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[ 单选题 ] (5.0分) 未指定技能

A. 先假定Web页面只包含一个对象,即由少量的HTML文本组成(即Web页面只包含一个HTML基本对象,而它不包含其他引用对象)。令RTT0表示本地主机和包含对象的服务器之间的RTT值。假定该对象传输时间为零,则从客户点击该超链接到它接收到该对象需要多长时间?· A RTT1+RTT2+...+RTTn+RTT0·
B. RTT1+RTT2+...+RTTn+2RTT0·
C. RTT1+RTT2+...+RTTn+3RTT0·
D. RTT1+RTT2+...+RTTn+4RTT0

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