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2021 Dec 1Z0-869 question

Q71. - (Topic 3) 

Which is false about untrusted MIDlet suites? 

A. Untrusted MIDlet suites may access protected APIs or functions if given explicit user permission. 

B. JTWI devices must treat all MIDP 1.0 suites as untrusted. 

C. JTWI devices must treat all MIDP 2.0 suites as trusted. 

D. An untrusted MIDlet suite does not request permissions explicitly in the JAR manifest or the application descriptor. 


Q72. - (Topic 3) 

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. 

Answer: B,C,E 

Q73. - (Topic 1) 



 Image image = Image.createImage(20, 20); 


 Graphics g = image.getGraphics(); 


 g.setColor(0xFF0000); //RED 


 g.fillRect(0, 0, 


 20, 20); 


 Alert alert= new Alert("WARNING!"); 




 g.setColor(0x000000); //BLACK 


 g.fillRect(0, 0, 


 20, 20); 

What is the result when the Alert is shown? 

A. A runtime exception is thrown. 

B. A red square is shown on the Alert. 

C. Either a red square or a black square is shown depending on the implementation. 

D. A black square is shown on the Alert. 


Q74. - (Topic 3) 



 public boolean X(byte[] Y) throws IllegalArgumentException { 


 ByteArrayInputStream bais = new ByteArrayInputStream(arg); 


 DataInputStream dis = new DataInputStream(bais); 


 String type = null; 34. try {type = dis.readUTF();} 


 catch (Exception e) { } 





Which substitutions for X, Y, and Z in the code create a valid implementation of RecordFilter that matches records whose type is NOT deleted? 

A. X is matches Y is type Z is !type.equals("deleted") 

B. X is match Y is arg Z is type.equals("deleted") 

C. X is matches Y is arg Z is !type.equals("deleted") 

D. X is match Y is type Z is !type.equals("deleted") 

E. X is matches Y is arg Z is type.equals("deleted") 


Q75. - (Topic 3) 

Given: 10. //... 


 int[] foo = new int[10000]; 


 foo = null; 





Which is true once the program execution reaches line 23? 

A. The garbage collector CANNOT reclaim the memory allocated to foo because the reference is nulled out. 

B. The garbage collector is triggered but there are no guarantees that any memory has been reclaimed. 

C. The garbage collector suspends the program until more memory becomes available. 

D. The garbage collector is triggered and memory is guaranteed to be reclaimed. 


Replace 1Z0-869 simulations:

Q76. - (Topic 3) 

What is true when an enumeration applies both a RecordFilter class and RecordComparator class on a record store? 

A. An enumeration CANNOT apply both a RecordFilter and RecordComparator. 

B. The records that match the search criteria in RecordFilter will be returned using the ordering defined by RecordComparator. 

C. All records will always be available as part of the enumeration result set. 

D. The return order of the result set is undefined. 

E. The records that match the search criteria in RecordComparator will be returned using the ordering defined by RecordFilter. 


Q77. - (Topic 2) 

A MIDP 2.0 compliant device creates an HTTP connection to a server that supports HTTP 

1.1. Which is true? 

A. The device definitely supports HTTP 1.1. 

B. The device definitely does NOT support HTTP 1.1. 

C. The device may or may NOT support HTTP 1.1. 

D. There is no such thing as a 1.1 version of HTTP. 


Q78. - (Topic 3) 

Which is true regarding the use of Thread objects in a CLDC 1.1 compliant virtual machine? 

A. A Thread lives until it exits from the run() method it invoked at startup. 

B. There is no way for one Thread to force another Thread to stop. 

C. A Thread can be stopped only from the inside of a MIDlet class. 

D. To stop a Thread, a developer can use the stop() method. 


Q79. - (Topic 3) 

Which two are true regarding record stores? (Choose two.) 

A. All records within a record store have the same length. 

B. Record store names are case insensitive. 

C. Record stores can be locked. 

D. The first created in a record store has a record ID of 1. 

E. When a MIDlet suite is removed, record store contents remain on the device. 

F. MIDlets within the same suite can access the record stores of other MIDlets in the same suite. 

G. MIDlets within the same suite CANNOT access the record stores of other MIDlets in the same suite. 

Answer: D,F 

Q80. - (Topic 2) 



 class TestRecordListener implements RecordListener { 


 public void recordAdded(RecordStore rcs, int recordId) { 


 // ... 




 public void recordDeleted(RecordStore rcs, int recordId) { 


 // ... 




 public void recordChanged(RecordStore rcs, int recordId) { 


 // ... 





If rs is a valid and open record store, how can you properly associate a record listener with rs? 

A. rs.addRecordListener(new TestRecordListener()) 

B. rs.newRecordListener(new TestRecordListener()) 

C. rs.setRecordListener(new TestRecordListener()) 

D. rs.createRecordListener(new TestRecordListener())