Which statement about the enabling of table compression in Oracle Database 11g is true？（）  

A . a class can be identified as a single application， multiple applications with similar service needs，or be based on the source or destination IP address B . a drawback of the DiffServ field in the MAC header to mark frames into behavior aggregates （BAs） C . DiffServ uses the DiffServ field in the MAC header to mark frames into behavior D . the DiffServ field occupies the same eight bits of the MAC header that were previously used for the ToS field E . the first six high-order bits of the DiffServ field are used to identify the Resource Reservation Protocol （RSVP） value F . the primary goal of DiffServ is scalability

A . the DVS engine can useWebroot and McAfee scanning in parallel B . the DVS engine generates the WBRS C . the DVS engine never inspects the client HTTP request D . the DVS engine is only used for Layer 4 traffic monitoring

A . Its accuracy remains the same at all latitudes B . It seeks the true meridian C . It can be used near the Earth's magnetic poles D . If an error exists，it is the same on all heading

A . The hashCode method for a given class can be used to test for object equality and object inequality for that class. B . The hashCode method is used by the java.util.SortedSet collection class to order the elements within that set. C . The hashCode method for a given class can be used to test for object inequality， but NOT objecte quality， for that class. D . The only important characteristic of the values returned by a hashCode method is that the distribution of values must follow a Gaussian distribution. E . The hashCode method is used by the java.util.HashSet collection class to group the elements within that set into hash buckets for swift retrieval.

A . It releases the storage space used by the table. B . It does not release the storage space used by the table. C . You can roll back the deletion of rows after the statement executes. D . You can NOT roll back the deletion of rows after the statement executes. E . An attempt to use DESCRIBE on the DEPT table after the TRUNCATE statement executes will display an error. F . You must be the owner of the table or have DELETE ANY TABLE system privileges to truncate the DEPT table

A .  it is a topology agnostic way to access NamedCaches B .  it provides mechanisms to manage underlying remote data sources C .  both A and B are TRUE D . Neither A nor B are TRUE

A . No logical volumes wil be moved if write-verify is set to yes. B . No action will be performed if it cannot fulfill the allocation requirements. C . Physical partitions of a logical volume will be moved if the logical volume's relocatable flag is set to "no". D . Physical partitions will be moved as close as possible to the positions specified, if the allocation requirements cannot be fulfilled.

A . The rules require vessels to comply with Traffic Separation Scheme regulations B . The rules use the term safe speed C . The Rules permit a stand-on vessel to take action prior to being in extremis D . All of the above are correct

A .  The program developer must create a thread to be responsible for free the memory. B .  The garbage collection will check for and free memory no longer needed. C .  The garbage collection allow the program developer to explicity and immediately free the memory. D .  The garbage collection can free the memory used java object at expect time.

A．It is a deadly bombing in Germany last night and is considered by the government as a right-wing terrorist attack． B．Eleven people were found dead at two hookah bars outside Frankfurt． C．The suspect escaped after the attack and the police has not found him yet． D．According to media reports, the victims in the bars were from Germany’s Turkish and Kurdish communities．

A．The umbrella was first invented to be used as protection against the sun. B．The umbrella changed much in style. in the eighteenth century. C．No one exactly knows who was the inventor of the umbrella. D．In Europe, the Greeks were the first to use the umbrella.

A．Women are more willing to cooperate than men. B．The number of male respondents is a little larger than that of the female. C．The respondents are not willing to cooperate for the sake of privacy. D．The number of female respondents is larger than that of the male.

A．No one exactly knows who the inventor of the umbrella was. B．The umbrella was fist invented to protect against the sun. C．The umbrella changed much in style. in the eighteenth century. D．In Europe the Greeks were the first to use the umbrella.

A．it was done within 30 hours. B．It was headed by Professor Stickgold. C．It focused on long-term memory formation. D．There were altogether 24 subjects in the experiment.

A．violence toward women is a common phenomenon occurring in Mexico. B．Mexico's government kept an indifferent attitude to the violence toward women. C．Mexico's government has exerted itself to tackle crimes against females. D．The statistics about women victim cases is usually distorted by the government.

A．He is the only one to be charged in the 2000 bombing. B．He has already served one year in the US military prison. C．He will probably be sentenced to capital punishment. D．He said he had confessed to the Pentagon voluntarily.

A It starts on March 15. B It occurs every fourth year. C It is known as "March Madness" D It lasts through the beginning of April.

A．The place of the quiz need to be fixed. B．The purpose is to find out if your boss is a madman. C．The only question is if a boss is a superficially charming person. D．One of the question is if a boss has a lot of real and helpful friends.

A．The town seems to be in a terribly run-down state. B．The weather of the town is agreeable in winter. C．The largest building is on the brink of collapse. D．In summer, people can see a figure in the largest building.

<img src='https://img2.soutiyun.com/shangxueba/ask/17124001-17127000/17125965/b72f75ba07546ac2c64c056638aa8ab6.jpg' /> A. The factory-default configuration is running on the device. B. The Junos OS was corrupted and did not boot correctly. C. The device was recently upgraded to a newer version of the Junos OS. D. The device‘s memory has been corrupted and no file system is present after a reboot.

A．It manages group pension funds for more than a hundred firms B．It may have covered up losses for years according to the reports. C．It will take every possible step to prevent further loss of funds. D．Japan watchdog halts its operations on fears over lost asset.

A．It was done within 30 hours． B．It was headed by Professor Stinkwood． C．It focused on long-term memory formation． D．There were altogether 24 subjects in the expedient．

A．Gold and jewels were included in making it． B．It must be somewhere now as a whole C．The Amber Room would be very soft when heate D．Frederick William I gave the Amber Room to Peter the Great．