当Web服务器访问人数超过了设计访问人数上限时,将可能出现的状态是( )。
- A.404 Not Found,请求失败,请求所希望得到的资源在服务器上未发现
- B.200 OK,请求已成功
- C.503 Service Unavailable,由于临时的服务器维护或者过载,服务器当前无法处理请求
- D.305 Use Proxy,被请求的资源必须通过指定的代理才能被访问
正确答案及解析
正确答案
解析
本题考查访问的状态。
A、404 Not Found,请求失败,请求所希望得到的资源在服务器上未发现。表示在服务器上找寻不到资源而出现的提示。
B、200 OK,请求已成功。表示访问的页面请求成功。
C、503 Service Unavailable。由于临时的服务器维护或者过载,服务器当前无法处理请求。体现服务器拥挤人数过多,导致无法处理请求。
D、305 Use Proxy,被请求的资源必须通过指定的代理才能被访问。表示请求的资源必须经过代理才能访问。
综合分析,Web服务器访问人数超过了设计访问人数上限时,出现的是503错误,故本题选C。
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