When preparing for the exam, candidates should review the exam syllabus and exam requirements. They should mainly pay attention to the following aspects:

1, have a firm and clear grasp of basic knowledge and theories.

The "Level 2" exam focuses on practical applications and operations, but its prerequisite is the mastery of basic knowledge points. Specifically, there are three points: First, pay attention to summary during the review process, especially for some knowledge points with complex relationships. It is difficult to understand and remember without summarizing and comparing. Being good at summarizing is not only a good learning method, but also a good memory method. Some problems can only leave a clear impression and outline in the mind through comprehensive comparison, summary and refining; second, the understanding of some important concepts must be accurate, especially some easily confused concepts, such as A variety of operating methods, etc., must be accurately grasped in the review of the subtle differences between them in terms of steps and implementation; third, review each test point through associative memory. Some test points are not isolated, but connected with each other. If candidates can look from the outside to the inside, and from here to there, they can successfully find the answer.

2. The exercises you choose must be targeted, and you must not engage in "question-sea tactics".

Nowadays, there are many exercises for the Level 2 exam, so it is definitely not possible to engage in a sea of questions. Candidates should follow the exam syllabus and do some past papers appropriately when reviewing. Studying the past and understanding the present is undoubtedly an important rule and trick for passing the exam. Doing so can enable candidates to quickly become familiar with the exam question types and master the answering skills, so that they can receive the most obvious results in the shortest time. Moreover, candidates must properly classify and organize the exercises they have done, master relevant knowledge points by doing the exercises, and truly "draw inferences from one example to other cases."

3, review the written test and practice on the computer.

The best way to review the programming-related questions in the written test is to do it on a computer. Do not take it for granted when answering uncertain questions. It is best to collect this type of questions and do experiments on the computer. If the test question requires candidates to identify4Which of the results of the options is the output result of the given program segment, we can debug and run the program on the computer to see what results are obtained. In this way, we can also discover many interesting skills or experiences, which will make the candidates remember it deeply.