007[1].威盛的software_test_e.txt

总结了一些软硬件方面的笔试面试题

1.What is OSI Model?Which layer is responsible for the information reliable
  delivery?
2.List the differences of TCP and UDP
3.Please list the differences between convertional C language and
  object-oriented language(OOL),sau C++?
4.Please list the three major features and meanings of C++
5.Please list the program areas of the run time environment and give a brief
  explanation of the function of each area
6.Write a piece of code(or macro)to convert the decimal number to hex format
7.In a real time operating based embedded system,2 tasks will access the
  RS-232C port.Design a mutual exclusive mechanism for tasks sending command
  string to the device.
  (Pseudo code is okay)
8.A multi-task application is running on top of a real-time operating system,
  how many possbile states can a task have?Please draw a state transition
  diagram to explain. How the tasks communicate to each?