Oracle认证考试
Examine the following statement that is used to modify the constraint on the SALES table： SQL> ALTER TABLE SALES MODIFY CONSTRAINT pk DISABLE VALIDATE； Which three statements are true regarding the above command（）A、The constraint remains valid.B、The inde
题目
Examine the following statement that is used to modify the constraint on the SALES table： SQL> ALTER TABLE SALES MODIFY CONSTRAINT pk DISABLE VALIDATE； Which three statements are true regarding the above command（）
- A、The constraint remains valid.
- B、The index on the constraint is dropped.
- C、It allows the loading of data into the table using SQL*Loader.
- D、New data conforms to the constraint， but existing data is not checked
- E、It allows the data manipulation on the table using INSERT/UPDATE/DELETE SQL statements.
相似问题和答案
第1题：
Your multitenant container database (CDB) is running in ARCHIVELOG mode. You connect to the CDB RMAN.Examine the following command and its output:You execute the following command:RMAN > BACKUP DATABASE PLUS ARCHIVELOG;Which data files will be backed up?（）
A. Data files that belong to only the root container
B. Data files that belong to the root container and all the pluggable databases (PDBs)
C. Data files that belong to only the root container and PDB$SEED
D. Data files that belong to the root container and all the PDBs excluding PDB$SEED
第2题：
A user is unable to connect to the company‘s intranet server by FQDN, but can connect by IP address. Other users are not having a problem. An administrator verifies that the user can successfully ping the server by IP address and can properly resolve the FQDN using nslookup. The problem is persisting after running ipconfig /flushdns.Which of the following should the administrator do NEXT?（）
A. Examine the Imhost file.
B. Flush the cache on the DNS server.
C. Flush the cache on the WINS server.
D. Examine the hosts file
第3题：
A. 4
B. 8
C. 7
D. 0
第4题：
Examine the following options，which Spanning Tree Protocol （STP） protection mechanism disables aswitch port if the port receives a Bridge Protocol Data Unit （BPDU）？（）
- A、Uplink Fast
- B、Port Fast
- C、BPDU Guard
- D、Root Guard
正确答案:C
第5题：
B.having followed
C.being followed
D.to be followed
第6题：
A. Configure offline devices
B. Examine performance issues
C. Install additional software and updates
D. View syslog events
第7题：
A. many - to - one
B. one - to - one
C. one - to - many
D. many - to - many
第8题：
Examine the following commands and their output:View the exhibit and examine the Flashback Version Query that was executed after the preceding commands.What could be the possible cause for the query not displaying any row?（）
A. Flashback logging is not enabled for the database.
B. The changes made to the table are not committed.
C. Supplemental logging is not enabled for the database.
D. The database is not configured in ARCHIVELOG mode.
第9题：
You examine the port statistics on a Cisco Catalyst switch and notice an excessive number offrames are being dropped. Which of the following are possible reasons for the drops？（）
- A、Unknown destination MAC address
- B、Bad cabling
- C、MAC forwarding table is full
- D、Port configured for half duplex
- E、Port configured for full duplex
- F、Network congestion
正确答案:B,F
第10题：
Which of the following is not considered a common approach to narrow the field of potentialproblem causes？ （Choose the best answer.）（）
- A、Following the traffic path
- B、Top-down
- C、Comparing configurations
- D、Bottom-up
- E、Divide and conquer
- F、Examine SLAs
正确答案:F