Network administrator junior, not difficult! Network engineers are intermediate, which is more difficult! I once prepared for the network engineer exam for two months and got less than two points. Now I also work on the Internet. The key depends on your accumulated experience, which has little to do with the exam! ! If you take the exam, you can check it at the local test center, and the cost is about 100 yuan. You can prepare for the exam by buying a book of network administrators.