A system administrator will be migrating a server from AIX 5.1 to AIX 5.2 and is uncertain if the application running on the server will function properly after the migration. What is the fastest way to return to the previous AIX level if the application does not work?()
A、Use base media to restore system to AIX 5.1.
B、Use an alt_disk_install and boot back to the AIX 5.1 rootvg.
C、Make a mksysb of the original AIX to restore back to the AIX 5.1 level.
D、Perform the AIX 5.2 upgrade using update_all with the commit option and reject filesets to return to AIX 5.1.
如果经常执行类似于下面的查询语句SELECT * FROM STUDENT where substr(sname,0,2)=’陈’,应该为STUDENT表的SNAME列创建()索引。
A、B树唯一索引
B、B树不唯一索引
C、基于函数的索引
D、位图索引
有以下结构体说明、变量定义和赋值语句 struct STD { char name[10]; int age; char sex; }s[5],*ps; ps = &s[0]; 则以下scanf函数调用语句有错误的是( )。
A、scanf("%s",s[0].name);
B、scanf("%d",&s[0].age);
C、scanf("%c",&(ps->sex));
D、scanf("%d",ps->age);
On a pre-existing OAC, which three options can the Infranet Controller overwrite when the useraccesses the Infranet Controller?()
ASSID
Blogin name
CMAC address
Dwired adapters
Eencryption method
以下哪个文件系统是*nix系统特有的?()
A、FAT
B、EXT3
C、NTFS
D、FAT32
采用Select语句返回的结果是一个结果集。用户只能浏览该结果集中的数据,无法对数据进行操作。如果需要逐行对数据进行访问和操作,可以使用()。
A、视图
B、过程
C、函数
D、游标