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programming languages Online Quiz - 70

Description: programming languages Online Quiz - 70
Number of Questions: 20
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Tags: programming languages
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Which of the following sorts is quickest when sorting the following set: 1 2 3 5 4

  1. Bubble Sort

  2. Quick Sort

  3. Merge Sort

  4. Radix Sort


Correct Option: A

What is the output of the following code: int v() { int m=0; return m++; } int main() { cout<

  1. 1

  2. 0

  3. Code cannot compile

  4. Run time error


Correct Option: B

Which of the following data structures is on average the fastest for retrieving data:

  1. Binary Tree

  2. Hash Table

  3. Stack

  4. Queue


Correct Option: B

If you continuously increment a variable, it will become negative?

  1. True

  2. False

  3. Cannot continuously increment a variable

  4. It depends on the variable type


Correct Option: D

Which of the following is evaluated first:

  1. &&

  2. ||

  3. !

  4. &&&


Correct Option: C

What does 7/9*9 equal (in C and C++)?

  1. 1

  2. 0.08642

  3. 0

  4. 7


Correct Option: C

Which of the following is true?

  1. 1

  2. 66

  3. .1

  4. -1

  5. All of the above


Correct Option: E

Difference between Emp e = session.load(Emp.class) and Emp e = session.createCriteria(Emp.class) ?

  1. On session close session.load() Emp Object unavailable to access.

  2. On session close session.createCriteria() Emp unavailable to access.

  3. None

  4. a & b


Correct Option: A

____ forces hibernate to bypass the setter method and access the instance variable directly while initializing a newly loaded object.

  1. By mapping the property with access="onlyfield" in Hibernate metadata

  2. By mapping the property with access="variable" in Hibernate metadata

  3. By mapping the property with access="field" in Hibernate metadata

  4. none of the above


Correct Option: C

Employee emp = session.load(Employee .class);

  1. Yes

  2. No

  3. None

  4. None of the above


Correct Option: B

what does hibernate.hbm2ddl.auto create this means ?

  1. create tables automatically

  2. create session object automatically

  3. create Session Factory object automatically

  4. None


Correct Option: A

How can a whole class be mapped as immutable?

  1. By using the mutable="false" attribute in the class mapping.

  2. By using the ismutable="false" attribute in the class mapping.

  3. By using the ismutable="no" attribute in the class mapping

  4. None


Correct Option: A

What does sess.delete() do?

  1. a) remove data from in memory

  2. b) remove from database.

  3. c) remove from sessionFactory

  4. d) None of the above.


Correct Option: B

If instances are not in the session or second-level cache which will give better performance?

  1. Query.list()

  2. Query.iterate()

  3. Both are same

  4. None of the above


Correct Option: A

What does CacheMode do ?

  1. controls how a particular SessionFactory interacts with the Data Base.

  2. controls how a particular SessionFactory interacts with the second-level cache.

  3. controls how a particular session interacts with the second-level cache.

  4. None


Correct Option: C

Does hibernate require persistent classes to implement Serializable?

  1. Required

  2. Not Required

  3. None of the above

  4. None


Correct Option: B

What does session.load() return if there is no matching database row ?

  1. NULL

  2. Empty Object

  3. Unrecoverable exception

  4. None of the above


Correct Option: C

HQL is used in ?

  1. session.createQuery();

  2. session.createCriteria();

  3. session.createSQLQuery();

  4. session.lod();


Correct Option: A

what is the default value in hibernate ?

  1. lazy=false;

  2. lazy=true;

  3. lazy=yes;

  4. lazy=no;


Correct Option: B

Batch fetching is useful incase of ?

  1. lazy="true"

  2. lazy="false"

  3. lazy="on"

  4. lazy="off"


Correct Option: A
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