A customer has a requirement for Disaster Recovery for compliance within their industry. Theyhave an RPO of 4 hours and an RTO of 24 hours. Cost is a consideration. What is the most costeffective DR implementation？（） ["a disk-to-disk backup solution keeping all storage in the data center","a backup solution that includes magnetic tape that is shipped to an off-site storage facility","a less powerful copy environment at a hot site with asynchronous mirroring and cluster technology","an exact copy of the primary environment at a hot site with remote mirroring and cluster technology"]
A公司是年净收益200万元的小公司，张某打算收购它，于是他寻找了一家刚刚出售的与A公司条件相当的企业，该企业的价格收益比是5。那么由此可以断定A公司的市场价值为（）万元。 ["1000","40","100","400"]
什么是按绩效付酬为什么说实际工作中按绩效付酬有难度
You need to produce a report for mailing labels for all customers. The mailing label must have only the customer name and address. The CUSTOMERS table has these columns: CUST_ID NUMBER(4) NOT NULL CUST_NAME VARCHAR2(100) NOT NULL CUST_ADDRESS VARCHAR2(150) CUST_PHONE VARCHAR2(20) Which SELECT statement accomplishes this task?（） [" SELECT* FROM customers;"," SELECT name, address FROM customers;"," SELECT id, name, address, phone FROM customers;"," SELECT cust_name, cust_address FROM customers;"," SELECT cust_id, cust_name, cust_address, cust_phone FROM customer"]
Note the following points describing various utilities in Oracle Database 1g：1. It enables the high-speed transfer of data from one database to another. 2. It provides a complete solution for the backup， restoration， and recovery needs of the entire database.3. It enables the loading of data from an external file into an Oracle database.4. It provides a tape backup management for the Oracle ecosystem. Which point describes Oracle Secure Backup（） ["1","2","3","4","1， 2， and 4","1， 2， 3， and 4"]
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