Company A has purchased a batch of Taishan servers to build a Web system. Which of the following software can provide Webserver functions? (Multiple choice)

• A.Memcached
• B.Nginx
• C.LVS
• D.Apache

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SSD solid state drives can be divided into SLC, MLC, TLC according to the particles. Which of the following statements about these three particles is correct?

• A.SLC using both positive and negative charges, a floating gate memory 1 bit of information, the MLC using charges of different potentials. 1 floating gate memory 2 bit of information, TLC using charges of different potentials. 1 floating gate memory 6 bit of information.
• B.Although the storage capacity of TLC chips has increased, the cost is much lower, but because the performance is also greatly reduced, it can only be used in low-end NANDFlashx related products.
• C.The capacity of MLC is double of SLC, life is also doubled.
• D.The capacity of TLC is 3 times of MLC, but it is the shortest life.

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Puppet and Ansible are both automated operation and maintenance management tools. Which one is wrong about the understanding of the two operation and maintenance management tools?

• A.The resource types that Puppet can support include files, installation packages, scheduled tasks, user management, etc.
• B.The biggest feature of Ansible is that there is no need to install an agent on the docking device.
• C.Ansible is written in Python and uses SSH keys for authentication by default.
• D.Compared with Ansible, Puppet remote host does not require a client.

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When building a software-defined storage resource pool with a server, software-defined storage products will be selected. Which of the following types of software-defined storage products are generally divided into? (multiple choice)

• A.In-band storage management
• B.Hyper-converged architecture
• C.Out-of-band storage management
• D.Distributed storage (block/file object)

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Which of the following statement about the CISC instruction set is wrong?

• A.CISC microprocessor has a complex structure, powerful functions, and easy realization of special functions.
• B.Both the CISC instruction set and the RISC instruction set are von Neumann structures.
• C.The instruction system is huge, with many instruction formats and addressing modes
• D.About 20% of the instructions in the CISC command system account for 80% of the processing time

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