Computer Science 853
                               Quiz 3        Name _________________

 1. Suppose I create a socket using:
                 s = socket(PF_INET, SOCK_COP, IPPROTO_COP);

    Describe how your struct proto will be located and linked to your struct
    sock.  Include a diagram showing all relevant data structures and the
    linkages between them























 2. Suppose I call bind using:
               err = bind(s, &name, sizeof(name));
    To determine whether or not you provided a bind function it will
    be necessary for the kernel to find your struct proto

    Include a diagram showing ALL RELEVANT data structures and the
    linkages between them showing how the value "s" is sufficient to
    find your struct proto.


























 3. The routing mechanism is invoked

    a. during bind                           b. during connect

    c. during both                           d. during neither


 4. In UDP the hash queue on which a struct sock resides is derived
    from

    a. local IP addr                        b. remote IP addr

    c. local port number                    d. remote port number


 5. What is the name of the structure that contains a POINTER TO
    the table by which read() and write() functions on sockets are
    vectored to the appropriate handler.





 6. During a UDP connect operation

   a. If the socket is not already    b. Any existing bind status is
      bound inet_autobind() is           reset to null
      called to bind it.

   c. The bind status is not
      altered.


 7. During a UDP bind operation

   a. If the socket is not already    b. Any existing connection is
      connected inet_autoconn() is       reset to null.
      called to connect it.

   c. The connection status is not
      altered.


 8. For a UDP struct sock  what is the difference in the use of saddr
    and rcv_saddr elements?

    a. saddr


    b. rcv_saddr



 9. If you fail to provide a disconnect function in your protocol, how
    can a hacker cause your system to crash?