What two are the prerequisites for enabling Flashback Database?（）
第1题：
A. The database must be opened in restricted mode.
B. The database must be configured to run in ARCHIVELOG mode.
C. The tablespaces are required to be in backup mode before taking the backup.
D. The tablespaces are required to be in read-only mode before taking the backup
第2题：
A.LAN
B.QoS
C.traffic
D.IPSec
第3题：
A. The database must be in ARCHIVELOG mode
B. The database must be in MOUNT EXCLUSIVE mode
C. The database must be opened in RESTRICTED mode
D. The database instance must be started in the NOMOUNT state
E. The database instance must have the keep buffer pool defined
第4题：
What must an administrator do in order to successfully configure a VLAN trunk between two switches?（）
第5题：
What are the two functions of intonation?
It indicates grammatical meaning in much the same way as punctuation does in the written language. It can also indicate the speaker’s attitude. In some cases, both grammatical meaning and attitude are conveyed by the intonation pattern alone.
略
第6题：
A. Flashback Database must be enabled.
B. Undo retention guarantee for the database must be configured.
C. EXECUTE privilege on the DBMS_FLASHBACK package must be granted to the user flashing back transaction.
D. Supplemental logging must be enabled.
E. Recycle bin must be enabled for the database.
F. Block change tracking must be enabled tor the database.
第7题：
A. Set each end of the trunk line to IEEE 802.1Q encapsulation.
B. Set the same VTP management domain name on both switches.
C. Set all ports on the two switched as access ports.
D. Configure one of the two switches as a VTP server.
E. Connect the two switches using a rollover cable.
F. Use a router to forward VTP traffic between the VLANs.
第8题：
A. Flash recovery area must be defined
B. Undo retention guarantee must be enabled.
C. Database must be running in archivelog mode.
D. Automatic undo management must be enabled.
E. The tablespace in which the Flashback Data Archive is created must have automatic segment space Management (ASSM).
第9题：
Before a Diffie-Hellman exchange may begin， the two parties involved must agree on what？（）
第10题：
---“（）” ---“Two degrees on starboard.”