Which types are not allowed within an enum variant's body?

Your application requires a single copy of some data type T to be held in memory that can be accessed by multiple threads. What is the thread-safe wrapper type?

Which choice is not valid loop syntax?

Which statement about enums is false?

What does an underscore (_) indicate when used as pattern?

What is a safe operation on a std::cell:UnsafeCell?

Which of the following is correct for the standard file descriptors that are automatically opened in UNIX?

Which of the following could the fork() command return to the child process?

Which of the following techniques can help keep system programs secure?

The result of calling kill(6003, 0) is which of the following?

CORBA's DII allows a client to do which one of the following?