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Question:You are writing a method that returns an ArrayList named al. You need to ensure that changes to the ArrayList are performed in a thread-safe manner. Which code segment should you use?

A ArrayList al = gcnew ArrayList();
 lock (al->SyncRoot.GetType()) 
 { 
 return al;
 } 
 "A Composite Solution With Just One Click" - Certification Guaranteed 280 Microsoft 70-536 Exam 
B ArrayList= al = gcnew ArrayList();
 lock (al->SyncRoot) 
 { 
 return al; 
  } 
C ArrayList= al = gcnew ArrayList();
 ArrayList= sync_al = ArrayList::Synchronized(al); 
 return sync_al; 
D ArrayList= al = gcnew ArrayList(); 
 Monitor::Enter(al); 
 Monitor::Exit(al); 
 return al;

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Question:You are writing a method that returns an ArrayList named al. You need to ensure that changes to the ArrayList are performed in a thread-safe manner. Which code segment should you use?

A ArrayList al = gcnew ArrayList(); lock (al->SyncRoot.GetType()) { return al; } "A Composite Solution With Just One Click" - Certification Guaranteed 280 Microsoft 70-536 Exam

B ArrayList= al = gcnew ArrayList(); lock (al->SyncRoot) { return al; }

C ArrayList= al = gcnew ArrayList(); ArrayList= sync_al = ArrayList::Synchronized(al); return sync_al;

D ArrayList= al = gcnew ArrayList(); Monitor::Enter(al); Monitor::Exit(al); return al;

C

A ArrayList al = gcnew ArrayList();
lock (al->SyncRoot.GetType())
{
return al;
}
"A Composite Solution With Just One Click" - Certification Guaranteed 280 Microsoft 70-536 Exam

B ArrayList= al = gcnew ArrayList();
lock (al->SyncRoot)
{
return al;
}

C ArrayList= al = gcnew ArrayList();
ArrayList= sync_al = ArrayList::Synchronized(al);
return sync_al;

D ArrayList= al = gcnew ArrayList();
Monitor::Enter(al);
Monitor::Exit(al);
return al;