Which data synchronization options between two geographical locations are supported by PowerHA SystemMirror?（） Parallel and Serial。 Serial and Asynchronous。 Parallel and Synchronous。 Synchronous and Asynchronou。
监理人员要按规定采取（）等形式，按作业程序即时跟班到位进行监督检查，对达不到质量要求的工程不得签字，并有权责令返工，有权向有关主管部门报告。 A.审批 。 B.调试 。 C.旁站 。 D.巡视 。 E.平行检验。
You have the following online redo log configuration： Group Member 1 ’/disk1/oradata/redo01a.log’ 2 ’/disk2/oradata/redo02a.log’ 3 ’/disk3/oradata/redo03a.log’ You decide to multiplex the online redo log groups for recovery of redo log files in case of any disaster. Which two statements will you NOT issue to multiplex the online redo log files？（） ALTER DATABASE ADD LOGFILE MEMBER ’/disk1/oradata/redo01b.log’ TO GROUP 1；。 ALTER DATABASE ADD LOGFILE MEMBER ’/disk2/oradata/redo01b.log’ TO GROUP 1；。 ALTER DATABASE ADD LOGFILE MEMBER ’/disk1/oradata/redo02b.log’ TO GROUP 2；。 ALTER DATABASE ADD LOGFILE MEMBER ’/disk2/oradata/redo02b.log’ TO GROUP 2；。 ALTER DATABASE ADD LOGFILE MEMBER ’/disk1/oradata/redo3b.log’ TO GROUP 3；。 ALTER DATABASE ADD LOGFILE MEMBER ’/disk2/oradata/redo3b.log’ TO GROUP3；。
The EMP table contains these columns: LAST NAME VARCHAR2(25) SALARY NUMBER(6,2) DEPARTMENT_ID NUMBER(6) You need to display the employees who have not been assigned to any department. You write the SELECT statement: SELECT LAST_NAME, SALARY, DEPARTMENT_ID FROM EMP WHERE DEPARMENT_ID = NULL; What is true about this SQL statement? （） The SQL statement displays the desired results.。 The column in the WHERE clause should be changed to display the desired results.。 The operator in the WHERE clause should be changed to display the desired results.。 The WHERE clause should be changed to use an outer join to display the desired results.。
An administrator is moving a volume group from one server to another. The disks will be physically moved between the two systems. Which two operations are required on the volume group prior to the physical disk switch？（） ’varyoffvg’ and ’exportvg’。 ’varyofflv’ and ’importvg’。 ’varyofflv’ and ’migratepv’。 ’varyoffvg’ and ’migratevg&rsquo。
A customer has six Windows 2003 servers， three RedHat Linux servers， and three Netware servers. The current environment is direct attached storage. The customer needs a 2Gb Fibre solution that can scale up to 64 partitions over the next three years and provide connectivity to all three platforms. The customer also needs a fibre attached backup solution. Which of the following solutions has the best combination of price and performance？（）
