Millions of pounds' worth of damage _____ by a storm which swept across the north of England last nigh A. has been caused B. had been caused C. will be caused D. will have been caused
【简答题】假定提供Web服务的两台Linux服务器IP地址分别为192.168.1.10和192.168.1.20。为了使用DNS循环机制,由主机名www.test.com对外提供一致的服务,需要在DNS服务器的test.com区域文件中增加下列内容: www1 IN (8) 192.168.1.10 www2 IN (8) 192.168.1.20 www IN (9) www1 www IN (9) w...