A. self
B. trust
C. untrust
D. junos-global
第1题:
Giventhisfragmentinaservlet:23.if(req.isUserInRole("Admin")){24.//dostuff25.}AndthefollowingfragmentfromtherelatedJavaEEdeploymentdescriptor:812.<security-role-ref>813.<role-name>Admin</role-name>814.<role-link>Administrator</role-link>815.</security-role-ref>900.<security-role>901.<role-name>Admin</role-name>902.<role-name>Administrator</role-name>903.</security-role>Whatistheresult?()
A.Line24canneverbereached.
B.ThedeploymentdescriptorisNOTvalid.
C.Ifline24executes,theuser’srolewillbeAdmin.
D.Ifline24executes,theuser’srolewillbeAdministrator.
E.Ifline24executestheuser’srolewillNOTbepredictable.
第2题:
A. LOG_HISTORY
B. JOB_LOG_RETENTION
C. WINDOW_LOG_RETENTION
D. WHICH_LOG
E. LOG_NAME
第3题:
有两组样本x=[35,37,36,38,45,40,44], y=[37,39,32,40,43,44,41],两者之间是否存在显著差异:
A.不存在显著差异,significance=0.9474
B.不存在显著差异,significance=0.5474
C.存在显著差异,significance=0.9474
D.存在显著差异,significance=0.5474
第4题:
A.EXECUTEDBMS_SCHEDULER.PURGE_LOG(log_history=>5,job_name=>’JOB1’);
B.EXECUTEDBMS_SCHEDULER.PURGE_LOG(log_history=>5,job_name=>’JOB_LOG’);
C.EXECUTEDBMS_SCHEDULER.PURGE_LOG(log_history=>5,which_log=>’JOB1’);
D.EXECUTEDBMS_SCHEDULER.PURGE_LOG(log_history=>5,which_log=>’JOB_LOG’);
第5题:
【单选题】(5-1)()可以获得操作系统名称。
A.System.getProperty("java.version")
B.System.getProperty("os.arch")
C.System.getProperty("java.home")
D.System.getProperty("os.name")