现企业要将一个已运行Windows2000Server的DHCP服务器迁至另一台装有同样操作系统的高性能服务器上，那么他需要做的操作是（）
A.在旧的DHCP服务器上将DHCP服务器数据库备份
B.立即停止旧服务器上的DHCP服务停止
C.在旧的DHCP服务器上禁用DHCP服务
D.将备份的数据库文件拷贝到新的DHCP服务器内
参考答案：A, B, C, D
| Observe that for the programmer，as for the chef,the urgency of the patron(顾客) may govern the scheduled completion of the task，but it cannot govern the actual completion．An omelette(煎鸡蛋)，promised in two minutes，may appear to be progressing nicely．But when it has not set in two minutes，the customer has two choices—waits or eats it raw．Software customers have had (71) choices． Now I do not think software (72) have less inherent courage and firmness than chefs，nor than other engineering managers．But false (73) to match the patron’s desired date is much more common in our discipline than elsewhere in engineering．It is very (74) to make a vigorous，plausible，and job risking defense of an estimate that is derived by no quantitative method，supported by little data，and certified chiefly by the hunches of the managers． Clearly two solutions are needed．We need to develop and publicize productivity figures，bug-incidence figures，estimating rules，and so on．The whole profession can only profit from (75) such data．Until estimating is on a sounder basis，individual managers will need to stiffen their backbones and defend their estimates with the assurance that their poor hunches are better than wish derived estimates． |
A．tasks
B．jobs
C．works
D．scheduling