Xu Haifeng, a sharpshooter, was the first gold medal winner in Chinese Olympic history.
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In 2001, Beijing made the Olympic bid for the 2012 Olympic Games and won the right to host the 29th Olympic Games.
A. 对
B. 错
IP地址块210.161.111.1/22和201.21.151.1/21的子网掩码分别可写为
A. 255.255.252.0和255.255.248.0
B. 255.255.248.0和255.255.240.0
C. 255.255.254.0和255.255.252.0
D. 255.255.255.0和255.255.254.0
下面选项哪个不是TCP拥塞控制的算法
A. 慢开始
B. 拥塞控制
C. 快恢复
D. 快重传
TCP连接建立的过程中，如果第一次握手的序号为seq=x,那么第二次握手的确认号ack是什么？
A. x
B. x+1
C. x-1
D. 1
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