Programming Question Pool

1. Which function maintains a struct that allows a programmer to obtain a socket's portnumber?
   • gethostbyname
   • getservebyname
   • getsockname
   • getportbyname
2. In BSD socket programming, which one has the correct order of API calls for server before server blocks?
   • socket()->bind()->accept()->listen()
   • socket()->listen()->bind()->accept()
   • socket()->bind()->listen()->accept()
   • socket()->accept()->bind()->listen()
3. BSD sockets are best described as:
   • places for light bulbs.
   • integers.
   • network data structures.
   • an ISO communications protocol.
4. The Unix connect system call (using TCP as the transport) returns:
   • after the Syn is sent.
   • after the Syn/Ack is sent.
   • after the Ack is sent.
   • after the Ack is received.
5. A BSD socket is an interface between:
   • Layers 1 and 2
   • Layers 2 and 3
   • Layers 3 and 4
   • Layers 4 and 5
   • Layers 5 and 6
6. The Unix system call gethostbyname() is associated most closely with which protocol:
   • ASN.1
   • DNS
   • IP
   • TCP
7. The routine used to get a UDP packet from a socket is ____________.