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programming languages Online Quiz - 339

Description: programming languages Online Quiz - 339
Number of Questions: 20
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Tags: programming languages
Attempted 0/20 Correct 0 Score 0

The following will compile with no errors float abc = 2;

  1. True

  2. False


Correct Option: A

1.) Difference between fork() & vfork()

  1. a) vforlk() allows more one child process to be created simaltaneously whereas for() allows only one

  2. b) vfork() retains same PID for child & parent known as virtual PID

  3. c) vfork() suspends the parent process until child process exits

  4. d) fork() & vfork() are same


Correct Option: C

1.) Difference between fork() & vfork()

  1. a) vforlk() allows more one child process to be created simaltaneously whereas for() allows only one

  2. b) vfork() retains same PID for child & parent known as virtual PID

  3. c) vfork() suspends the parent process until child process exits

  4. d) fork() & vfork() are same


Correct Option: C
  1. a) getenv(), setenv()

  2. b) getenv(), putenv()

  3. c) readenv(), writeenv()

  4. d) You cannot environmement variables inside a program


Correct Option: B

3.) How can I sleep for less than a second?

  1. a) sleep(1/10)

  2. b) Not possible

  3. c) usleep()

  4. d) ssleep()


Correct Option: C
  1. a) Using open()

  2. b) Using popen()

  3. c) Using fork()

  4. d) Using exec()


Correct Option: B

Which statement is correct ?

  1. a) session.contains() method to determine if an instance belongs to the session cache.

  2. b) session.contains() method to determine if an instance belongs to the data base .

  3. c) Both are correct

  4. d) none of the above


Correct Option: A

5.) How do I get rid of zombie processes?

  1. a) Use popen() & pclose()

  2. b) Use wait()

  3. c) Use ps()

  4. d) None


Correct Option: B
  1. a) ListResultSet

  2. b) ResultSet

  3. c) ScrollableResultSet

  4. d) ScrollableResult


Correct Option: D
  1. a) Mapping files can be added to Configuration in the application code

  2. b) They can be configured in hibernate.cfg.xml using the elements

  3. c) both a and b

  4. d) none of the above


Correct Option: C

SessionFactory represent which level of cache ?

  1. a) 2nd

  2. b) Ist

  3. c) 3rd

  4. d) 4th


Correct Option: A
  1. a) StandardQueryCache and UpdateTimestampsCache

  2. b) StandardQueryCache

  3. c) QueryCache

  4. d) QueryCache and TimestampsCache


Correct Option: A

hibernate.cache.use_query_cache setting true enable cache regions ?

  1. a) StandardQueryCache and UpdateTimestampsCache

  2. b) StandardQueryCache

  3. c) QueryCache

  4. d) QueryCache and TimestampsCache


Correct Option: A
  1. a) lazy="true"

  2. b) lazy="false"

  3. c) lazy="on"

  4. d) lazy="off"


Correct Option: A

batch fetching is useful incase of ?

  1. a) lazy="true"

  2. b) lazy="false"

  3. c) lazy="on"

  4. d) lazy="off"


Correct Option: A
  1. a) lazy=false;

  2. b) lazy=true;

  3. c) lazy=yes;

  4. d) lazy=no;


Correct Option: B
  1. a) session.createQuery();

  2. b) session.createCriteria();

  3. c) session.createSQLQuery();

  4. d) session.lod();


Correct Option: A
  1. a) NULL

  2. b) Empty Object

  3. c) unrecoverable exception

  4. d) None of the above


Correct Option: C
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