In JUNOS software， which would prevent an OSPF router from importing the 10.0.0.4/30 summary route？（）

A、Import policies are not allowed， so this is not possible.

B、Export policies are not allowed， so this not possible.

C、Apply a firewall filter matching 10.0.0./4/30 and reject the route.

D、Apply an import policy matching 10.0.0.4/30 and reject the route.

为“学生”表的“年龄”字段增加有效性规则“年龄必须在18-45岁之间”的SQL语句是（　　）。

A、ALTER TABLE学生ALTER年龄SET CHECK年龄<=45 AND年龄>=18

B、ALTER TABLE学生ALTER年龄ADD年龄<=45 AND年龄>=18

C、ALTER TABLE学生ALTER年龄WHERE年龄<=45 AND年龄>=18

D、ALTER TABLE学生ALTER年龄MODI年龄<=45 AND年龄>=18

下面控件中没有Caption属性的是（　　）。

A、复选框

B、单选按钮

C、组合框

D、框架

You have a Junos Pulse Secure Access Service acting as an IF-MAP client, configured to federate all user roles to a Junos Pulse Access Control Service acting as an IF-MAP Federation server. A remote user using Junos Pulse logs in to the Junos Pulse Secure Access Service; the Junos Pulse Secure Access Service provisions a remote access session for that user.What happens next?（）

A、The Junos Pulse Secure Access Service redirects the user to the Junos Pulse Secure Access Service for authentication

B、The Junos Pulse Access Control Service provisions enforcement points to enable resource access for that user.

C、The Junos Pulse Secure Access Service publishes user session and role information to the IF- MAP Federation server,

D、The Junos Pulse Secure Access Service provisions enforcement points to enable resource access for that user.

要想使列表框只允许单选列表项，应设置的属性为（　　）。

A、Style

B、Selected

C、MultiSelect

D、Enabled

Which IBM tape interface architecture has the best performance and distance characteristics? （）

A、SAS

B、SCSI

C、ESCON

D、Fibre Channel