1Z0-869 Online Practice Questions and Answers

Click the Task button.

Place the connection interfaces in their appropriate places in the hierarchy.

Select and Place:

A MIDlet suite is signed using X.509 PKI. Which encoding format must be used for the certificate entries in the JAD file?

A. binary

B. none

C. base64

D. yEnc

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.

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

Which is true about the installation status report definition?

A. A MIDlet suite CANNOT be removed until the installation notification has been successfully sent and the acknowledgement has been received.

B. In response to an installation status report, the server must reply with a 200 OK. HTTP acknowledgement response.

C. If the installation status report CANNOT be sent, the device must refuse the installation of the MIDlet suite.

D. The only protocols supported for the status report notification are HTTP and UDP.

Which is true regarding CLDC?

A. A CLDC implementation can provide features that are optional.

B. A CLDC implementation CANNOT provide features that are optional.

C. A CLDC implementation must provide at least one optional feature.

D. A CLDC implementation generally defines a superset of J2SE technology.

A MIDlet suite has the application descriptor fragment:

MIDlet-1: E-mail, email.png, com.example.EmailMIDlet

The MIDlet suite has the necessary permissions to use the PushRegistry.

What line does the application descriptor need to register the MIDlet suite for socket push connections on port 79?

A. MIDlet-Push-1: socket://:79, MIDlet-1, *

B. MIDlet-Push-1: socket://:79, E-mail, *

C. MIDlet-Push-1: socket://:79, com.example.EmailMIDlet, *

D. MIDlet-Push-1: socket://:79, EmailMIDlet, *

What is the result when a user tries to update a signed, installed MIDlet suite with an unsigned MIDlet suite with the same MIDlet-Name?

A. The unsigned MIDlet suite is installed if it has a newer MIDlet-Version.

B. The device blocks all access to any MIDlets.

C. The signed MIDlet suite is left installed, even if the unsigned MIDlet suite has a newer MIDlet-Version.

D. The MIDlet suite with the newer MIDlet-Version is installed.

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

A. A JTWI-compliant device must support HTTP 1.1 and cookies.

B. A JTWI-compliant device must support HTTP authentication.

C. A JTWI-compliant device must support HTTP 1.0.

D. A JTWI-compliant device must support HTTP 1.1.

Which three statements are true regarding the handling of wireless connections? (Choose three.)

A. Network connections should never be performed on a separate thread, so problems can be handled quickly.

B. Performing network operations on the same thread used by the display is likely to block refreshes of the display until the network operations complete.

C. The connection could unexpectedly terminate while processing the input or output streams.

D. Devices can only support one HttpConnection at a time; therefore, network access from multiple threads must be serialized.

E. A network connection could interfere with other services on the device, such as the ability to receive phone calls or SMS on a phone.