When performing password recovery, which command should be entered at the boot prompt？（）

ntial.

A: when to deal with a worker

B; when dealing with a worker

C; when dealt with a worker

A.UNI interface configuratio

B.Static MAC configuratio

C.configuratio

D.VLAN interface configuratio

A.EAP

B. RADIUS

C. SSL

D. EAP-o-HTTP

A、when he is making a decision

B、when he is performing an operation

C、when he has made mistakes

D、all of the above (a+b+c)

A.Set the encapsulation of the interface to HDLC

B.Place the CSU/DSU in local-loop mode

C.Enable local-loop mode on the DCE Frame Relay router

D.Verify that the encapsulation is set to Frame Relay

A. Set the BACKUP_TAPE_IO_SLAVES parameter to FALSE

B.Set the BACKUP_TAPE_IO_SLAVES parameter to TRUE

C. Use compression when performing tape backups

D. Configure multiple SBT channels

he DATA1 tablespace. You place the DATA1 tablespace in backup mode by issuing the following statement:ALTER TABLESPACE data1 BEGIN BACKUP;While you are performing the backup, an error occurs that causes the instance to terminate abnormally. Which statement about the DATA1 tablespace is true？（）

A. The DATA1 tablespace is automatically taken out of backup mode when the instance aborts.

B. If you restart the database, the DATA1 tablespace will be automatically taken out of backup mode when the database is opened.

C. If you restart the database, the DATA1 tablespace will be automatically taken out of backup mode when the database is mounted.

D. If you restart the database, the database will not be opened.

in the port of shipment.( )

eduction operation. When switching protection group manually, the switching is only implemented at one side, the other side will: ()。

A.Perform. automatic changeover simultaneously

B.Perform. changeover manually (automatic changeover is not available)

C.Unknown status

D.Perform. changeover one minute later.