The following is a positive solution to the LVS+tomcat cluster model.

• A.LVS-NAT. Network Address Translation, modify the target IP of the request message
• B.LVS-TUN:
• C.Like this load scheduling technology implemented in the Liunx kernel, we call it the Linux Virtual Server (LVS)
• D.LVS-DR:

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Linux is a general term for a class of free-to-use and free-spread UNIX-like computer operating systems.
Which of the following is not an advantage of Linux.

• A.The graphical interface makes it extremely easy to use compared to other systems, greatly reducing the user's learning cost
• B.Multiple users can own and use system resources, that is, each user has specific permissions on its own resources, without affecting each other
• C.Linux has a rich set of free web server software, database and web development tools
• D.LINUX system is an open source system, which is relatively mature and has a complete set of authority mechanisms. High security and stability

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Which of the following options is not the main reason for the development of cloud computing.

• A.demand-driven
• B.Technical progress
• C.Business model transformation
• D.Global economic changes

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The three types of operating systems divided by application areas are () server operating systems and (), where server operating systems generally refer to operating systems installed on mainframe computers, such as Web servers, application servers, and database servers.

• A.Smart card operating system
• B.Open source operating system
• C.Desktop operating system
• D.Embedded operating system

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GPU is widely used in embedded systems, mobile phones, personal computers, workstations and video game solutions. What is wrong about GPU description?

• A.GPU is very efficient for image and graphics processing, because GPU is designed as a very high parallel architecture, which makes it more advantageous in parallel processing algorithms for large data blocks than general-purpose processor CPU.
• B.GPU as a general-purpose processor, taking into account both calculation and control, its processor system is SISD (Single Instruction Single Data) type
• C.GPU is mainly good at parallel computing similar to image processing, and its processor system is SIMD (Single Instruction Multiple Data) type
• D.GPU consists of thousands of smaller, more efficient cores, which are designed to handle multitasking at the same time

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