What does the following function return? Class retVal = [self class]; if ([retVal class] != [NSObject class]) { while ([retVal superclass] != [NSObject class]) retVal = [retVal superclass]; } return retVal;

Thread joining synchronizes threads by doing which of the following?

Which of the following can be called to remove zombie processes?

When there are more fork() calls than wait() calls, which of the following is created?

The following code is written to be accessed by multiple detached threads. : const char * c; char * d; : /* no lock and no mutex is used in any way here */ my_print_func (c, &d); : Which one of the following will happen when this code is re-entered by multiple threads?

Which of the following is an advantage of using pipes over shared memory for interprocess communication?

What does the open system call return upon success?

Which sequence creates a socket based connection for communication?

A C program 'domath.c' utilizes the math library. Which command correctly creates the corresponding executable 'domath'?

Effect of setting the 'sticky' bit on an application's executable image?

How many bytes of a file of size 1023 will be read by the following piece of code?