Examine the following command that is used to duplicate a database on the same host: RMAN> RUN { ALLOCATE AUXILIARY CHANNEL, aux 1 DEVICE TYPE DISK; DUPLICATE TARGET DATABASE TO auxdb SKIP READONLY; / } Which two statements describe the effect after the database is duplicated successfully? （）(Choose two)

A

The data files of the read-only tablespaces in the target database are not duplicated

B

The read-only tablespaces in the target database are still defined in new the database

C

The read-only tablespaces in the target database are changed to online after duplication

D

The data files of the read-only tablespaces in the target database get duplicated

E

The read-only tablespaces in the target database are not defined in the new database

光（电）缆线路在（）地区无需采取相应的防护措施。

A、鼠害

B、鸟害

C、蚁害

D、蛇害

A customer receives a CD-RW disk from a computer vendor. The customer tries to read the disk in a computer with a 4X CD-ROM drive and is unable to read any information. The customer tries the CD-RW disk on a 32X CD-ROM drive and it reads correctly. What is the cause of this problem？（）

A、The 4X CD-ROM drive has dirty optics or laser and requires cleaning.

B、The 4X CD-ROM drive needs to be jumpered to support CD-RW disks.

C、The 4X CD-ROM drive does not support the multi-read specification.

D、The 4X CD-ROM is fine， but the CD-RW disk has a flaw in its format.

The PPP over Ethernet Discovery Stage determines which two parameters? （）(Choose two.)

session ID

authentication server

IP address of the client

MAC address of the ERX router

Which configuration command permits dynamic detection of the ATM frame format?（）

A、aal5mux

B、aal5snap

C、aal5dynamic

D、aal5autoconfig

A computer boots up with the error "CMOS Checksum Failure." Which of the following components needs to be replaced？（）

A、power supply

B、CMOS chip

C、motherboard

D、CMOS battery