大学MOOC Embedded Software Design(Dalian University of Technology)1458265161 最新慕课完整章节测试答案
1. Overview
文章目录
- 1. Overview
- 10. Interprocess communication
- 11. Sockets
- 12. Module and Driver and the Example of Driver
- 2. Overview of Embedded C Programming
- 3. ARM C Program Optimization
- 4. The Linux Operating System
- 5. Linux C Programming Toolchain and Makefile
- 6. Construction of Embedded Software Platform
- 7. File Directory and Memory
- 8. Processes and Threads
- 9. Signals
Objective questions
1、单选题：
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、单选题：
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、单选题：
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、单选题：
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、单选题：
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】
10. Interprocess communication
Objective questions
1、单选题：
Which of the following is not IPC mode()
选项：
A: Semaphore
B: Signal
C: Shared memory
D: Message queue
答案: 【 Signal】
2、单选题：
Which of the following is correct about the description of the pipe()
选项：
A: Pipe is full duplex work.
B: Pipe is simplex work.
C: Nameless pipes can communicate between unrelated processes.
D: A named pipe exists in the file system.
答案: 【 A named pipe exists in the file system.】
3、单选题：
Which of the following is wrong about the description of the semaphore()
选项：
A: It is divided into binary semaphore and universal semaphore.
B: Semaphores can be replaced by ordinary variables.
C: Semaphores are used to protect critical areas.
D: Semaphores belong to interprocess communication.
答案: 【 Semaphores can be replaced by ordinary variables.】
4、单选题：
Which of the following functions links the Shared memory to the process address space()
选项：
A: shmat()
B: shmdt()
C: shmctl
D: shmget
答案: 【 shmat()】
5、单选题：
Which of the following functions can delete the message queue()
选项：
A: msgget()
B: msgsnd()
C: msgrcv()
D: msgctl
答案: 【 msgctl】
11. Sockets
Objective questions
1、单选题：
Which of the following is correct about the description of the socket()
选项：
A: Sockets belong to the inter-process communication mode.
B: Sockets are used in the same way as pipes.
C: Sockets can only be used between different machines on the network.
D: Sockets can only be used on UNIX/Linux hosts.
答案: 【 Sockets belong to the inter-process communication mode.】
2、单选题：
Which of the following functions is not a server-side socket function()
选项：
A: bind()
B: listen()
C: accetp()
D: connect()
答案: 【 connect()】
3、单选题：
Which of the following uniquely identifies a network socket()
选项：
A: The file name
B: The IP address
C: The port number
D: IP address and port number
答案: 【 IP address and port number】
4、单选题：
The IP address of the loopback network is()
选项：
A: 192.168.0.0
B: 192.168.0.1
C: 127.0.0.0
D: 127.0.0.1
答案: 【 127.0.0.1】
5、单选题：
On the accept() system call, the error is()
选项：
A: The server through it waits for the client to make a connection to the socket.
B: The accept function returns only when a client tries to connect to a socket specified by the socket argument, otherwise it will remain blocked.
C: The accept function creates a new socket to communicate with the customer.
D: Accept returns a descriptor for the new socket, which is of a different type than the server listening socket.
答案: 【 Accept returns a descriptor for the new socket, which is of a different type than the server listening socket.】
12. Module and Driver and the Example of Driver
Section 12-1 Objective questions
1、单选题：
Which of the following is correct about the description of the kernel module()
选项：
A: A module is a program that can be executed independently.
B: Once a module is linked to the kernel, it is fully equivalent to the original code in the kernel.
C: Once a module is loaded into the kernel, it cannot be unloaded.
D: The module runs in user space.
答案: 【 Once a module is linked to the kernel, it is fully equivalent to the original code in the kernel.】
2、单选题：
Which of the following commands inserts a module into the kernel()
选项：
A: insmod
B: lsmod
C: rmmod
D: depmod
答案: 【 insmod】
3、单选题：
Which of the following is wrong about the description of the function of the module()
选项：
A: You can insert a module into the kernel with parameters.
B: Kernel functionality can be extended through modules.
C: Linux kernel modules must comply with the GPL license.
D: After the module is inserted into the kernel, symbols can be exported for use by other modules.
答案: 【 Linux kernel modules must comply with the GPL license.】
4、单选题：
Which of the following is wrong about the description of Linux driver()
选项：
A: The driver must be inserted into the system using dynamic module loading.
B: The driver belongs to the kernel code.
C: A driver is a collection of functions and data structures.
D: The driver is used to control the hardware device.
答案: 【 The driver must be inserted into the system using dynamic module loading.】
5、单选题：
Linux devices do not include which o