Online Access Free 1Z0-869 Practice Test

An open record store, rs, contains five records with record IDs 1, 2, 3, 4, and 5.
1 . byte[] data = new byte[10];
2 .
3 . for (int i = 1; i <= rs.getNumRecords(); i++)
4 . {
5 . if (rs.getRecordSize(i) > data.length)
6 . data = new byte[rs.getRecordSize(i)];
7 . rs.getRecord(i, data, 0);
8 . System.out.println(new String(data));
9 . }
If record ID 3 is deleted, and the code is run, what is the result?

• A.This code generates an InvalidRecordIDException.
• B.This code runs without any errors.
• C.This code generates a NullPointerException.
• D.This code generates a RuntimeException.
• E.This code generates a RecordIDException.

Which is false about untrusted MIDlet suites?

• A.JTWI devices must treat all MIDP 2.0 suites as trusted.
• B.An untrusted MIDlet suite does not request permissions explicitly in the JAR manifest or the application descriptor.
• C.Untrusted MIDlet suites may access protected APIs or functions if given explicit user permission.
• D.JTWI devices must treat all MIDP 1.0 suites as untrusted.

Given the MIDlet code:
11. DatagramConnection dgc
(DatagramConnection)Connector.open("datagram://:444");
1 2. Datagram datagram = dgc.newDatagram(20);
1 3. dgc.receive(datagram);
1 4. byte[] data = datagram.getData();
1 5. String s = new String(data);
1 6. list.append(s, null);
1 7. System.out.println("Datagram received: " + s);
Which two are true regarding the portability of the code between devices? (Choose two.)

• A.The code is portable because all the classes and interfaces used are defined in the CLDC.
• B.Installation will fail on devices that do not support datagrams.
• C.Datagrams may not be supported on all platforms.
• D.Port 444 may be restricted or ignored by some MIDP implementations.

Given the MIDlet code:
3 . public void go() {
4 . try {
5 . doStuff();
6 . } catch(java.lang.IllegalAccessError e) {
7 . aForm.append("An Error");
8 . }
9 . }
Assuming the aForm variable on line 7 is a correctly initialized Form and set to the current display, what is the result?

• A.The MIDlet fails at runtime due to a problem on line 7.
• B.Compilation fails due to a problem on line 7.
• C.An Error is printed to the display if an IllegalAccessError occurs.
• D.The MIDlet fails at runtime due to a problem on line 6.
• E.Compilation fails due to a problem on line 6.

Which JAD attribute must be present to begin the MIDlet suite authentication process using
X.509 PKI?

• A.MIDlet-Permission
• B.MIDlet-Jar-RSA-SHA1
• C.MIDlet-Permission-Opt
• D.MIDlet-Certificate-n-m