What does this practice explain？ Choose 2 answers.

A .  Enables all fiber-optic LAN ports for Unidirectional LINK Detection （UDLD） B .  Enables all copper media LAN ports Unidirectional Link Detection （UDLD） C .  Overrides the default UDLS setting for all ports D .  Globally enables all ports on the device for Unidirectional Link Detection （UDLS） E .  None of the other alternatives apply

A . One or more processes are running in the background, preventing log off. B . One or more processes are paused, requiring operator input prior to logging off. C . At least one process is running in the background and it will keep running after the operator logs off D . At least one process is running in the background using nohup and it will terminate when the operator logs off

A . A text copy of the control file. B . A binary copy of the control file. C . A file containing a SQL statement which will re-create the database. D . A file containing a SQL statement which will re-create the control file.

A . It performs a merge join of the row from T2 only if it doesn’t exist in the T1 table.  B . It creates a natural join of tables T1 and T2 for all columns that have the same name.  C . It creates a Cartesian product of table T1 and table T2 for all columns that have the same name.  D . For each row from T2, it updates the row if it exists within table T1, otherwise it inserts the row into T1.

A . varyon of the paging device failed. B . fsck of the root （/） filesystem failed. C . varyon of the root volume group failed. D . IPL device could not be opened or a read failed.

A . No privileges. B . Only the SELECT privilege. C . Only the CONNECT privilege. D . All the privileges of a default user.

A . No privileges. B . Only the SELECT privilege. C . Only the CONNECT privilege. D . All the privileges of a default user.

A . Dunhuang. B . Early Chinese art. C . Indian and Chinese art. D . Persian and Middle Eastern art.

A . varyon of the paging device failed. B . fsck of the root (/) filesystem failed. C . varyon of the root volume group failed. D . IPL device could not be opened or a read failed.

A . Create a table view. B . Create a view in any schema. C . Create a view in your schema. D . Create a sequence view in any schema. E . Create a view that is accessible by everyone. F . Create a view only of it is based on tables that you created.

A . The Aironet card is in power save mode. B . The Aironet card is looking for a network association. C . The Aironet card is joined to a network， but there is no network activity. D . The Aironet card is joined to a network， and there is network activity.

A、 only now, and at no other time B、 now, at such a late time C、 just a moment ago D、 Any of the above.

A．That its great mixture of rhythm and beat makes jazz music timeless. B．That jazz music would outlast any other genres of music. C．That jazz music will keep on changing but the name of the genre will remain. D．That its various forms and styles will be remembered always.

A．You should not learn grammar only. B．You should ignore the rules of pronunciation. C．You should learn a language by making mistakes. D．You should learn a language at school.

A．He is an architect B．He is an engineer C．He is a teacher

A．The combination ratio of atoms was resolved. B．The weighing method of atoms was resolved. C．The construction of water was resolved. D．The structure of an atom was resolve 此题为多项选择题。

A．How to avoid car crash. B．How to educate children properly. C．How to design safer baby equipment. D．How to properly secure children in the car.

A．The restaurant was very well managed. B．All the restaurant workers were busy. C．McDonald's was a famous restaurant.

A．Geron ends government interference in this area. B．Geron settles the disputes over stem cell research. C．Geron follows up the research on their own. D．Geron rallies for the research.