Which of the following security features are enabled by default after creating an instance？（）

A、Password Invalidation

B、Login Timeout

C、Cross Site Scripting Protection

D、Access Logging

User SCOTT wants to perform a bulk insert operation in the EMP_DEP table. SCOTT receives thefollowing error after the INSERT statement is issued and few rows are inserted： INSERT INTO EMP_DEP （emp_id，name，salary，dep_name，mgr_id） *  ERROR at line 1：  ORA-01653： unable to extend table SCOTT.EMP_DEP by 128 in tablespace USERS Identify two actions either of which will help you resolve this problem.（）

Grant the RESOURCE role to SCOTT.

Add data files to the USERS tablespace.

Grant the CREATE ANY TABLE privilege to SCOTT.

Increase the space for SCOTT on the USERS tablespace.

Increase the size of the data file associated with the USERS tablespace

Which configuration command allows the router to utilize a RADIUS server to auth enticate in coming Telnet users？（）

A、aaa new-model

B、aaa telnet login

C、telnet authentication login

D、authentication telnet login

Which of the following terms describes files and folders in sub-directories having the samepermissions as the root or parent directory?（）

A、Least privilege

B、Default permissions

C、Local shares

D、Inheritance

After creating a WebSphere Commerce instance， an administrator attempts to log on to the WebSphere Commerce Administration Console.  The browser reports a "500 Internal Server Error".  What could cause this to occur？（）

A、The web server was not started

B、The Payments Engine was not started

C、The WebSphere Commerce Payments instance was not started

D、The WebSphere Commerce application server was not started

E、The Configuration Manager service was not started

请问用DDA方法计算像素位置有什么优点与缺点？