From Android development to winning CCIE, my WOLF-LAB exam preparation experience

Before learning about the Internet, I have been engaged in Android development-related work. I usually have more contact with Java, Kotlin, App development and project function implementation. Although it also belongs to the IT industry, it is still very different from the network direction. After working for several years, I feel more and more that technology cannot be limited to one direction. Nowadays, many systems cannot be separated from the network. Some problems encountered in the development process will eventually involve servers, network communication, security policies and other contents. In order to broaden my technical direction and learn network knowledge systematically, I began to understand CCIE.

The first time I came into contact with WOLF-LAB was when I saw students sharing their learning experience and exam results on Xiaohongshu. Later, I read a lot of relevant content and consulted some questions about courses and exam preparation. After comprehensive comparison, I felt that the curriculum arrangement of WOLF-LAB, the teacher's teaching method and the experimental environment were more suitable for me, so I decided to start studying here. When I first started learning, it was really not easy. Because I used to do Android development, I am not familiar with many network protocols and device configurations. Some contents feel understood in class, but when you actually operate on the rack, you will still encounter many problems. Especially at the beginning of the experiment, the command is not familiar and the configuration order is easy to make mistakes. Sometimes just one command is missing, or a parameter is written incorrectly, which will lead to the whole result incorrectly. In this case, you can only check the configuration little by little, re-understand the principle, and then continue to investigate. However, with the progress of the course and continuous practice, you can gradually find some feelings. The teacher's lecture will not only tell us how to configure it, but also explain why we should configure it in this way and where to start checking after problems occur. This is still very important for people like me who didn't have much Internet foundation before.

During the whole preparation period, WOLF-LAB provided exactly the same rack as the exam. Judging from my actual use, the number of racks is sufficient. As long as you arrange the time in advance, the usual practice and pre-exam sprint can be fully satisfied. I think rack practice is a very important part of the whole preparation process. It is not enough to only read the course or only memorice commands for a lot of knowledge. It must be really operated on the machine. Only when you do it completely by yourself can you know which parts are not understood, which commands are not familiar, and which problems are easy to ignore. At the beginning, the speed of making the rack was very slow, and there was often a problem stuck for a long time. Sometimes I check it many times, but I can't find the problem. Later, I practiced more times, and I gradually became familiar with the structure and configuration logic of the questions, and I also had more ideas than before. In the process of practice, I will record where I often make mistakes, such as which knowledge points are easy to confuse, which configurations are easy to omit, and what order should be checked after a failure. When reviewing later, focus on these contents. This is more effective than simply repeating the questions.

When the exam is approaching, I am still nervous. On the one hand, I am worried that I am not fully prepared, and on the other hand, I am also worried that there will be some problems that I have not encountered during the exam. Before the exam, the teacher helped me analyze the key points according to my practice, and also reminded me of the schedule and operation details during the exam. The teacher is more patient with the questions I asked. I may have asked some questions before, but when I'm not sure again, the teacher will help me analyze them again. In addition to technical guidance, the teacher will also remind me not to delay too long on a problem, to ensure the overall progress first, and then check it later. These suggestions seem simple at ordinary times, but they are still very helpful after actually entering the exam.

At the moment when the exam was over, the most obvious feeling was that I could finally breathe a sigh of relief. The whole preparation process for the exam has not always been smooth. In the middle, there were times when I couldn't do the problem, repeatedly reported errors in the configuration, and felt that my progress was slow. Especially from Android development to the direction of the network, a lot of knowledge needs to be learned again, and there will indeed be some discomfort at the beginning. But after sticking to it, looking back, you will find that you have been unfamiliar with the network configuration from the beginning, and later you can independently complete experiments, analyze problems and make errors. The improvement brought by this process is not only to get a certificate, but also to give me a more systematic understanding of network technology. Through this study, I also became more aware that CCIE is just a stage result, not the end of learning. The certificate can prove the efforts during this period, but when it comes to work in the future, we still need to continue to learn and accumulate practical experience.

Finally, I would like to thank the teachers of WOLF-LAB for their help during the study and preparation for the exam. From course learning, rack practice to pre-examination guidance, the teacher has given me a lot of support. I also want to say to students who are preparing for the exam or preparing to study CCIE that it doesn't matter much if the foundation is different. I used to do Android development, and the network foundation was not good at the beginning. As long as you study hard according to the curriculum, practice more on the computer, and summarize in time when you encounter problems, you will gradually make progress. This experience of preparing for the exam was very hard, but the result also proved that the previous efforts were not in vain. Next, I will continue to study and really apply the knowledge I have learned to work and projects.