Oracle 1Z0-819 Online Practice Questions and Exam Preparation

Oracle 1Z0-819 Online Questions & Answers

• Question 51:

  Given these two classes:

  

  And given this fragment:

  

  Which describes the fragment?

  A. It throws an IllegalMonitorStateException.
  B. It is subject to deadlock.
  C. It is subject to livelock.
  D. The code does not compile.
  B. It is subject to deadlock.

• Question 52:

  Given these declarations:

  

  and these two code fragments: Fragment 1:

  

  Fragment 2:

  

  Which code fragment is preferred and why?

  A. Fragment 1 because it is shorter.
  B. Fragment 2 because it prevents SQL injection.
  C. Fragment 2 because it explicitly specifies the SQL types of the column values.
  D. Fragment 1 because it is more performant.
  B. Fragment 2 because it prevents SQL injection.

• Question 53:

  Given:

  

  What change will cause the code to compile successfully?

  A. Insert PriceChecker (?) prod on line 1.
  B. Insert PriceChecker prod on line 1.
  C. Insert PriceChecker prod on line 1.
  D. Insert PriceChecker prod on line 1.
  A. Insert PriceChecker (?) prod on line 1.

• Question 54:

  Given:

  

  What is the result?

  A. Joe Joe
  B. null Mary
  C. Joe Marry
  D. null null
  A. Joe Joe

• Question 55:

  Given:

  

  Which loop incurs a compile time error?

  A. the loop starting line 11
  B. the loop starting line 7
  C. the loop starting line 14
  D. the loop starting line 3
  A. the loop starting line 11

• Question 56:

  Given: What is the result?

  

  A. 6910 3
  B. 10126 3
  C. 3
  D. 6104 3
  D. 6104 3

• Question 57:

  Consider this method declaration:

  

  "SET SESSION AUTHORIZATION " + user

  "SET SESSION AUTHORIZATION " + stmt.enquoteIdentifier(user)

  Is A or B the correct replacement for and why?

  A. A, because it sends exactly the value of user provided by the calling code.
  B. because enquoting values provided by the calling code prevents SQL injection.
  C. A and B are functionally equivalent.
  D. A, because it is unnecessary to enclose identifiers in quotes.
  E. B, because all values provided by the calling code should be enquoted.
  A. A, because it sends exactly the value of user provided by the calling code.

• Question 58:

  Given:

  

  What is the output?

  A. Hello world!Bonjour le monde!
  B. Hello world!Hello world!
  C. Bonjour le monde!Hello world!
  D. Bonjour le monde!Bonjour le monde!
  A. Hello world!Bonjour le monde!

• Question 59:

  Given:

  

  How many Thing objects are eligible for garbage collection in line 1?

  A. 3
  B. 2
  D. 1
  E. 4
  D. 1

• Question 60:

  Examine these module declarations:

  

  Which two statements are correct? (Choose two.)

  A. The ServiceProvider module is the only module that, at run time, can provide the com.example.api API.
  B. The placement of the com.example.api API in a separate module, ServiceAPI, makes it easy to install multiple provider modules.
  C. The Consumer module should require the ServiceProvider module.
  D. The ServiceProvider module should export the com.myimpl package.
  E. The ServiceProvider module does not know the identity of a module (such as Consumer) that uses the com.example.api API.
  A. The ServiceProvider module is the only module that, at run time, can provide the com.example.api API.
  C. The Consumer module should require the ServiceProvider module.