What function(s) does the Trusted Computing Base (TCB) in Symbian OS perform?

Which Avkon controls provided in the S60 platform are window-owning controls?

What is the output of the following code?
#include
#include # or
LIBRARY centralrepository.lib
CRepository* cRepository = CRepository::NewLC( KCRUidDCLLogs );
TBuf<50> bytes;
User::LeaveIfError( cRepository->Get(KLogsGPRSReceivedCounter, bytes ) );
CAknInformationNote* informationNote = new (ELeave) CAknInformationNote;
TBuf<100> msg;
msg.Copy(_L('Data in bytes : '));
msg.Append(bytes);
informationNote->ExecuteLD(msg);
CleanupStack::PopAndDestroy();

Which layer is responsible for managing all plug-ins, Central Repository, DBMS and cryptographic services in Symbian?

What is the maximum size of values that can be assigned to data type TInt in Symbian C++?

Setting multiple networking profiles is not possible on the S60 platform.

Which statement will you use in an S60 resource file to declare the version number of the resource file?

Which mechanisms provided by the Symbian OS allows file access control?

Which classes do(es) NOT own any external object, whether directly (by pointer) or indirectly (by handle)?

Which server is responsible for starting and stopping the communication servers providing dedicated services?

Suppose you have 2 classes namely, Person and Footballer, as follows: class Person { virtual void func(void) { ; } }; class Athlete : public Person { /* . . . */ }; and suppose 2 pointers are defined as follows: Person *Joy = new Person; Person *Max = new Athlete; What will be the value of the variable 'a', if the following dynamic_cast statement is executed? a = dynamic_cast(Joy);