2020 Embedded Software Design(Dalian University of Technology) 最新满分章节测试答案

本答案对应课程为:点我自动跳转查看
本课程起止时间为:2020-09-14到2021-02-02
本篇答案更新状态:已完结

1. Overview Objective questions

1、 问题:Which of the following is wrong about the description of embedded system  ()
选项：
A:It can solve certain problems.
B:It is no different from general-purpose computers in the nature of technology.
C:It has more powerful functions than general-purpose computers.
D:It has strict requirements on volume, power consumption, reliability and cost.
答案: 【It has more powerful functions than general-purpose computers.】

2、 问题:Which of the following is not an inherent part of an embedded system ()
选项：
A:Processor
B:Peripheral circuit
C:Embedded operating system
D:Embedded application software
答案: 【Embedded operating system】

3、 问题:Which of the following programming languages has the highest execution efficiency()
选项：
A:Assembly language
B:C language
C:C++ language
D:JAVA language
答案: 【Assembly language】

4、 问题:Which is the advantage of using embedded operating system()
选项：
A:The system runs faster
B:The system has higher execution efficiency
C:Application softwares run faster
D:Programmers can focus on problems
答案: 【Programmers can focus on problems】

5、 问题:Directly for hardware programming, can’t ()
选项：
A:Access processor’s registers
B:Control the working mode and process of the hardware
C:Using the scheduling mechanism of operating system
D:Read-write memory
答案: 【Using the scheduling mechanism of operating system】

2. Overview of Embedded C Programming Objective questions

1、 问题:Which of the following is wrong about the description of the module  ()
选项：
A:The module division should conform to the principle of high cohesion and low coupling.
B:In C language, the source file and the corresponding header file form a module.
C:Global variables shared by several modules can be defined in the header files shared by these files.
D:In the embedded system, each hardware device corresponds to a module.
答案: 【Global variables shared by several modules can be defined in the header files shared by these files.】

2、 问题:Which of the following is wrong about the description of the interrupt service routine()
选项：
A:It can return the computed result to the main function.
B:It should be as short as possible to enhance the real-time of the system.
C:It should not include complex operations.
D:It cannot pass arguments.
答案: 【It can return the computed result to the main function.】

3、 问题:Which of the following is correct about the description of the interrupt model of embedded system without operating system()
选项：
A:Complete the corresponding transaction in the interrupt program.
B:Only interrupts are registered in an interrupt program.
C:When an interrupt occurs, the interrupt service routine registers the interrupt type in the stack.
D:The main function executes the actual interrupt task through infinite loop, and does not distinguish the interrupt priority.
答案: 【Only interrupts are registered in an interrupt program.】

4、 问题:When using C language to simulate object-oriented features, the correct description is ()
选项：
A:Its structure is exactly the same as the function of the class.
B:Function pointers are used to implement attribute members of a class.
C:Inheritance is implemented through struct inclusion.
D:A structure can contain member functions.
答案: 【Inheritance is implemented through struct inclusion.】

5、 问题:Which of the following is wrong about the description of the use of C language for "object-oriented programming"()
选项：
A:It can implement better program structure.
B:It can effectively organize the display of Chinese characters.
C:It can implement the function of some ‘class’.
D:It is less efficient in menu design.
答案: 【It is less efficient in menu design.】

3. ARM C Program Optimization Objective questions

1、 问题:Which of the following is wrong about the description of the program optimization of ARM C()
选项：
A:It can analyze the running time of the program.
B:It can guide assembly program design.
C:It can analyze whether the program is efficient.
D:It can guide C programming design.
答案: 【It can guide assembly program design.】

2、 问题:Which of the following is correct about the description of the data type is ()
选项：
A:Shorter data types save more storage space.
B:Try to use character variables when passing parameters.
C:It is most efficient to use integer variables.
D:Try to use a short data type in the loop to speed up execution.
答案: 【It is most efficient to use integer variables.】

3、 问题:Which of the following is correct about the description of loop optimization is ()
选项：
A:Change the loop variable by using the plus count.
B:Change the loop variable by using the minus count.
C:’while’ should be used when the number of loops is uncertain.
D:Loop unrolling can improve the quality of program.
答案: 【Change the loop variable by using the minus count.】

4、 问题:Which of the following is wrong about the description of pointer aliasing()
选项：
A:Try to avoid using pointers.
B:Using Pointers may reduce program efficiency.
C:The compiler cannot recognize the pointer aliasing.
D:When using bit fields, we should pay attention to pointer aliasing.
答案: 【Try to avoid using pointers.】

5、 问题:Which of the following is wrong about the description of the struct()
选项：
A:In a struct, short members are defined first and long members are defined later.
B:Struct members should be boundary aligned as much as possible.
C:Array elements should be placed at the end of the struct.
D:__packet keyword can improve the access speed of the struct.
答案: 【__packet keyword can improve the access speed of the struct.】

4. The Linux Operating System Objective questions

1、 问题:The characteristics of Linux do not include()
选项：
A:Micro kernel.
B:Meet the POSIX standard.
C:It can run on the server.
D:It can run on embedded devices.
答案: 【Micro kernel.】

2、 问题:Which of the following is not a feature of ‘shell’ ()
选项：
A:It’s a low-level interface to the operating system.
B:You can type shell commands from the console.
C:You can write shell scripts.
D:Linux supports multiple ‘shell’.
答案: 【It’s a low-level interface to the operating system.】

3、 问题:Which of the following ‘shell’ environment variables identifies the system executable file path ()
选项：
A:HOME
B:PATH
C:TERM
D:PWD
答案: 【PATH】

4、 问题:Which of the following paths holds all the device files of the system ()
选项：
A:bin
B:dev
C:lib
D:root
答案: 【dev】

5、 问题:Which of the following commands is used to view the current process of the system ()
选项：
A:rm
B:touch
C:mkdir
D:ps
答案: 【ps】

6、 问题:Which of the following commands is used to configure the IP address of network card()
选项：
A:ping
B:telnet
C:ifconfig
D:ftp
答案: 【ifconfig】

5. Linux C Programming Toolchain and Makefile Section 5-1 Objective questions

1、 问题:What are the features of the cross compiler()
选项：
A:The compiler runs on the host machine, and compiler results also run on the host machine.
B:The compiler runs on the target machine, and compiler results also run on the target machine.
C:The compiler runs on the host machine, and compiler results run on the target machine.
D:The compiler runs on the target machine, and compiler results run on the host machine.

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