Note Test Cert hp exams

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there are some questions about theres hp exams.
1.Which join methods does NonStop SQL support 640-861 ?

A: nested join, right join, merge join
B: inner join, nested join
C: nested join, hash join, merge join
D: left join, right join
Correct Answers:  C 

2.The entries of a   70-282  program have been deleted from the USAGES table. What is the reason? The program _______.

A: is written in Java
B: is poorly designed
C: became invalid
D: has logic errors
Correct Answers:  C

3.The MB2-186  catalog version number is used to _______.

A: provide version control for all system components on a node
B: identify the latest version of SQL objects that can be registered
C: force the optimizer to choose a new access strategy for new SQL objects
D: determine the release version of the NonStop operating system installed
Correct Answers:  B