1. True or False: When a connected socket is closed, the close() system call on the socket normally does not return until all data is sent from the socket's send buffer.

2. True or False: If the first argument of the select() call is 0, then the call can not block.

3. True or False: SO_REUSEADDR can allow a single process to bind the same port to multiple sockets, as long as each bind specifies a different local IP address.

4. True or False: If a socket send buffer has 100 bytes of space available, then select() would always indicate that the socket is writeable.