Oracle 1Z0-869 Online Practice Questions and Exam Preparation

Oracle 1Z0-869 Online Questions & Answers

• Question 131:

  Which class is available for use in trusted and untrusted domains?

  A. javax.microedition.io.CommConnection
  B. javax.microedition.io.Datagram
  C. javax.microedition.io.SocketConnection
  D. javax.microedition.io.HttpsConnection
  D. javax.microedition.io.HttpsConnection

• Question 132:

  Which two are true about MIDlet suite provisioning? (Choose two.)

  A. A JTWI-compliant device must support HTTP 1.1.
  B. A JTWI-compliant device must support HTTP 1.0.
  C. A JTWI-compliant device must support HTTP 1.1 and cookies.
  D. A JTWI-compliant device must support HTTP authentication.
  A. A JTWI-compliant device must support HTTP 1.1.
  D. A JTWI-compliant device must support HTTP authentication.

• Question 133:

  Manager.createPlayer(..) may involve synchronous blocking I/O operations, possibly blocking execution for an indefinite amount of time. Which is the most efficient way to create a Player object and receive the events it generates?

  A. Create the Player from an InputStream, possibly after copying data into memory.
  B. Create the Player in a separate thread from the user interface, then create a PlayerListener that receives events from this Player.
  C. Ensure System.gc() is called before creating the Player.
  D. Create the Player in the current thread and listen for events in a separate thread.
  B. Create the Player in a separate thread from the user interface, then create a PlayerListener that receives events from this Player.

• Question 134:

  Given that rs is an object of type javax.microedition.rms.RecordStore and that record 1 exists in rs, and

  21.

  String one = "short String";

  22.

  String two = "a much longer String";

  23.

  byte [] small = one.getBytes();

  24.

  byte [] big = two.getBytes();

  25.

  rs.setRecord(1, big, 0, big.length);

  26.

  rs.setRecord(1, small, 0, small.length); What is the result?

  A. An exception is thrown at runtime.
  B. Record 1 contains "short String."
  C. Record 1 contains "a much longer String."
  D. Record 1 contains "short Stringr String."
  E. Compilation fails.
  B. Record 1 contains "short String."

• Question 135:

  Which is true when using multiple threads to access a record store?

  A. You must coordinate access to a record store to prevent data corruption.
  B. The implementation coordinates access, ensuring that record stores will NOT be corrupted.
  C. You CANNOT access a record store with multiple threads.
  D. You must lock a record store prior to access.
  A. You must coordinate access to a record store to prevent data corruption.

• Question 136:

  Given the MIDlet code:

  10. //...

  20.

  try {

  21.

  Connection conn = Connector.open("http://www.sun.com");

  22.

  InputStream is = conn.getInputStream();

  23.

  //...

  30.

  } catch (IOException e) {

  31.

  //...

  40. }

  Which is true?

  A. Compilation fails.
  B. The system returns a null InputStream.
  C. The system returns a valid InputStream for reading.
  D. An exception is thrown at runtime.
  A. Compilation fails.

• Question 137:

  What is the result if a call to serviceRepaints() triggers a separate thread to invoke paint()?

  A. A deadlock always occurs.
  B. The system may deadlock if the caller to serviceRepaints() holds a lock that is also needed by paint().
  C. An exception is thrown at runtime.
  D. MIDP is thread-safe. There will never be a deadlock.
  B. The system may deadlock if the caller to serviceRepaints() holds a lock that is also needed by paint().

• Question 138:

  What does the application level security ensure?

  A. controlled access to system resources
  B. no access to system resources
  C. restricted access to native application libraries
  D. unlimited access to native application libraries
  A. controlled access to system resources

• Question 139:

  Which exception is generated if a user rejects permission to any restricted resource?

  A. ConnectionNotFoundException
  B. IllegalAccessException
  C. SecurityException
  D. CertificateException
  C. SecurityException

• Question 140:

  Which two are true regarding the interaction of the Application Management Software (AMS) and a MIDlet when a connection notification is pushed to a device? (Choose two.)

  A. If the notification is for a datagram, the AMS must guarantee that the datagram is made available to the MIDlet after the MIDlet is invoked. However, additional datagrams could be lost during the time required to start the MIDlet.
  B. If the AMS starts a MIDlet in response to an inbound connection, the MIDlet must defer the responsibility of closing the connection to the AMS to prevent an IOException from occurring.
  C. There are no guarantees provided by the AMS as to the state of a datagram or socket connection. The connection notification is intended to start the MIDlet to handle subsequent connections.
  D. If the notification is for a socket, the connection must be provided to the MIDlet. However the server side of the connection may timeout before the MIDlet actually starts.
  A. If the notification is for a datagram, the AMS must guarantee that the datagram is made available to the MIDlet after the MIDlet is invoked. However, additional datagrams could be lost during the time required to start the MIDlet.
  D. If the notification is for a socket, the connection must be provided to the MIDlet. However the server side of the connection may timeout before the MIDlet actually starts.