单项选择题
A.The user SKD can grant only the MGR_ROLE role to other users， but not the privileges in it.
B.The user SKD can revoke the MGR_ROLE only from the users for whom he/she is the grantor.
C.The user SKD can grant the privileges in the MGR_ROLE role to other users， but not with ADMIN OPTION.
D.The user SKD can grant the privileges in the MGR_ROLE role to other users， but cannot revoke privileges from them.
单项选择题 The database instance has the following parameter setting： OS_AUTHENT_PREFIX = OPS$ OS_ROLES = FALSE REMOTE_OS_AUTHENT = FALSE REMOTE_OS_ROLES = FALSE TIMED_OS_STATISTICS = 0 You have a local operating system user SKD. You create a database user OPS$SKD， and then assignexternal authentication. The user OPS$SKD has the CREATE SESSION privilege. What would youachieve by the above process（）
多项选择题 Examinethecommand：SQL>ALTERUSERskdACCOUNTLOCK；Whichtwostatementsaretrueafterthecommandisexecuted（）
多项选择题 View the Exhibit1， which shows the options that are selected to create the user SL_REP. Which two statements are true regarding this user（）
