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- 如何检测SYN攻击? - 如何防御? - 什么是半连接队列? 全连接队列?
- 长短连接的好处和缺点 - 怎么实现长连接? - 为什么需要长连接? - 长连接的保活 - TCP的KeepAlive机制和HTTP的KeepAlive的区别?
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前端面试汇总-HTTP相关
一. 网络模型等基础知识
1.1 网络的五层模型
1.2 什么是三次握手和四次挥手?以及他们的作用?
1.3 为什么建立连接是三次握手,而关闭连接却是四次挥手呢?
1.4 SYN攻击是什么?
1.5 什么是长连接?为什么需要长连接?
二. HTTP、HTTPS、HTTP2
三. 网络安全
3.1 什么是跨域?
3.2 CROS预请求验证
3.3 XSS 和CROS跨域问题
3.4. 什么是内容安全策略(CSP:Content-Security-Policy)?
3.5 jsonp 的作用
3.6 fetch发送2次请求的原因?
3.7 Cookie如何防范XSS的攻击
四. 代理服务器 Nginx
15.Nginx 代理的作用?
16. Nginx 代理
五. 浏览器相关
5.1 浏览器输入URL后HTTP请求返回的过程
5.2 输入url到页面加载都发生了什么?
5.3 在使用缓存后,代码更新js资源,但是客户端没有更新,要怎么解决?
5.4 一个图片url访问后直接下载怎么实现?
六. 其它
6.1 Web Quality(无障碍)
6.2 几个很实用的BOM属性对象方法
6.3 Cookie,SessionStorage,LocalStorage的区别
6.4 Cookie,Session的区别
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