashes the Keys into Partition IDs, and then follows up the Partition to find the main OSD, and the main OSD notifies the partition corresponding to the OSD to start writing data.

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