> For the complete documentation index, see [llms.txt](https://coffe1891.gitbook.io/frontend-hard-mode-interview/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://coffe1891.gitbook.io/frontend-hard-mode-interview/id-1/5.-xiang-guan-hou-duan-zhi-shi-tong-xin-xie-yi-an-quan.md).

# 5.相关后端知识、通信协议、安全

- [壹.5.2 了解TCP、UDP、TLS](https://coffe1891.gitbook.io/frontend-hard-mode-interview/id-1/5.-xiang-guan-hou-duan-zhi-shi-tong-xin-xie-yi-an-quan/1.5.2.md)
- [壹.5.3 HTTP几个版本的区别](https://coffe1891.gitbook.io/frontend-hard-mode-interview/id-1/5.-xiang-guan-hou-duan-zhi-shi-tong-xin-xie-yi-an-quan/1.5.3.md)
- [壹.5.4 HTTP和HTTPS的区别在哪里](https://coffe1891.gitbook.io/frontend-hard-mode-interview/id-1/5.-xiang-guan-hou-duan-zhi-shi-tong-xin-xie-yi-an-quan/1.5.4.md)
- [壹.5.5 XSS与CSRF攻击](https://coffe1891.gitbook.io/frontend-hard-mode-interview/id-1/5.-xiang-guan-hou-duan-zhi-shi-tong-xin-xie-yi-an-quan/1.5.5.md)