怎么准备技术面试？

Telecom technical product manager

讲以前的项目，用situation-action-results就行了

Protocols原理，优缺点，应用之类的问题怎么准备？特别不是天天用着的，比较深的。以前作ATM时找工作,人家问IPsec vs ATM. I didn't answer the question well because I had not touched IPsec for a long time. 是不是只能写下来，背一下，面试时才能对答如流？

Thanks!